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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.
| 49201. |
(A): The enthalpy of neutralisation of a strong acid by a strong base is a constant. (R) : The net reaction that takes place is the same. |
| Answer» <html><body><p>Both A and R are true 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>. <br/>Both A and R are true R is not the correct explanation. <br/>A is true but R is false <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</body></html> | |
| 49202. |
Assertion(A ): The enthalpies of elements in their standard states are taken as zero Reason (R ): It is impossible to determine the absolute enthalpy of any substance |
| 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 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. <br/>Both A and R are true R is not the correct explanation. <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/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 49203. |
Assertion (A) : The energy of ultraviolet radiation is greater than the energy of infrared radiation Reason (R) : The velocity of ultraviolet radiation is greater than the velocity of infrared radiation |
| 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 <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 but R is not the correct explanation of A<br/>A is true and 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/>R is true and A is false </p>Solution :All EMR travel with same velocity</body></html> | |
| 49204. |
(A) : The energy of electrons is largely determined by its principal quantum number. (R) : The principal quantum number is a measure of most probable distance of finding the electron around the nucleus |
| 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 <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>Solution :E is <a href="https://interviewquestions.tuteehub.com/tag/function-11303" style="font-weight:bold;" target="_blank" title="Click to know more about FUNCTION">FUNCTION</a> of n</body></html> | |
| 49205. |
(A) : The energy of electron is largely determined by its principal quantm number. (R) : The principal quantum number is a measure of most probable distance of finding the arond the nucleus |
| 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 <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 <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/>(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</body></html> | |
| 49206. |
(A) : The electronic configuration of Cr is [Ar]3d^(5)4s^(1) but not [Ar]3d^(4)4s^(2) (R) : Lowering energy with configuration [Ar]3d^(5) 4s^(1) is more than that with configuration [Ar]3d^(4)4s^(2) |
| 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> <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/>(A) is false but (R) is true </p>Solution :Exchange <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> is more</body></html> | |
| 49207. |
(a) The electronicin Bohr's orbit is negative. How will you account for it ? (b) The ionisation energy of hydrogen atom is 13.6 eV. What will be the energy of the first orbit of He^(+) and Li^(2+) ions are ? |
| 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> :`E_1" of " He^(+) =-54.4 <a href="https://interviewquestions.tuteehub.com/tag/ev-976207" style="font-weight:bold;" target="_blank" title="Click to know more about EV">EV</a> , E_1 " of " <a href="https://interviewquestions.tuteehub.com/tag/li-1072885" style="font-weight:bold;" target="_blank" title="Click to know more about LI">LI</a>^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>+) =-122.4 eV`</body></html> | |
| 49208. |
(A): The dipole moment value of NH_3 is greater than zero (B): In NH_3 bond angle is approximately 104^@ |
| 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 <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> <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/>(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> | |
| 49209. |
(A): The dipolemoment value of NH_3 is greater than zero (R) : In NH_3 bond angle is approximately 104^@ |
| 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 <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>Answer :A</body></html> | |
| 49210. |
(A): The difference in the successive oxidation states exhibited by transition elements is unity only. (R) : d-Orbitals of transition elements are incompletely filled. |
| 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 <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<br/>Both A and R are true but 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 :B</body></html> | |
