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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 50001. |
(A): Ionic compounds tend to be non-volatile (R) : Inter ionic forces in ionic compounds are weak 2 |
| Answer» <html><body><p>Both (A) and (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) arc true and (R) is the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> explanation of (A) <br/>Both (A) and (R) are true and (R) is not the correct explanation of (A) <br/> (A) is true but (R) is <a href="https://interviewquestions.tuteehub.com/tag/false-459184" style="font-weight:bold;" target="_blank" title="Click to know more about FALSE">FALSE</a> <br/>(A) is false but (R) is true </p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50002. |
(A): Ionic compounds exhibit isomerism (R) : Ionic bond is non directional bond |
| Answer» <html><body><p>Both (A) and (R) <a href="https://interviewquestions.tuteehub.com/tag/arc-381236" style="font-weight:bold;" target="_blank" title="Click to know more about ARC">ARC</a> true and (R) is the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> explanation of (A) <br/>Both (A) and (R) are true and (R) is not the correct explanation of (A) <br/> (A) is true but (R) is <a href="https://interviewquestions.tuteehub.com/tag/false-459184" style="font-weight:bold;" target="_blank" title="Click to know more about FALSE">FALSE</a> <br/>(A) is false but (R) is true </p>Answer :D</body></html> | |
| 50003. |
(A): Instead of using conventional fuels and energy systems, non-conventional fuels and non- conventional energy systems must be put into practice. (R): Non-conventional fuels and non-conventional energy systems will cause more pollution. |
| Answer» <html><body><p>Both (A) and (R) are <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> and (R) is the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> explanation'of (A)<br/>Both (A) and (R) are true and (R) is not the correct explanation of (A)<br/> (A) is true but (R) is false <br/>(A) is false but (R) is true </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> : (A) is true but (R) is false</body></html> | |
| 50004. |
(A) : Instead of pesticides, herbicides like NaClO_3, Na_3AsO_3 are used in agriculture sector. (R) : The fields sprayed with herbicides are more easily attacked by insects and plant diseases |
| Answer» <html><body><p>Both (A) and (R) are true and (R) is the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> of (A)<br/>Both (A) and (R) are true and (R) is not the correct explanation of (A)<br/> (A) is true but (R) is false<br/>Both (A) and (R) are false</p>Answer :B</body></html> | |
| 50005. |
(A): Inductive effecti is possible in chlorobutane but absent in Butane (R ): Inductive effect is possible in the organic compounds having at least one polar covalent bond |
| Answer» <html><body><p>A and R are <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a>, R <a href="https://interviewquestions.tuteehub.com/tag/explains-2627999" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLAINS">EXPLAINS</a> A<br/>A and R are true, R does not <a href="https://interviewquestions.tuteehub.com/tag/explain-447165" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLAIN">EXPLAIN</a> A<br/>A is true, but R is false<br/>A is false, but R is true</p>Answer :A</body></html> | |
| 50006. |
(A) in Victor Meyer's method, vapour density is considered to be one-half of molecular weight. |
| Answer» <html><body><p>If both <a href="https://interviewquestions.tuteehub.com/tag/assertion-384238" style="font-weight:bold;" target="_blank" title="Click to know more about ASSERTION">ASSERTION</a> and reason are <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> and reason is the correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> of the assertion <br/>If both assertion and reason are correct but reason is not the correct explanation of the assertion <br/>If assertion is correct but reason is incorrect <br/>If assertion is incorrect but reason is correct </p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50007. |
a. In the sixth period, after filling of 6p orbitals, the next electron (i.e. 57th) enters the 5d-orbital against aufbau principal and there after the filling of seven 4f-orbitals starts with cerium (Z = 71). Explain this anomalous behaviour. b. In the seventh period, after the filling of 7s-orbital, the next two electrons (i.e. 89th and 90th) enter the 6d-orbital against Aufbau principle and there after the filling of seven 5f-orbitals begins with proactinium (Pr, Z = 91) and ends up with lawrencium (Lr, Z = 103). Explain this anomalous behaviour. |
| Answer» <html><body><p></p>Solution :This can be explained on the basis of <a href="https://interviewquestions.tuteehub.com/tag/greater-476627" style="font-weight:bold;" target="_blank" title="Click to know more about GREATER">GREATER</a> stability of the xenon (inert gas) core. After barium `(Ba, Z = 56)`, the addition of the next electron (i.e. `57th)`, should occur in `4f`-orbitals lie inside the core, and will tend to destatabilise the xenon core. <br/>`Z = 54, rArr [kr]4d^(10)4f^(<a href="https://interviewquestions.tuteehub.com/tag/0-251616" style="font-weight:bold;" target="_blank" title="Click to know more about 0">0</a>)5s^(2)5p^(6)5d^(0)` <br/> Therefore, the `57th` electron prefers to enter `5d`-orbitals which lies outside the xenon core and whose energy is only sightly greater than that of `4f`-orbitals. <br/> Thus, stability of the atom due to xenon core compensates more than the <a href="https://interviewquestions.tuteehub.com/tag/slight-2273584" style="font-weight:bold;" target="_blank" title="Click