| 49211. |
(A): The carbon -carbon bond lengths in benzene molecule are 1.54 A^@ and 1.34A^@ (R): Benzene has delocalised p - bonds |
| 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 <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. 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/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html> | |
| 49212. |
A: The boiling point of H_2O_2 cannot be dtermined experimentally by distillation.R : H_2O_2 decomposes into H_2 and O_2 below itsboilingpoint |
| Answer» <html><body><p>both A and R are true, R is not the correct explanation to A<br/>both A and R are true , R is the correct explanation to A <br/>A 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> but R is true <br/>A is true but R is false</p>Answer :D</body></html> | |
| 49213. |
(A): The atomic size of gallium is less than expected (R): In gallium the 3^(10) delectrons do not shield effectively |
| 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> | |
| 49214. |
A tetravalent element forms monoxide and dioxide with oxygen. When air is passed over heated element (1273 K), producer gas is obtained. Monoxide of the element is a powerful reducing agent and reduces ferric oxide to iron. Identify the element and write formulas of its monoxide and dioxide. Write chemical equations for the formation of producer gas and reduction of ferric oxide with the monoxide. |
| Answer» <html><body><p></p>Solution :Producer gas is a mixture of `CO_((g))`and `N_(2(g))` . Carbon is tetravalent and gives <a href="https://interviewquestions.tuteehub.com/tag/monoxide-2842046" style="font-weight:bold;" target="_blank" title="Click to know more about MONOXIDE">MONOXIDE</a> (CO) and dioxide `(CO_2)` with oxygen <br/> `2C_((s)) + ubrace(O_(2(g)) + 4N_(2(g)))_"Air"overset"1273 K"to ubrace(2CO_((g)) + 4N_(2(g)))_"Producer gas"`<br/> The carbon monoxide a strong reducing agents and <a href="https://interviewquestions.tuteehub.com/tag/reduces-621012" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCES">REDUCES</a> <a href="https://interviewquestions.tuteehub.com/tag/ferric-2082561" style="font-weight:bold;" target="_blank" title="Click to know more about FERRIC">FERRIC</a> oxide to iron. <br/> `Fe_2O_(3(s)) + 3CO_((g)) <a href="https://interviewquestions.tuteehub.com/tag/oversetdeltato-2905750" style="font-weight:bold;" target="_blank" title="Click to know more about OVERSETDELTATO">OVERSETDELTATO</a> 2Fe_((s)) + 3CO_(2(g))`</body></html> | |
| 49215. |
A tetravalentelement formsmonoxide and disoxidewit oxygen. When air is passed over heated element (1273 K). Producer gas is obtained. Monoxide of the lement is a powerful reducing agent and reduces ferric oxide to iron. The element and write formulas of its monoxideand dioxide. Write chemicalequationsfor the formationof producera gas and reduction if ferric oxidewith the monoxide. |
| Answer» <html><body><p></p>Solution :Since producer gas is amixtureof <a href="https://interviewquestions.tuteehub.com/tag/co-920124" style="font-weight:bold;" target="_blank" title="Click to know more about CO">CO</a> and `N_(2)`, therefore , thetetravalentelementis carbonand its monoxideand dioxideare CO and `CO_(2)` respectively.<br/> `2C(s) + ubrace(O_(2)(g)+4N_(2)(g))_("Air") overset(1273K)rarrubrace(<a href="https://interviewquestions.tuteehub.com/tag/2co-300291" style="font-weight:bold;" target="_blank" title="Click to know more about 2CO">2CO</a>(g)+4N_(2)(g))_("Producer gas")` <br/> The monoxide of <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</a> , is a strongreducing agent and reduces ferric <a href="https://interviewquestions.tuteehub.com/tag/oxide-1144484" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDE">OXIDE</a> to iron. <br/> `Fe_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)(s) + 3CO(g) overset(Delta)rarr 2 Fe(s) + 3O_(2)(g)`.</body></html> | |
| 49216. |
A tetravalent element forms monoxide and dioxide with oxygen. When air is passed over heated element (1273k), producer gas is obtained. Monoxide of the element is a powerful reducing agent and reduces ferric oxide to iron. Identify the element and write formulas of its monoxide and dioxide. write chemical equations for the formation of producer gas and reduction of ferric oxide with the monoxide. |
| Answer» <html><body><p></p>Solution :Producer gas is a mixture of CO and `N_(2)`, <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a> the tetravalent element is carbon and its monoxide and dioxide are CO and `CO_(2)` respectively <br/> `2C(s)+underset("<a href="https://interviewquestions.tuteehub.com/tag/air-852233" style="font-weight:bold;" target="_blank" title="Click to know more about AIR">AIR</a>")(underbrace(O_(2)(s)+4N_(2)(g)))<a href="https://interviewquestions.tuteehub.com/tag/overset-2905731" style="font-weight:bold;" target="_blank" title="Click to know more about OVERSET">OVERSET</a>(1273K)(rarr)underset("Producer gas")(underbrace(2CO(g)+4N_(2)(g)))` <br/> The carbon monoxide is a strong reducing agent and reduces <a href="https://interviewquestions.tuteehub.com/tag/ferric-2082561" style="font-weight:bold;" target="_blank" title="Click to know more about FERRIC">FERRIC</a> oxide to iron <br/> `Fe_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)(s)+3CO(g)overset(Delta)(rarr)2Fe(s)+3CO_(2)(g)`.</body></html> | |
| 49217. |
A tertiary alcohol H upon acid- catalyzed dehydration gives a product I. Ozonolysis of to compounds J and K. Compound J upon reaction with KOH gives benzly alcohol and a compound L, whereas K on reaction with KOH gives only M. The structures of compound J,K and L respectively , are |
| Answer» <html><body><p>`PhCOCH_(3),PhCH_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)COCH_(3)`and`PhCH_(2)COO^(-)K^(+)`<br/>`PhCHO,PhCH_(2)<a href="https://interviewquestions.tuteehub.com/tag/cho-408392" style="font-weight:bold;" target="_blank" title="Click to know more about CHO">CHO</a>`and`PhCOO^(-)K^(+)`<br/>`PhCOCH_(3),PhCH_(2)CHO`and`CH_(3)COO^(-)K^(+)`<br/>`PhCHO,PhCOCH_(3)`and` PhCOO^(-)K^(+)`</p>Solution :`H=Ph-CH_(2)underset(CH_(3))underset(|)overset(<a href="https://interviewquestions.tuteehub.com/tag/oh-585115" style="font-weight:bold;" target="_blank" title="Click to know more about OH">OH</a>)overset(|)(C)-PhI=Ph-CH=underset(CH_(3))underset(|)(C)-Ph" " K=Ph-underset(O)underset(||)(C) -CH_(3)`<br/>`underset((J))(Ph-CHO)overset(OH^(-))underset(("<a href="https://interviewquestions.tuteehub.com/tag/cannizaro-2497964" style="font-weight:bold;" target="_blank" title="Click to know more about CANNIZARO">CANNIZARO</a> reaction"))to underset((L))(Ph-CH_(2)OH+Ph-COO^(-)K^(+)`</body></html> | |
| 49218. |
A tertiary alcohol H upon acid- catalyzed dehydration gives a product I. Ozonolysis of to compounds J and K. Compound J upon reaction with KOH gives benzly alcohol and a compound L, whereas K on reaction with KOH gives only M. The structure of compound I is |
| Answer» <html><body><p><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_294_O01.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_294_O02.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_294_O03.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_294_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> :`H=<a href="https://interviewquestions.tuteehub.com/tag/ph-1145128" style="font-weight:bold;" target="_blank" title="Click to know more about PH">PH</a>-CH_(2)underset(CH_(3))underset(|)overset(<a href="https://interviewquestions.tuteehub.com/tag/oh-585115" style="font-weight:bold;" target="_blank" title="Click to know more about OH">OH</a>)overset(|)(C)-PhI=Ph-CH=underset(CH_(3))underset(|)(C)-Ph" " K=Ph-underset(O)underset(||)(C) -CH_(3)`<br/>`underset((J))(Ph-CHO)overset(OH^(-))underset(("<a href="https://interviewquestions.tuteehub.com/tag/cannizaro-2497964" style="font-weight:bold;" target="_blank" title="Click to know more about CANNIZARO">CANNIZARO</a> reaction"))to underset((L))(Ph-CH_(2)OH+Ph-COO^(-)K^(+)`</body></html> | |
| 49219. |
A tennis ball of mass 6.0 xx 10^(-2) kg is moving with a speed of 62 ms^(-1). Calculate the wavelength associated with this moving tennis ball. Will the movement of this ball exhibit a wave character? Explain. |
| 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> :`1.8 xx 10^(-<a href="https://interviewquestions.tuteehub.com/tag/34-308171" style="font-weight:bold;" target="_blank" title="Click to know more about 34">34</a>)m`. No because the <a href="https://interviewquestions.tuteehub.com/tag/wavelength-1450414" style="font-weight:bold;" target="_blank" title="Click to know more about WAVELENGTH">WAVELENGTH</a> is too <a href="https://interviewquestions.tuteehub.com/tag/small-1212368" style="font-weight:bold;" target="_blank" title="Click to know more about SMALL">SMALL</a> to be observed</body></html> | |
| 49220. |
(A) : Temporary hardness can be removed by boiling hard water (R) : On boiling hard water bicarbonates of calcium and magnesium are converted to insoluble carbonates |
| 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 <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 <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/>A is false but R is true </p>Answer :A</body></html> | |
| 49221. |