to know more about SLIGHT">SLIGHT</a> instability caused by the addition of one electron to the higher energy `5d`-orbital instead of the lower energy `4f`-orbital. <br/> Thus, the outer electronic configuration of La `(Z = 57)` is `5d^(1)6s^(2)` rather than the expected `4f'6s^(2)`. Once `5d`-orbital has one electron, the next electron (i.e. `58th)` instead of entering the outer `5d`-orbital, enters the inner `4f`-orbnital. This is due to greater nuclear charge and thereafter the continuous filling of the `4f`-sub shell occurs till it is complete at lutetium `(Lu, Z = 71, 4f^(<a href="https://interviewquestions.tuteehub.com/tag/14-272882" style="font-weight:bold;" target="_blank" title="Click to know more about 14">14</a>)5d^(1)6s^(2))` <br/> b. The anomalous behaviour is due to: <br/> i. The <a href="https://interviewquestions.tuteehub.com/tag/smaller-1213327" style="font-weight:bold;" target="_blank" title="Click to know more about SMALLER">SMALLER</a> energy difference between `5f`- and `6d`-orbitals than between `4f`- and `5d`-orbitals. <br/> ii. Due to the greater stability of radon `(Rn, Z = 86)`, the next two electrons (i.e. `89th` and `90th)` after filling the `7s`-orbital prefer to enter `6d`-orbitals before filling of `5f`-orbitals begin with proactinium `(Pa, Z = 91)` and continues till it is complete with lawrencium `(Lr, Z = 103)`.</body></html> | |
| 50008. |
A in purte state is a white solid of sodium which acts as an oxidizing agent. A+CO_(2)toB+C A+H_(2)SO_(4)overset(hot)rarrC+D+H_(2)O Based on above reaction sequance select incorrect statement: |
| Answer» <html><body><p>The bond order of anionc species in A is 0.5 <br/>Aq <a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> of B gives pink colour with <a href="https://interviewquestions.tuteehub.com/tag/phenolphthalein-599562" style="font-weight:bold;" target="_blank" title="Click to know more about PHENOLPHTHALEIN">PHENOLPHTHALEIN</a> indicator <br/>Aq solution of A <a href="https://interviewquestions.tuteehub.com/tag/turns-1429088" style="font-weight:bold;" target="_blank" title="Click to know more about TURNS">TURNS</a> red litmus paper <a href="https://interviewquestions.tuteehub.com/tag/white-742716" style="font-weight:bold;" target="_blank" title="Click to know more about WHITE">WHITE</a> at low <a href="https://interviewquestions.tuteehub.com/tag/temperatures-1241229" style="font-weight:bold;" target="_blank" title="Click to know more about TEMPERATURES">TEMPERATURES</a> <br/>Aq solution of D When added to `BaCl_(2)` a white pracipitates is obtained.</p>Answer :A</body></html> | |
| 50009. |
(A): In Haber's process, N_(2) and H_(2) combine in 1: 3 volume ratio (R): Gases combine in simple volume ratio |
| Answer» <html><body><p>Both A and <a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a> are true and R is the<br/>Both A and R are true but R is not the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> explanation of A<br/>A is true but R is <a href="https://interviewquestions.tuteehub.com/tag/false-459184" style="font-weight:bold;" target="_blank" title="Click to know more about FALSE">FALSE</a><br/>A is false but R is true </p>Answer :A</body></html> | |
| 50010. |
(A) : In an atom the velocity of electron as it moves into higher orbits keeps on decreasing (R) : Velocity of electron is inversely proportional to the radius of orbit |
| Answer» <html><body><p>Both (A) and (R) are <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> and (R) is the correct explanation of (A) <br/>Both (A) and (R) are true and (R) is not the correct explanation of (A)<br/>(A) is true but (R) is false<br/>(A) is false but (R) is true </p>Solution :As e moves to <a href="https://interviewquestions.tuteehub.com/tag/higher-1022060" style="font-weight:bold;" target="_blank" title="Click to know more about HIGHER">HIGHER</a> orbits its velocity <a href="https://interviewquestions.tuteehub.com/tag/decreases-946143" style="font-weight:bold;" target="_blank" title="Click to know more about DECREASES">DECREASES</a></body></html> | |
| 50011. |
(a) In a polar solvenbt , PCl_(5) undergoes an ionization reaction as follows :2 PCl_(5)hArrPCl_(4)^(+) + PCl_(6) ^(-) Wht will be the geometrical shape of each species present In the equalilbrium maxture ? (b) Why doesPCl_(5) exist as[ PCl_(4)]^(+) [PCl_(6)]^(-) ? |
| Answer» <html><body><p></p>Solution :`X = (1)/(2) [{{:(" NO of valence electrons "),("of the central atom "):}}+{{:(" NO of monovalent atoms/group "),("surrounding the central atom "):}}]` <br/> `- {{:("Charge on the cation if the given "),(" <a href="https://interviewquestions.tuteehub.com/tag/species-650011" style="font-weight:bold;" target="_blank" title="Click to know more about SPECIES">SPECIES</a> is a polyatomic cation "):}}+{{:(" Charge on the anion if the given "),(" species is a polyatomic anion"):}}` <br/>For `PCl_(5), X = (1)/(2) [5 + 5] - 0 + 0 = 5(sp^(3) d ,`bipyramidal) <br/> For`PCl_(4_^(+) , X = (1)/(2) [ 5 + 4 - 1 + 0 ] = 4 (sp^(3), `tetrahedra) <br/> For ` PCl_(6) ^(-), X = (1)/(2) [ 5 + 6 - 0 + 1] = 6 (sp^(3) d^(2)` , octahedral)<br/> (<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>) ` PCl_(5)` has <a href="https://interviewquestions.tuteehub.com/tag/different-951434" style="font-weight:bold;" target="_blank" title="Click to know more about DIFFERENT">DIFFERENT</a> axial and equatorial bohnd lengths and <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a> , has an unsymmetrical structure<br/> Which is not stable . By dissociation, it changes into tetrahedral ` ([PCl_(4)]^(+)` and octahedral`[PCl_(6)]^(-)` Which are stable .</body></html> | |
| 50012. |