A tank contains a mixture of 52.5g of oxygen and 65.1g of CO_(2) at 300K the total presuure in the tank is 9.21atm. Calculate the partial pressure (in atm) of each gas in the mixture? |
| 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><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :`m_(o_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>))=52.5g` `P_(O_(2))=?` T=300K <br/> `m_(CO_(2))=65.1g` `P_(CO_(2))=?` `P=9.21atm` <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/FM_CHE_XI_SP_03_E01_029_S01.png" width="80%"/></body></html> | |
| 49222. |
A tandard hydrogen electrode has zero electrode potential because |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/hydrogen-22331" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROGEN">HYDROGEN</a> is easiest ot oxidize <br/>this <a href="https://interviewquestions.tuteehub.com/tag/electrode-968538" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRODE">ELECTRODE</a> <a href="https://interviewquestions.tuteehub.com/tag/potential-1161228" style="font-weight:bold;" target="_blank" title="Click to know more about POTENTIAL">POTENTIAL</a> is assumed to be zero <br/>hydrogen atom has oly one electron <br/>hydrogen is the lighest <a href="https://interviewquestions.tuteehub.com/tag/element-969236" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENT">ELEMENT</a> </p>Answer :b</body></html> | |
| 49223. |
(a). Take 1 L of a mixture of CO and CO_(2) Pass this mixture through a tube containing red hot charcoal. The volume now becomes 1.6 L. The volumes are measured under the same conditions. Find the composition of the mixture by volume. (b). A compound contains 28 percent of nitrogen 72 percent of ametal by weight. Three atoms of the metal combine with two atoms of N. find the atomic weight of the metal. |
| Answer» <html><body><p></p>Solution :(a). Let the volume of CO in the mixture be <a href="https://interviewquestions.tuteehub.com/tag/v-722631" style="font-weight:bold;" target="_blank" title="Click to know more about V">V</a>. <br/> The volume of `CO_(2)` in the mixture is `(1-V)` <br/> `CO_(2)+Cto2CO` <br/> `(1-V)LCO_(2)` forms `2(1-V)LCO`. <br/> Total CO, <br/> `V+2(1-V)=1.6` <br/> or `V=0.4` <br/> `CO=0.4L` <br/> `CO_(2)=1-V=0.6L` <br/> (b). <a href="https://interviewquestions.tuteehub.com/tag/28-299271" style="font-weight:bold;" target="_blank" title="Click to know more about 28">28</a> g of nitrogen combines with 72 g of metal. three atoms of metal. Three atoms of metal combine with two atoms of nitrogen. This means the valency of metal is 2. <br/> " Eq of "`<a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a>=(28)/((14)/(3))=(1)/(6)` <br/> " Eq of "metal `=(72)/((M)/(2))=(144)/(M)` <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>(1)/(6)=(144)/(M)impliesM=(144)/(6)=24g`</body></html> | |
| 49224. |
A system which can exchange energy with the surrounding but not matter is called |
| Answer» <html><body><p>A heterogeneous system<br/>An open system<br/>A <a href="https://interviewquestions.tuteehub.com/tag/closed-919469" style="font-weight:bold;" target="_blank" title="Click to know more about CLOSED">CLOSED</a> system<br/>An isolated system</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> | |
| 49225. |
A system undergoes a process in which DeltaU = + 300 J while absorbing 400 J of heat energy and undergoing an expansion against 0.5 bar. What is the change in the volume (in L)? |
| Answer» <html><body><p>4<br/>5<br/>2<br/>3</p>Solution :`DeltaU=q+w`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/300-305868" style="font-weight:bold;" target="_blank" title="Click to know more about 300">300</a> = <a href="https://interviewquestions.tuteehub.com/tag/400-315233" style="font-weight:bold;" target="_blank" title="Click to know more about 400">400</a> -0.5 xxDeltaVxx100`<br/> `<a href="https://interviewquestions.tuteehub.com/tag/deltav-2053504" style="font-weight:bold;" target="_blank" title="Click to know more about DELTAV">DELTAV</a> = <a href="https://interviewquestions.tuteehub.com/tag/2l-300409" style="font-weight:bold;" target="_blank" title="Click to know more about 2L">2L</a>`</body></html> | |
| 49226. |
A system undergoes two cyclic process 1 and 2. Process 1 is reversible and process 2 is irreversible. The correct statement relating to the two processes is |
| Answer» <html><body><p>`Delta S` (for <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> 1) = 0, while `Delta S` (for process <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/ne-1112263" style="font-weight:bold;" target="_blank" title="Click to know more about NE">NE</a> 0`<br/>`q_("<a href="https://interviewquestions.tuteehub.com/tag/cyclic-2559324" style="font-weight:bold;" target="_blank" title="Click to know more about CYCLIC">CYCLIC</a>")= 0` for process 1 and `q_("cyclic") ne 0` for process 2<br/>More heat can be converted to work in process 1 than in process 2<br/>More work can be converted to heat in process 1 than in process 2</p>Solution :Reversible process converts more heat to work and vice-versa</body></html> | |
| 49227. |
A system receives 224 Joule heat and does work of 156 Joule. Calculate the change in internal energy. |
| 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> :<a href="https://interviewquestions.tuteehub.com/tag/68-331600" style="font-weight:bold;" target="_blank" title="Click to know more about 68">68</a> <a href="https://interviewquestions.tuteehub.com/tag/joule-526299" style="font-weight:bold;" target="_blank" title="Click to know more about JOULE">JOULE</a></body></html> | |
| 49228. |
A system receives 100 Joule heat and does work of 50 Joule. Calculate the change in the internal energy? |
| Answer» <html><body><p>`-<a href="https://interviewquestions.tuteehub.com/tag/150-275254" style="font-weight:bold;" target="_blank" title="Click to know more about 150">150</a>` <a href="https://interviewquestions.tuteehub.com/tag/joule-526299" style="font-weight:bold;" target="_blank" title="Click to know more about JOULE">JOULE</a><br/><a href="https://interviewquestions.tuteehub.com/tag/50-322056" style="font-weight:bold;" target="_blank" title="Click to know more about 50">50</a> Joule<br/>`-50` Joule<br/>150 Joule</p>Answer :<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> | |
| 49229. |
A system receives 100 calory heat at that time 50 calory work is done by system. Calculate the change in internal energy. |
| 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> :<a href="https://interviewquestions.tuteehub.com/tag/50-322056" style="font-weight:bold;" target="_blank" title="Click to know more about 50">50</a> <a href="https://interviewquestions.tuteehub.com/tag/calory-7671359" style="font-weight:bold;" target="_blank" title="Click to know more about CALORY">CALORY</a></body></html> | |
| 49230. |
A system is taken from state A to B through three different paths 1,2 and 3. The work done is maximum is : |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> 1<br/>process 2<br/>process 3<br/>equal in all magnitude</p>Answer :D</body></html> | |
| 49231. |
A system is provided with 50 J of heat and the work done on the system is 10J .What is the change in internal energy of the system in joules ? |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/60-328817" style="font-weight:bold;" target="_blank" title="Click to know more about 60">60</a> <br/>40<br/>50<br/>10 </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> | |
| 49232. |
A system is changed from initial state to finalstate in such amanner that DeltaH=q . If the same change from initialstate to final statewere made bydifferent path , whichof the following statementsare correct? |
| Answer» <html><body><p>`DeltaH`<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 <br/>`DeltaH` will depends <a href="https://interviewquestions.tuteehub.com/tag/upon-2315586" style="font-weight:bold;" target="_blank" title="Click to know more about UPON">UPON</a> the path <br/>Heat exchangewill besame if thepath isisobaric <br/>Heat ecchanged <a href="https://interviewquestions.tuteehub.com/tag/q-609558" style="font-weight:bold;" target="_blank" title="Click to know more about Q">Q</a> will be differentif the path is non-iosbric.</p>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>,d</body></html> | |
| 49233. |
A system consisting of one mole of an ideal diatomic gas absorbs 200J of heat and does 50J of work on surroundings. What is the change in temperature if vibrational modes of motion are inactive? |
| Answer» <html><body><p>`(150J mol^(-<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>))/(8.314 xx (5)/(2))`<br/>`(150J mol^(-1))/(8.314 xx (<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)/(2))`<br/>`(150J mol^(-1))/(8.314 xx (<a href="https://interviewquestions.tuteehub.com/tag/7-332378" style="font-weight:bold;" target="_blank" title="Click to know more about 7">7</a>)/(2))`<br/>`(150J mol^(-1))/(8.314 xx (<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)/(3))`</p>Solution :`<a href="https://interviewquestions.tuteehub.com/tag/delta-947703" style="font-weight:bold;" target="_blank" title="Click to know more about DELTA">DELTA</a> E = (3)/(2) R Delta T + R Delta T` (Rot + Trans)</body></html> | |
| 49234. |