(A) : In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now on removing the lid of pressure cooker, the water starts boiling again (R) : The impurities in water bring down its boiling point. |
| Answer» <html><body><p>If both (A) and (R) are correct and (R) is the correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> for (A)<br/>If both (A) and (R) are correct but (R) is not correct explanation for (A)<br/>If (A) is correct but (R) is incorrect<br/>If (A) is incorrect but (R) is correct</p>Solution :In pressure cooker, water boils above `100^(@)C`. When the lid of cooker is <a href="https://interviewquestions.tuteehub.com/tag/opened-2895201" style="font-weight:bold;" target="_blank" title="Click to know more about OPENED">OPENED</a>, pressure is lowered so that boiling point <a href="https://interviewquestions.tuteehub.com/tag/decreases-946143" style="font-weight:bold;" target="_blank" title="Click to know more about DECREASES">DECREASES</a> and water boils again.</body></html> | |
| 50013. |
(A) In a gaseous reaction, K_(c) is unitless when Deltan = 0. (R) Unit of K_(c) = (mol L^(-1))^(Deltan). |
| Answer» <html><body><p>Both (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) and (A) are true and reason is the <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> explanation of assertion.<br/>Both (R) and (A) are true but reason is not correct explanation of assertion<br/>Assertion (A) is true but reason (R) is false<br/>Assertion (A) and reason (R) both are false</p>Answer :A</body></html> | |
| 50014. |
(A) If sulphur and nitrogen are also present in orgaic compound along with halogen then AgNO_(3) solution is added in acidified sodium fusion extract. (R) On acidification, NaCN and Na_(2)S decompose. NaCN + HNO_(3) rarr NaNO_(3)+HCNuarr Na_(2)S +2HNO_(3) rarr 2NaNO_(3)+H_(2)Suarr |
| Answer» <html><body><p>If both assertion and <a href="https://interviewquestions.tuteehub.com/tag/reason-620214" style="font-weight:bold;" target="_blank" title="Click to know more about REASON">REASON</a> are correct and reason is the correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> of the assertion <br/>If both assertion and reason are correct but reason is not the correct explanation of the assertion <br/>If assertion is correct but reason is <a href="https://interviewquestions.tuteehub.com/tag/incorrect-499101" style="font-weight:bold;" target="_blank" title="Click to know more about INCORRECT">INCORRECT</a> <br/>If assertion is incorrect but reason is correct </p>Answer :A</body></html> | |
| 50015. |
(a). If both (A) and (R) are correct and (R) is the correct explanation for (A). (b). If both (A) and (R) are correct and (R) is the correct explanation for (A). (c). If (A) is correct and (R) is incorrect. (d). If (A) is incorrect and (R) is correct. ltbr. (e). If both (A) and (R) are incorrect. Q. Assertion (A): In organic layer test, Cl_2 water is added to the sodium extract, which oxidises Br^(c-) and I^(c-) ions to Br_2 andI_2, respectively. Reason (R): Reduction potential of Cl_2 is greater than that of Br_2 and I_2. |
| Answer» <html><body><p><br/></p>Solution :Both (A) and (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) are <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> and (R) is the correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> for (A) <br/> `Cl_2+Br^(c-)rarr2Cl^(c-)+Br_2` <br/> `Cl_2+I^(c-)rarr2Cl^(c-)+I_2` <br/> Reduction <a href="https://interviewquestions.tuteehub.com/tag/potential-1161228" style="font-weight:bold;" target="_blank" title="Click to know more about POTENTIAL">POTENTIAL</a> `E^@(Cl_2)/(<a href="https://interviewquestions.tuteehub.com/tag/cl-408888" style="font-weight:bold;" target="_blank" title="Click to know more about CL">CL</a>^(c-))gtE^@(Br_2)/(Br^(c-))` or `(E^@I_2)/(I^(c-))`.</body></html> | |
| 50016. |
(a). If both (A) and (R) are correct and (R) is the correct explanation for (A). (b). If both (A) and (R) are correct and (R) is the correct explanation for (A). (c). If (A) is correct and (R) is incorrect. (d). If (A) is incorrect and (R) is correct. ltbr. (e). If both (A) and (R) are incorrect. Q. Assertion (A): Dumas method is more applicable to nitrogen containing organic compounds than Kjeldahl's method. Reason (R): Kjeldahl's method does not give stisfactory results for compounds in which N is linked to O atom. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Both (A) and (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) are <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a>, but (R) is not the correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> for (A).</body></html> | |
| 50017. |
(a). If both (A) and (R) are correct and (R) is the correct explanation for (A). (b). If both (A) and (R) are correct and (R) is the correct explanation for (A). (c). If (A) is correct and (R) is incorrect. (d). If (A) is incorrect and (R) is correct. ltbr. (e). If both (A) and (R) are incorrect. Q. Assertion (A): Essential oils are volatile and are isoluble in H_2O Reason (R): Essential oils are purified by steam ditillation. |
| Answer» <html><body><p><br/></p>Solution :Both statements are <a href="https://interviewquestions.tuteehub.com/tag/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> and (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) is the correct explanation for (A) <a href="https://interviewquestions.tuteehub.com/tag/steam-1226863" style="font-weight:bold;" target="_blank" title="Click to know more about STEAM">STEAM</a> distillation is <a href="https://interviewquestions.tuteehub.com/tag/used-2318798" style="font-weight:bold;" target="_blank" title="Click to know more about USED">USED</a> to separate <a href="https://interviewquestions.tuteehub.com/tag/volatilebrbr-3264686" style="font-weight:bold;" target="_blank" title="Click to know more about VOLATILE">VOLATILE</a> compounds which are insoluble in `H_2O`.</body></html> | |
| 50018. |
A ideal gas does work on its surroundings when it expands by 2.5 L against external pressure 2 atm. This work done is used to heat up 1 mole of water at 293 K. What would be the final temperature of water in kelvin if specific heat for water is "4.184 Jg"^(-1)"K"^(-1)? |
| Answer» <html><body><p>300<br/>600<br/>200<br/>1000</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/work-20377" style="font-weight:bold;" target="_blank" title="Click to know more about WORK">WORK</a> <a href="https://interviewquestions.tuteehub.com/tag/done-2591742" style="font-weight:bold;" target="_blank" title="Click to know more about DONE">DONE</a>, `w=-P_("ext.")<a href="https://interviewquestions.tuteehub.com/tag/dv-433533" style="font-weight:bold;" target="_blank" title="Click to know more about DV">DV</a>` <br/> `W=-2xx2.5=-"5 L atm"=-"506.3 J"`<br/> Because this work is used in raising the temperature of water, so work done is equalto the <a href="https://interviewquestions.tuteehub.com/tag/heat-21102" style="font-weight:bold;" target="_blank" title="Click to know more about HEAT">HEAT</a> supplied i.e., `w=q=m.c_(s).DeltaT` <br/> Given that, `m= 18g"(= 1 mole)", c_(s)=4.184g^(-1)K^(-1)`, <br/> `q=+506.3J, DeltaT=? `(Heat is given to water) <br/> `DeltaT=(q)/(c_(s).m)=(506.3)/(4.184xx18)=6.72` <br/> `therefore"<a href="https://interviewquestions.tuteehub.com/tag/final-461168" style="font-weight:bold;" target="_blank" title="Click to know more about FINAL">FINAL</a> temperature, "T_(f)=T_(i)+DeltaT=293+6.72` <br/> `=299.72K~~300K`</body></html> | |
| 50019. |
(A) I_(3)^(-) ion is linear. ( R) It is not in sp hybridized state. |
| Answer» <html><body><p>Both (A) and (<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>) are true and (R) is the correct <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a> of (A)<br/>Both (A) and (R) are true and (R) is not the correct explanation of (A) <br/>(A) is true but (R) is <a href="https://interviewquestions.tuteehub.com/tag/false-459184" style="font-weight:bold;" target="_blank" title="Click to know more about FALSE">FALSE</a><br/>(A) is false but (R) is true </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 50020. |
(a) (i) Radius of a cation is smaller then the parent atom. Account for the following. |
| Answer» <html><body><p></p>Solution :A cation os formed by loss of one or more electrons . The <a href="https://interviewquestions.tuteehub.com/tag/nuclear-2474" style="font-weight:bold;" target="_blank" title="Click to know more about NUCLEAR">NUCLEAR</a> charge <a href="https://interviewquestions.tuteehub.com/tag/remains-621920" style="font-weight:bold;" target="_blank" title="Click to know more about REMAINS">REMAINS</a> the same but the number of electrons becomes less than the <a href="https://interviewquestions.tuteehub.com/tag/parent-1146949" style="font-weight:bold;" target="_blank" title="Click to know more about PARENT">PARENT</a> <a href="https://interviewquestions.tuteehub.com/tag/resulting-1187445" style="font-weight:bold;" target="_blank" title="Click to know more about RESULTING">RESULTING</a> in the increase In the effective nuclear charge per electrons. This causes decrease in size .</body></html> | |
| 50021. |
A hypothetical reaction A to 2B, proceed through following sequence of steps A to C , Delta H = q _(1) , C to D, Delta H = q _(2)(1)/(2) D to B , Delta H = q _(3) The heat of reaction is |
| Answer» <html><body><p>`q _(1) + q _(2) + 2q _(3)`<br/>`q _(1) + q _(2) - 2q _(3)`<br/>`q _(1) + q _(2) + 2q _(3)`<br/>`q _(1) + 2q _(2) - 2q _(3)` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50022. |
A hypothetical electromagnetic wave is shown in Figure. Find out the wavelength of the radiation. |
| Answer» <html><body><p></p>Solution :The w avelength is distance <a href="https://interviewquestions.tuteehub.com/tag/betw-3557531" style="font-weight:bold;" target="_blank" title="Click to know more about BETW">BETW</a> <a href="https://interviewquestions.tuteehub.com/tag/een-2603380" style="font-weight:bold;" target="_blank" title="Click to know more about EEN">EEN</a> two successive peaks or two successive troughs of a wave. So, `lambda = <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> 2.16 pm = 8.64 pm`</body></html> | |
| 50023. |
A hydroxy acid on heating gives a 5-membered lactone. The acid is |
| Answer» <html><body><p>`CH_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)OHCH_(2)CH_(2)<a href="https://interviewquestions.tuteehub.com/tag/cooh-409857" style="font-weight:bold;" target="_blank" title="Click to know more about COOH">COOH</a>`<br/>`CH_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)CHOHCH_(2)COOH`<br/>`CH_(3)CH_(2)CHOHCOOH`<br/>`CH_(3)CHOHCHOHCOOH`</p>Answer :A</body></html> | |
| 50024. |
A hydrogen sample is prepared in a particular excited state A. Photons of energy 2.55eV/atom gel absorbed into the sample to take some of the electrons to a further excited state B. As per the number of photons when an electron in the higher excited state returns to the ground state, which of the following are may not be possible? |
| Answer» <html><body><p>15<br/>10<br/>6<br/>3</p>Solution :`<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>.55 = 13.6 xx 1 xx [(1)/(n_A^2 - 1/(n_B^2)]` <br/>`n_A = 2 , n_B = <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>` <br/>`<a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a> ` no. of photons <a href="https://interviewquestions.tuteehub.com/tag/emitted-7679123" style="font-weight:bold;" target="_blank" title="Click to know more about EMITTED">EMITTED</a> `=(4xx3)/(2) = 6`</body></html> | |