A system has internal energy equal to E_1, 450 J of heat is taken out of it and 600 J of work is done on it. The final energy of the system will be |
| Answer» <html><body><p>`(E_1+ <a href="https://interviewquestions.tuteehub.com/tag/150-275254" style="font-weight:bold;" target="_blank" title="Click to know more about 150">150</a>)`<br/>`(E_1 + <a href="https://interviewquestions.tuteehub.com/tag/1050-1773012" style="font-weight:bold;" target="_blank" title="Click to know more about 1050">1050</a>)`<br/>`(E_1 - 150)` <br/><a href="https://interviewquestions.tuteehub.com/tag/none-580659" style="font-weight:bold;" target="_blank" title="Click to know more about NONE">NONE</a> of these </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> | |
| 49235. |
A systemcontains 1 mole of a monoatomic ideal gas . Now1 mole ofa diatomic non-reacting idealgasisaddedinto the systemat constantvolume and temperature. Due to addition diatomicgas ,Choosethe incorrectstatement, regarding the new system : |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/enthalpy-15226" style="font-weight:bold;" target="_blank" title="Click to know more about ENTHALPY">ENTHALPY</a> of systemwillincrease <br/><a href="https://interviewquestions.tuteehub.com/tag/adiabatic-849856" style="font-weight:bold;" target="_blank" title="Click to know more about ADIABATIC">ADIABATIC</a> coefficient`(lambda=C_(p)//C_(V))`of the <a href="https://interviewquestions.tuteehub.com/tag/system-1237255" style="font-weight:bold;" target="_blank" title="Click to know more about SYSTEM">SYSTEM</a><br/> will decrease<br/>Internal energyof the system remainsconstant .<br/>Pressureenergysystemwill <a href="https://interviewquestions.tuteehub.com/tag/increase-1040383" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASE">INCREASE</a> . </p>Answer :C</body></html> | |
| 49236. |
A system absorbs 600J of energy and does work equivalent to 400J J of energy. The internal energy changes |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/1000j-265761" style="font-weight:bold;" target="_blank" title="Click to know more about 1000J">1000J</a> <br/>200J<br/>600J<br/>300J </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> | |
| 49237. |
A system absorbs 'xJ' heat and does "yJ" work. Its Delta E is +Ve when |
| Answer» <html><body><p>`y <a href="https://interviewquestions.tuteehub.com/tag/gt-1013864" style="font-weight:bold;" target="_blank" title="Click to know more about GT">GT</a> <a href="https://interviewquestions.tuteehub.com/tag/x-746616" style="font-weight:bold;" target="_blank" title="Click to know more about X">X</a>`<br/>`x gt y`<br/>`y =<a href="https://interviewquestions.tuteehub.com/tag/2x-301182" style="font-weight:bold;" target="_blank" title="Click to know more about 2X">2X</a>`<br/>`x=y` </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> | |
| 49238. |
A system absorbs 100J of heat at constant volume and its temperature raises from 300K to 320K, Calculate the change in internal energy. |
| Answer» <html><body><p></p>Solution :At <a href="https://interviewquestions.tuteehub.com/tag/constant-930172" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTANT">CONSTANT</a> <a href="https://interviewquestions.tuteehub.com/tag/volume-728707" style="font-weight:bold;" target="_blank" title="Click to know more about VOLUME">VOLUME</a>, work done is zero. Hence <a href="https://interviewquestions.tuteehub.com/tag/change-913808" style="font-weight:bold;" target="_blank" title="Click to know more about CHANGE">CHANGE</a> in <a href="https://interviewquestions.tuteehub.com/tag/internal-517481" style="font-weight:bold;" target="_blank" title="Click to know more about INTERNAL">INTERNAL</a> energy, `Delta E =q= <a href="https://interviewquestions.tuteehub.com/tag/100-263808" style="font-weight:bold;" target="_blank" title="Click to know more about 100">100</a> J`</body></html> | |
| 49239. |
A system absorbs 50 kJ heat and does 20 kJ of work. What is the net change in the internal energy of the system ? |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/increase-1040383" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASE">INCREASE</a> by <a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a> kJ<br/>Decrease by 30 kJ<br/>Increase by 70 kJ<br/>Decrease by 70 kJ</p>Solution :`DeltaU=q+(-w)=<a href="https://interviewquestions.tuteehub.com/tag/50-322056" style="font-weight:bold;" target="_blank" title="Click to know more about 50">50</a>+(-<a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a>)=30kJ`</body></html> | |
| 49240. |