| 50025. |
A hydrogen molecule and helium atom are moving with the same velocity. Then the ratio of their de Brogile wavelength is |
| Answer» <html><body><p>`3.313xx10^(-<a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a>)<a href="https://interviewquestions.tuteehub.com/tag/cm-919986" style="font-weight:bold;" target="_blank" title="Click to know more about CM">CM</a>^(-1)`<br/>`5.012xx10^(-20)cm^(-1)`<br/>`8.325xx10^(-20)cm^(-1)`<br/>`5.27xx10^(-<a href="https://interviewquestions.tuteehub.com/tag/21-293276" style="font-weight:bold;" target="_blank" title="Click to know more about 21">21</a>)cm^(-1)`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50026. |
A hydrogen molecule and helium atom are moving with the same velocity. Then the ratio of their de Broglie wavelength is |
| Answer» <html><body><p>`1:1`<br/>`1:27`<br/>`2:1`<br/>`2:3`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50027. |
A hydrogen like atom in ground state absorbs .n. photons having the same energy nad it emits exactly .n. photons when electronic transition takes place. Then the energy of the absorbed photon may be |
| Answer» <html><body><p>91.8 eV<br/>4.8 eV<br/>48.4 eV<br/>54.4 eV</p>Answer :A::<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 50028. |
A hydrogen like atom with atomic number 'Z' is in higher excited state of quantum number 'n'. This excited state can make a transition to the first excited state by successively emitting two photons energies 10 eV and 17 eV respectively. Alternatively, the atom from the same excited state can make a transition to the second excited state by emitting two photons of energies 4.25 eV adn 5.95 eV respectively. Calculate the values of 'n' and 'Z' |
| Answer» <html><body><p></p>Solution :For the given <a href="https://interviewquestions.tuteehub.com/tag/excited-2625787" style="font-weight:bold;" target="_blank" title="Click to know more about EXCITED">EXCITED</a> state, `n_(2) = n` <br/> 1st excited state means, `n_(1) =2` <br/> 2nd excited state means, `n_(1) =3` <br/> <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> difference between n = 2 and n = 3 will be `= (10 + <a href="https://interviewquestions.tuteehub.com/tag/17-278001" style="font-weight:bold;" target="_blank" title="Click to know more about 17">17</a>) - (4.25 + 5.95) = 16.8 eV` <br/> `:. 16.8 = 13.6 ((1)/(2^(2)) - (1)/(3^(2))) Z^(2) = 13.6 xx (5)/(36) xx Z^(2)` <br/> or `Z^(2) = (16.8)/(13.6) xx (36)/(5) = 9 or Z = 3` <br/> Energy difference between `n_(2) = n and n_(1) = 2` will be <br/> `= 10 + 17 eV = 27 eV` <br/> `:. 27 = 13.6 ((1)/(2^(2)) - (1)/(n^(2))) xx 3^(2)` <br/> or `3 = 13.6 ((1)/(4) - (1)/(n^(2))) or (1)/(4) - (1)/(n^(2)) = (3)/(13.6) or (1)/(n^(2)) = (1)/(4) - (3)/(13.6) = (13.6 - <a href="https://interviewquestions.tuteehub.com/tag/12-269062" style="font-weight:bold;" target="_blank" title="Click to know more about 12">12</a>)/(4 xx 13.6)` <br/> or `n^(2) = (4 xx 13.6)/(1.6) or n = 6` <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_CHE_01_XI_C02_E03_001_S01.png" width="80%"/></body></html> | |
| 50029. |
A hydrogen-like atom (atomic number Z) is in a higher excited state of quantum number n. This excited atom can make a transition to the first excited state by successively emitting two photons of energies 10.20 eV and 17.00 eV respectively.Alternatively the atom from the same excited state can make a transition to the second excited state by snccessively emitting two photons of energies 4.25 eV and 5.95 eV respectively. Determine the values of n and Z (ionization energy of hydrogen atom = 13.6 eV) |
| Answer» <html><body><p>n=5<br/>z=2<br/>n=6<br/>z=3</p>Solution :<img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_ELT_AO_CHE_XI_V01_A_C01_E03_124_S01.png" width="80%"/> <br/>`E= (-2^2)/(n^2) (13.6eV)` <br/> `impliesR.hc.z^2 (1/<a href="https://interviewquestions.tuteehub.com/tag/9-340408" style="font-weight:bold;" target="_blank" title="Click to know more about 9">9</a> - 1/n^2) = 27.2 ….. (1)` <br/>`impliesR.hc.z^2 (1/9 - 1/n^2) = 10.2 eV…(2)` <br/>`((1))/((2))= (((n^2 - <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)/(4n^2)))/(((n^2 - 9 )/(9n^2))) = (27.2)/(10.2) = 2.66` <br/>`9(n^2 - 4)xx 4 (n^2 - 9) (2.66)` <br/>`implies9n^2 - <a href="https://interviewquestions.tuteehub.com/tag/36-309156" style="font-weight:bold;" target="_blank" title="Click to know more about 36">36</a> = 10 . 66 n^2 - 96` <br/>`therefore 1.66 n^2 = 60 impliesn^2 =(60)/(1.66) = 36`</body></html> | |
| 50030. |
(A) : Hydrogen has only one electron in its orbit but produces several spectral lines (R) : There are many excited energy levels available in a sample of Hydrogen gas |
| Answer» <html><body><p>Both (A) and (R) are <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> and (R) is the correct explanation of (A)<br/>Both (A) and (R) are true and (R) is not the correct explanation of (A)<br/>(A) is true but (R) is <a href="https://interviewquestions.tuteehub.com/tag/false-459184" style="font-weight:bold;" target="_blank" title="Click to know more about FALSE">FALSE</a> <br/>(A) is false but (R) is true </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/various-1443317" style="font-weight:bold;" target="_blank" title="Click to know more about VARIOUS">VARIOUS</a> orbits are present in H-atom</body></html> | |
| 50031. |
A hydrogen atom in the ground state is excited by monochromatic ratiation of wavelength lambda Å . The resulting spectrum consists of maximum 15 different lines. What is the wavelength lambda ? (R_H = 109677.8 cm^(-1)) |
| Answer» <html><body><p>`937.3 Å`<br/>`1025 Å`<br/>`1236 Å`<br/>`1120 Å`</p>Solution :No. of <a href="https://interviewquestions.tuteehub.com/tag/spectral-3054009" style="font-weight:bold;" target="_blank" title="Click to know more about SPECTRAL">SPECTRAL</a> lines `(<a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a>(n-1))/(2) = <a href="https://interviewquestions.tuteehub.com/tag/15-274069" style="font-weight:bold;" target="_blank" title="Click to know more about 15">15</a> impliesn = 6`<br/>`bar(upsilon) = 1/(lambda) = <a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>(1/1 - 1/(36)) = (35R)/(36)`<br/>`lambda =(36)/(35R) = 937.3A^@`</body></html> | |
| 50032. |
A hydrogen atom in an excited state emits a photon which has the longest wavelength of the Paschen series. Further emissions from the atom cannot include the |
| Answer» <html><body><p>longest wavelength of the Lyman series<br/>second longest wavelength of the Lyman series<br/>longest wavelength of the Balmer series<br/> second longest wavelength of the Balmer series </p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a> is in `3^(<a href="https://interviewquestions.tuteehub.com/tag/rd-613594" style="font-weight:bold;" target="_blank" title="Click to know more about RD">RD</a>)`orbit. It may deecite to `3 to 2 , 2 to 1 , 3 to 1 ` . Therefore , the electron isin `3^(rd)` orbit. It may de-excite <a href="https://interviewquestions.tuteehub.com/tag/like-1073845" style="font-weight:bold;" target="_blank" title="Click to know more about LIKE">LIKE</a> `3 to 2 , 2 to 1 , 3 to 1 `.Thus the other transitions do not <a href="https://interviewquestions.tuteehub.com/tag/include-11332" style="font-weight:bold;" target="_blank" title="Click to know more about INCLUDE">INCLUDE</a> `<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> to 2 `</body></html> | |
| 50033. |
A hydrogen atom emits a photon of energy 12.1 eV. By how much will the angular momentum of the electron change? |
| Answer» <html><body><p></p>Solution :`E_(n_(2)) - E_(n_(1)) = 12.1 <a href="https://interviewquestions.tuteehub.com/tag/ev-976207" style="font-weight:bold;" target="_blank" title="Click to know more about EV">EV</a> = 13.6 ((1)/(n_(1)^(2)) - (1)/(n_(2)^(2)))` <br/> This equation is correct for transition from `n_(2) = 3 " to " n_(1) = 1` <br/> Angular <a href="https://interviewquestions.tuteehub.com/tag/momentum-1100588" style="font-weight:bold;" target="_blank" title="Click to know more about MOMENTUM">MOMENTUM</a> `= (<a href="https://interviewquestions.tuteehub.com/tag/nh-570695" style="font-weight:bold;" target="_blank" title="Click to know more about NH">NH</a>)/(2pi)` <br/> `:.` Change in angular momentum `= (h)/(2pi) (n_(2) - n_(1)) = (h)/(2pi) (3 -1) = (h)/(pi) = (6.626 xx 10^(-34)Js)/(3.<a href="https://interviewquestions.tuteehub.com/tag/14-272882" style="font-weight:bold;" target="_blank" title="Click to know more about 14">14</a>)` <br/> `= 2.11 xx 10^(-14) Js`</body></html> | |
| 50034. |
A hydrocatbon with formula C_8H_(18) He gives one monochloro derivative. The hydrocarbon is: |
| Answer» <html><body><p> n- <a href="https://interviewquestions.tuteehub.com/tag/octane-1128027" style="font-weight:bold;" target="_blank" title="Click to know more about OCTANE">OCTANE</a> <br/> <a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> <a href="https://interviewquestions.tuteehub.com/tag/methyl-1095247" style="font-weight:bold;" target="_blank" title="Click to know more about METHYL">METHYL</a> <a href="https://interviewquestions.tuteehub.com/tag/heptane-1018318" style="font-weight:bold;" target="_blank" title="Click to know more about HEPTANE">HEPTANE</a> <br/>2,2,4-trimethylpentane<br/> 2,2,3,3, tertramethylbutane </p>Solution :Monochlorination</body></html> | |
| 50035. |
A hydrocarbon (X) was found to have a molecular weight of 80-85. A 10.02 mg sample took up 8.40mL of H_(2) gas measured at 0^(@)C and 760 mm pressure. Ozonolysis of (X) yields only HCHO and OHC-CHO. What was hydrocarbon? |
| Answer» <html><body><p>`C_(6)H_(8)`<br/>`C_(6)H_(10)`<br/>`C_(6)H_(12)`<br/>`C_(6)H_(14)`</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/moles-1100459" style="font-weight:bold;" target="_blank" title="Click to know more about MOLES">MOLES</a> of `H_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)` taken up <br/> `= (8.40 xx 10^(-<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>))/(22.4) = 3.75 xx 10^(-4)` <br/> Moles of compound `=(10.02 xx 10^(-3))/(22.4) = 1.254 xx 10^(-4)` <br/> <a href="https://interviewquestions.tuteehub.com/tag/thus-2307358" style="font-weight:bold;" target="_blank" title="Click to know more about THUS">THUS</a>, moles of `H_(2)` taken up by 1 mole of compound `=(3.75 xx 10^(-4))/(1.254 xx 10^(-4)) =3` <br/> Therefore, molecules has three double bonds and it may be hexa-1,3,5-triene.</body></html> | |
| 50036. |
A hydrocarbon 'X' on reduction gives 2-methyl butane. On ozonolysis it gives acetone as one of the products. The hydrocarbon is |
| Answer» <html><body><p>`CH_(3)-CH_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)-CH=CH_(2)`<br/>`CH_(3)-<a href="https://interviewquestions.tuteehub.com/tag/underset-3243992" style="font-weight:bold;" target="_blank" title="Click to know more about UNDERSET">UNDERSET</a>(CH_(3))underset(|)(<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a>)=CH-CH_(3)` <br/>`CH_(3)-CH_(2)-C-=CH`<br/>`CH_(3)-CH=CH-CH_(2)-CH_(3)`</p>Answer :B</body></html> | |
| 50037. |
A Hydrocarbon X (M.F.C_4H_6) produces an aldehyde Y through Hydrocarbon Oxidation and a ketone Z through Oxymercuration Demercuration. Y and Z are functional isomers. X gives P when treated with excess of HOCl and Q when treated with excess of HCl. The structure of X is : |