A system absorbs 10kJ of heat at constant volume and its temperature rises from 27^(0)C " to " 37^(0)C. The DE of reaction is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/100-263808" style="font-weight:bold;" target="_blank" title="Click to know more about 100">100</a> <a href="https://interviewquestions.tuteehub.com/tag/kj-1063034" style="font-weight:bold;" target="_blank" title="Click to know more about KJ">KJ</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/10kj-1774457" style="font-weight:bold;" target="_blank" title="Click to know more about 10KJ">10KJ</a> <br/>0 <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> KJ </p>Answer :B</body></html> | |
| 49241. |
A system absorbs 10kJ of heat at constant volume and its temperature rises from 27^(@)C " to" 37^(@)C. The Delta E of reaction is |
| Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/100-263808" style="font-weight:bold;" target="_blank" title="Click to know more about 100">100</a> <a href="https://interviewquestions.tuteehub.com/tag/kj-1063034" style="font-weight:bold;" target="_blank" title="Click to know more about KJ">KJ</a> `<br/>`<a href="https://interviewquestions.tuteehub.com/tag/10kj-1774457" style="font-weight:bold;" target="_blank" title="Click to know more about 10KJ">10KJ</a>`<br/>0<br/>1KJ </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> | |
| 49242. |
A synthetic mixture of nitrogen and Argon has a density of 1.4 g L^(-1) at 0^@C. Calculate the average molecular weight. Find out the volume percentage of nitrogen in the mixture. |
| Answer» <html><body><p></p>Solution :Molecular weight (M) can be obtained from density (d) as, `M=(dRT)/(P )` <br/> Average molecular weight of the mixture =` (1.4 xx 0.0821 xx 273 )/(1) = 31.4` <br/> If the % <a href="https://interviewquestions.tuteehub.com/tag/volume-728707" style="font-weight:bold;" target="_blank" title="Click to know more about VOLUME">VOLUME</a> of `N_2 ` is .x. <br/> ` 31.4 = ( x xx 28+(100-x)40)/( 100 )implies12 x = <a href="https://interviewquestions.tuteehub.com/tag/840-1928616" style="font-weight:bold;" target="_blank" title="Click to know more about 840">840</a> orx=70` <br/> The volume <a href="https://interviewquestions.tuteehub.com/tag/percentage-13406" style="font-weight:bold;" target="_blank" title="Click to know more about PERCENTAGE">PERCENTAGE</a> of `N_2` in the mixture = 70</body></html> | |
| 49243. |
A symmetrical organic compound of C_(4)H_(11)N give yellow oily layer on treatement with HNO_(2) then find the structure of the compound. |
| Answer» <html><body><p><br/></p>Answer :`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>)CH_(2)NHCH_(2)CH_(3)` (`2^(@)` <a href="https://interviewquestions.tuteehub.com/tag/amine-859201" style="font-weight:bold;" target="_blank" title="Click to know more about AMINE">AMINE</a>)</body></html> | |
| 49244. |
A swimmer coming out from a pool is covered with a film of water weighing about 18g. How much heat must be supplied to evaporate this water at 298 K? Calculate the internal energy of vaporisation at 100^@C. DeltaH_(vap)^@ for water at 373K = 40.66 kJ mol^(-1) |
| Answer» <html><body><p></p>Solution :We can represent the <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> of <a href="https://interviewquestions.tuteehub.com/tag/evaporation-16312" style="font-weight:bold;" target="_blank" title="Click to know more about EVAPORATION">EVAPORATION</a> as<br/> `H_(2)O_((l)) overset("vaporisation")(rarr)H_2O_((g)) , <a href="https://interviewquestions.tuteehub.com/tag/delta-947703" style="font-weight:bold;" target="_blank" title="Click to know more about DELTA">DELTA</a> = 1 - 0 = 1` <br/> `Delta_(vap) E = Delta_(vap)H - pDeltaV =Delta_(vap) H - DeltanRT` <br/> (assumig steam <a href="https://interviewquestions.tuteehub.com/tag/behaving-2465187" style="font-weight:bold;" target="_blank" title="Click to know more about BEHAVING">BEHAVING</a> as an ideal gas). <br/> `Delta_(vap) E = 40.66 kJ mol^(-1) - (1)` <br/> `(8.314 xx 10^(-3) KJ <a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a>^(-1) mol^(-1))(373 K) = 37.56 kJ mol^(-1)`.</body></html> | |
| 49245. |
A swimmer coming out from a pool is covered with a film of water weighing about 18g. How much heat must be supplied to evaporate this water at 298 K ? Calculate the internal energy of vaporization at 100°C. Delta_("vap") H^( Theta ) for water at 373K = 40.66 "kJ mol"^(-1) |
| Answer» <html><body><p></p>Solution :We can represent the process of <a href="https://interviewquestions.tuteehub.com/tag/evaporation-16312" style="font-weight:bold;" target="_blank" title="Click to know more about EVAPORATION">EVAPORATION</a> as `18g H_(2) O_((l)) overset("vaprisation")(to) 18g H_(2) O_((g))` <br/> No. of moles in `18 g, H_(2) O_((l))` is `= (18g)/( 18 "g mol"^(-1) )=1` mol <br/> `Delta_("vap") U= Delta_("vap") <a href="https://interviewquestions.tuteehub.com/tag/h-1014193" style="font-weight:bold;" target="_blank" title="Click to know more about H">H</a>^( Theta ) - <a href="https://interviewquestions.tuteehub.com/tag/pdeltav-2211139" style="font-weight:bold;" target="_blank" title="Click to know more about PDELTAV">PDELTAV</a> = Delta_("vap") H^( Theta ) - Deltan_(g) RT` <br/> (assuming steam behaving as an ideal gas) <br/> `Delta_("vap") H^( Theta ) - Delta n_(g) RT = 40.66 "kJ mol"^(-1) -(1)` <br/> `(8.314 "<a href="https://interviewquestions.tuteehub.com/tag/jk-521675" style="font-weight:bold;" target="_blank" title="Click to know more about JK">JK</a>"^(-1) "mol"^(-1) ) (373 K) (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>) "kJ J"^(-1))` <br/> `Delta_("vap") U^( Theta ) = 40.66 "kJ mol"^(-1) -3.10 "kJ mol"^(-1)` <br/> `=37.56 "kJ mol"^(-1)`</body></html> | |
| 49246. |
A swimmer coming out from a pool is covered a film of water weighing about 18g. How much heat must be supplied to evaporate this water at 298K ? Calculate the internal energy of vaporisation at100^(@)C. Delta_(vap) H^(@) for water at 373K = 40.66 kJ mol^(_1). |
| Answer» <html><body><p></p>Solution :The process of <a href="https://interviewquestions.tuteehub.com/tag/evaporation-16312" style="font-weight:bold;" target="_blank" title="Click to know more about EVAPORATION">EVAPORATION</a> is `: <a href="https://interviewquestions.tuteehub.com/tag/18-278913" style="font-weight:bold;" target="_blank" title="Click to know more about 18">18</a> 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>) O(l ) rarr 18 g H_(2)O(g) ` <br/> No. of moles of 18 g `H_(2) O = (18g )/(18 g mol^(-1))= 1 mol` <br/> `Delta n_(g) = 1-0 =1 mol` <br/> `:. Delta _(vap) U^(@) = V_(vap) H^(@) - Delta n_(g) RT = 40.66 k J mol^(-1) - (1 mol ) (8.314 xx <a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a>^(-3) k J K^(-1) mol^(-1) ) ( 298 K) ` <br/>`= 40.66 k J mol^(-1)- 3.10 kJ mol^(-1) = 37. 56 kJ mol^(-1)`</body></html> | |
| 49247. |
A suspension of mangnesium hydroxide in water is called ----- and is used as ----- in medicine |
| Answer» <html><body><p>Milk of <a href="https://interviewquestions.tuteehub.com/tag/lime-1073965" style="font-weight:bold;" target="_blank" title="Click to know more about LIME">LIME</a>, <a href="https://interviewquestions.tuteehub.com/tag/anticeptic-1980813" style="font-weight:bold;" target="_blank" title="Click to know more about ANTICEPTIC">ANTICEPTIC</a> <br/>Milk of magnesia, Antacid <br/>Beryllate, Antipysetic <br/><a href="https://interviewquestions.tuteehub.com/tag/magnalium-551084" style="font-weight:bold;" target="_blank" title="Click to know more about MAGNALIUM">MAGNALIUM</a>, <a href="https://interviewquestions.tuteehub.com/tag/analgesic-873849" style="font-weight:bold;" target="_blank" title="Click to know more about ANALGESIC">ANALGESIC</a> </p>Answer :<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> | |
| 49248. |
(A) surfactent molecules form micelles above the critical micelle concentration (CMC). (R) The conductance of solution of surfactant molecules decreases sharply at the (CMC). |
| 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 the correct explanation for (a). <br/>IF (a) is correct but (r) 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 (a) is incorrect but (r) is correct. </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> :B</body></html> | |
| 49249. |
Example of surface active substance A) Cholesterol , B) Alcohol ,( C) Soap |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/cholesterol-419226" style="font-weight:bold;" target="_blank" title="Click to know more about CHOLESTEROL">CHOLESTEROL</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/alcohol-853024" style="font-weight:bold;" target="_blank" title="Click to know more about ALCOHOL">ALCOHOL</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/soap-11667" style="font-weight:bold;" target="_blank" title="Click to know more about SOAP">SOAP</a> <br/>All </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> :D</body></html> | |
| 49250. |
(A) sulphate ores are concentrated by froth floation process. (R) Pine oil forms emulsion in water. |
| Answer» <html><body><p>IF 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/>If both (a) and (r) are correct but (r) is not the correct explanation for (a). <br/>IF (a) is correct but (r) 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 (a) is incorrect but (r) is correct. </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> | |