| Answer» <html><body><p>`CH_3-C-=C-CH_3`<br/>`CH_3-CH_2C-=CH`<br/>`CH_2=CH-CH=CH_2`<br/>`CH_2=CH-CH-=CH`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 50038. |
A Hydrocarbon X (M.F.C_4H_6) produces an aldehyde Y through Hydrocarbon Oxidation and a ketone Z through Oxymercuration Demercuration. Y and Z are functional isomers. X gives P when treated with excess of HOCl and Q when treated with excess of HCl. The correct statement is : |
| Answer» <html><body><p><<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>>P and <a href="https://interviewquestions.tuteehub.com/tag/q-609558" style="font-weight:bold;" target="_blank" title="Click to know more about Q">Q</a> are <a href="https://interviewquestions.tuteehub.com/tag/positional-7290189" style="font-weight:bold;" target="_blank" title="Click to know more about POSITIONAL">POSITIONAL</a> isomers<br/>Q is 1,2-Dichlorobutane<br/>P is 1,1-Dichlorobutan-2-one<br/>P and Q are identical</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50039. |
A hydrocarbon 'X' have 81% of carbon. Volume of CO_(2) liberated at 298K and 76 cm of Hg when 0.55gm of 'x' undergoes combustion |
| Answer» <html><body><p>0.90l<br/>11.09l<br/><a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>.89l<br/>1.09l</p>Solution :`<a href="https://interviewquestions.tuteehub.com/tag/100-263808" style="font-weight:bold;" target="_blank" title="Click to know more about 100">100</a> g ---- <a href="https://interviewquestions.tuteehub.com/tag/rarr-1175461" style="font-weight:bold;" target="_blank" title="Click to know more about RARR">RARR</a> 81g` <br/> `0.55g --------rarr 0.4455 g` <br/> `12g rarr24.4658l (<a href="https://interviewquestions.tuteehub.com/tag/v-722631" style="font-weight:bold;" target="_blank" title="Click to know more about V">V</a>=(nRT)/(P)=(1xx0.0821xx298)/(1))` <br/> `0.4455 g rarr 0.908 l`</body></html> | |
| 50040. |
A hydrocarbon was found to contain 91.3%C. The molecular formula of the compound is |
| Answer» <html><body><p>`C_(6)H_(6)`<br/>`C_(6)H_(7)`<br/>`C_(7)H_(<a href="https://interviewquestions.tuteehub.com/tag/8-336412" style="font-weight:bold;" target="_blank" title="Click to know more about 8">8</a>)`<br/>`C_(7)H_(7)`</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50041. |
A hydrocarbon that reacts with sodium in liquid NH_3is |
| Answer» <html><body><p>`CH_3 - CH_2 - <a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a> -= C - <a href="https://interviewquestions.tuteehub.com/tag/h-1014193" style="font-weight:bold;" target="_blank" title="Click to know more about H">H</a>` <br/>`CH_3 - C-= C - CH_3` <br/>`CH_3 - <a href="https://interviewquestions.tuteehub.com/tag/ch-913588" style="font-weight:bold;" target="_blank" title="Click to know more about CH">CH</a>= CH - CH_3` <br/>`CH_3 - CH_2 - CH = CH_2` </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html> | |
| 50042. |
A hydrocarbon P has molecular formula C_8H_(16), and it does not undergo hydrogenation with raney Ni. A on free radical chlorination yields three monochloro derivatives Q, R and S (all structural isomers) with their molecular formula C_8 H_(15)Cl. Only Q can show optical isomerism R. On further chlorination produces a dichloride C_8 H_(14) Cl_2, as one of the several isomers which on heating with sodium metal in etheral solution gives bicyclo [2, 2, 2] octane. How many stereoisomers are possible for Q? |
| Answer» <html><body><p>2<br/>4<br/>6<br/><a href="https://interviewquestions.tuteehub.com/tag/8-336412" style="font-weight:bold;" target="_blank" title="Click to know more about 8">8</a></p>Solution :Q is <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_033_S01.png" width="80%"/>It has three chiral <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</a> , <a href="https://interviewquestions.tuteehub.com/tag/hence-484344" style="font-weight:bold;" target="_blank" title="Click to know more about HENCE">HENCE</a> , ` 2^(3) =8` stereoisomers .</body></html> | |
| 50043. |
A hydrocarbon P has molecular formula C_8H_(16), and it does not undergo hydrogenation with raney Ni. A on free radical chlorination yields three monochloro derivatives Q, R and S (all structural isomers) with their molecular formula C_8 H_(15)Cl. Only Q can show optical isomerism R. On further chlorination produces a dichloride C_8 H_(14) Cl_2, as one of the several isomers which on heating with sodium metal in etheral solution gives bicyclo [2, 2, 2] octane. If S is dichlorinated, how many isomers would be produced? (exclude stereoisomers) |
| Answer» <html><body><p>2<br/>3<br/>5<br/>7</p>Solution :S is <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_034_S01.png" width="80%"/></body></html> | |
| 50044. |
A hydrocarbon P has molecular formula C_8H_(16), and it does not undergo hydrogenation with raney Ni. A on free radical chlorination yields three monochloro derivatives Q, R and S (all structural isomers) with their molecular formula C_8 H_(15)Cl. Only Q can show optical isomerism R. On further chlorination produces a dichloride C_8 H_(14) Cl_2, as one of the several isomers which on heating with sodium metal in etheral solution gives bicyclo [2, 2, 2] octane. Which of the following satisfy the criteria for P? |
| Answer» <html><body><p><img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_032_O01.png" width="30%"/> <br/><img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_032_O02.png" width="30%"/> <br/><img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_032_O03.png" width="30%"/> <br/><img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_032_O04.png" width="30%"/> </p>Solution :It <a href="https://interviewquestions.tuteehub.com/tag/gives-1007647" style="font-weight:bold;" target="_blank" title="Click to know more about GIVES">GIVES</a> three positioned <a href="https://interviewquestions.tuteehub.com/tag/isomers-1052476" style="font-weight:bold;" target="_blank" title="Click to know more about ISOMERS">ISOMERS</a> on <a href="https://interviewquestions.tuteehub.com/tag/mono-11612" style="font-weight:bold;" target="_blank" title="Click to know more about MONO">MONO</a> <a href="https://interviewquestions.tuteehub.com/tag/chlorination-15933" style="font-weight:bold;" target="_blank" title="Click to know more about CHLORINATION">CHLORINATION</a><br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E01_032_S01.png" width="80%"/></body></html> | |
| 50045. |
A hydrocarbon ono oxidation ozonolysisproduces Oxalic acid and Butanedioic acid. Its structure is |
| Answer» <html><body><p><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_073_O01.png" width="30%"/> <br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_073_O02.png" width="30%"/> <br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_073_O03.png" width="30%"/> <br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_073_O04.png" width="30%"/> </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_073_S01.png" width="80%"/></body></html> | |
| 50046. |
A hydrocarbon of molecular formula C_(4)H_(6) decolourises bromine water and gives white ppt with Tollens reagent. This hydrocarbon on hydration gives butanone. The hydrocarbon is : |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>, <a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a> - butadiene<br/>Cyclobutene<br/>1 - <a href="https://interviewquestions.tuteehub.com/tag/butyne-404335" style="font-weight:bold;" target="_blank" title="Click to know more about BUTYNE">BUTYNE</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> - butyne</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 50047. |
A hydrocarbon has the molecular mass 70. Write all the possible structural isomers and give their IUPAC names |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :The hydrocarbon having <a href="https://interviewquestions.tuteehub.com/tag/molecular-562994" style="font-weight:bold;" target="_blank" title="Click to know more about MOLECULAR">MOLECULAR</a> <a href="https://interviewquestions.tuteehub.com/tag/mass-1088425" style="font-weight:bold;" target="_blank" title="Click to know more about MASS">MASS</a> of 70 is `C_5H_10`. It exists in the following four structural isomers : (i)`CH_3CH_2CH_2CH=CH_2` (pent-1-ene), (ii)`(CH_3)_2CH-CH=CH_2` (3-methylbut-1-ene) , (<a href="https://interviewquestions.tuteehub.com/tag/iii-497983" style="font-weight:bold;" target="_blank" title="Click to know more about III">III</a>)`CH_3CH_2CH=CHCH_3` (pent-2-ene) and (<a href="https://interviewquestions.tuteehub.com/tag/iv-501699" style="font-weight:bold;" target="_blank" title="Click to know more about IV">IV</a>)`(CH_3)_2C=CHCH_3` (2-methylbut-2-ene)]</body></html> | |
| 50048. |
A hydrocarbon decolourised bromine water. On ozonolysis it gives 3-methyl butanal and acetaldehyde. Write the structure of the hydrocarbon. |
| Answer» <html><body><p></p>Solution : Since the given hydrocarbon decolourises bromine <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a>, it <a href="https://interviewquestions.tuteehub.com/tag/must-2185568" style="font-weight:bold;" target="_blank" title="Click to know more about MUST">MUST</a> be an unsaturated hydrocarbon. On ozonolysis it gives two aldehydes. Therefore, it must be an alkene. The products of ozonolysis are<br/>`<a href="https://interviewquestions.tuteehub.com/tag/underset-3243992" style="font-weight:bold;" target="_blank" title="Click to know more about UNDERSET">UNDERSET</a>("3-methylbutanal")(CH_3 - undersetoverset(|)(CH_3)(C)H - CH_2 - oversetunderset(|)(H)(C)= O)underset("acetaldehyde")(CH_3 - oversetunderset(|)(H)(C) = O)`<br/>The <a href="https://interviewquestions.tuteehub.com/tag/structure-1230280" style="font-weight:bold;" target="_blank" title="Click to know more about STRUCTURE">STRUCTURE</a> of the given alkene can be obtained by joining the oxygenated carbons of the two aldehydes by a double <a href="https://interviewquestions.tuteehub.com/tag/bond-900583" style="font-weight:bold;" target="_blank" title="Click to know more about BOND">BOND</a>. Hence, the given hydrocarbon is<br/>`underset(5-methylhex-2-ene ")(CH_3- undersetoverset(|)(CH_3)(C)H - CH_2 - oversetunderset(|)(H)(C) = oversetunderset(|)(H)(C)- CH_3`</body></html> | |
| 50049. |
A hydrocarbon contains 85.7 % C. If 42 mg of the compound contains 3.01xx10^(20)molecules, the molecular formula of the compound will be ...... |
| Answer» <html><body><p>`C_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)H_(6)`<br/>`C_(6)H_(12)`<br/>`C_(12)H_(24)`<br/>`C_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)H_(4)`</p>Solution :Mass of `3.01xx10^(20)` <a href="https://interviewquestions.tuteehub.com/tag/atoms-887421" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMS">ATOMS</a> `=42xx10^(-3)g` <br/> `:.` Mass of `6.02xx10^(<a href="https://interviewquestions.tuteehub.com/tag/23-294845" style="font-weight:bold;" target="_blank" title="Click to know more about 23">23</a>)` atoms `=84g` <br/> `:.` Molecular formula : `C_(6)H_(12)` (C of 85.7)</body></html> | |
| 50050. |
A hydrocarbon contains 90% carbon by weight. What is its empirica formula? |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :`C_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)H_(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)`</body></html> | |