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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.
| 50701. |
A base ball of mass 200g is moving with a velocity of 30 xx 10^(2) m s^(-1). If we can locate the base ball with an error equal to the wavelength of the light used (5000 Å), how will the uncertainty in momentum be compared with the total momentum of the base ball ? |
| Answer» <html><body><p><br/></p>Solution :`m = 200//1000 = 0.2 kg, v = 30 xx 10^(2) m s^(-1), Delta x = 5000 Å = 5000 xx 10^(-10) m = <a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a> xx 10^(-7) m` <br/> `Delta x. Delta p = h//4p pi`. Calculate `<a href="https://interviewquestions.tuteehub.com/tag/deltap-2053537" style="font-weight:bold;" target="_blank" title="Click to know more about DELTAP">DELTAP</a>`. <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> `p - <a href="https://interviewquestions.tuteehub.com/tag/mv-1082193" style="font-weight:bold;" target="_blank" title="Click to know more about MV">MV</a>`. Calculate `Delta p//p`</body></html> | |
| 50702. |
A baloon is filled with hydrogen at room temperature. It will burst if pressure exceeds 0.2 bar . If at 1 bar pressure the gases occupies 0.30 L volume , upto what volume can the balloon be expanded by filling H_(2)? |
| Answer» <html><body><p></p>Solution :Here `P_(1)=1 "<a href="https://interviewquestions.tuteehub.com/tag/bar-892478" style="font-weight:bold;" target="_blank" title="Click to know more about BAR">BAR</a>" P_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>) 0.2"bar"`<br/> `V_(1)=0.30L v_(2)=?` <br/> From Boyle.s law equation: <br/> `P_(1)v_(1)=P_(2)v_(2)` <br/> `:.v_(2)=(P_(1)V_(1))/(P_(2))=(1xx0*<a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a>)/(0*2)=1*<a href="https://interviewquestions.tuteehub.com/tag/5l-326334" style="font-weight:bold;" target="_blank" title="Click to know more about 5L">5L</a>` <br/> Since the baloon bursts at 0.2 bar pressure. Here the valume of ballon should <a href="https://interviewquestions.tuteehub.com/tag/remain-1184279" style="font-weight:bold;" target="_blank" title="Click to know more about REMAIN">REMAIN</a> less than `1.5L`.</body></html> | |
| 50703. |
A balloon of diameter 21 meter weight 100 kg. Calculate its pay-load, if it is filled with He at 1.0 atm and 27°C. Density fair is 1.2 kg m^(-3) (Given : R = 0.0821 L atm K^(-1)mol^(-1)) |
| Answer» <html><body><p>4952.42 kg <br/>4932.42 kg <br/>493.242 kg <br/>none of these</p>Solution :Vol. of ballon `= 4/3 pi <a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>^ = 4851 ` litre. <br/>wt. of balloon = `10^5` gm. <br/>wt of the in balloon = `(pvm)/(RT) = 78.87 xx 10^4 gm`. <br/>Total wt of <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a> and balloon = `88.87 xx 10^4 gm` <br/>wt of <a href="https://interviewquestions.tuteehub.com/tag/air-852233" style="font-weight:bold;" target="_blank" title="Click to know more about AIR">AIR</a> <a href="https://interviewquestions.tuteehub.com/tag/displaced-440680" style="font-weight:bold;" target="_blank" title="Click to know more about DISPLACED">DISPLACED</a> = `1.2 xx 4851 = 5821.2 kg`. <br/><a href="https://interviewquestions.tuteehub.com/tag/payload-597674" style="font-weight:bold;" target="_blank" title="Click to know more about PAYLOAD">PAYLOAD</a> = `W_(("air displaced")("Balloon + gas"))` <br/>`= 5821.2 - 888.7 = 4932.42 kg .</body></html> | |
| 50704. |
A balloon is filled withn hydrogen at room temperature. It will burst, if pressure exceeds 0.2 bar. If a 1 bar pressure the gas occupied 2.27 L volume, up to what volume can the ballon be expanded ? |
| 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>>6.25 <a href="https://interviewquestions.tuteehub.com/tag/l-535906" style="font-weight:bold;" target="_blank" title="Click to know more about L">L</a><br/>11.35 L<br/>8.35 L<br/>10.50 L<br/></p>Solution :(b) <a href="https://interviewquestions.tuteehub.com/tag/according-366619" style="font-weight:bold;" target="_blank" title="Click to know more about ACCORDING">ACCORDING</a> to Boyel's <a href="https://interviewquestions.tuteehub.com/tag/law-184" style="font-weight:bold;" target="_blank" title="Click to know more about LAW">LAW</a>,`p_(1)V_(1)=p_(2)V_(2)` <br/> `V_(2)=(p_(1)V_(1))/(p_(2))=(1 "<a href="https://interviewquestions.tuteehub.com/tag/bar-892478" style="font-weight:bold;" target="_blank" title="Click to know more about BAR">BAR</a>"xx2.27 L)/(0.02"bar")=11.35 L`</body></html> | |
| 50705. |
A balloon is filled with hydrogen gas at room temperature. It will burst if pressure exceeds 0.2 bar. If at1 bar pressure the gas occupies 2.27L volume, upto what volume can the balloon be expanded? |
| 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>Solution :`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>)V_(1)=P_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)V_(2),P_(1)=1` <a href="https://interviewquestions.tuteehub.com/tag/bar-892478" style="font-weight:bold;" target="_blank" title="Click to know more about BAR">BAR</a> `V_(1)=2.27L,P_(2)=0.2` bar `V_(2)=? V_(2)=(P_(1)V_(1))/(P_(2))=(1xx2.27)/0.2=11.35L`</body></html> | |
| 50706. |
A balloon is filled with one mole of helium at 0^@C and 1 bar pressure. It will burst if pressure is decreased to 0.2 bar. What is the maximum volume of balloon? |
| Answer» <html><body><p></p>Solution :At `<a href="https://interviewquestions.tuteehub.com/tag/0-251616" style="font-weight:bold;" target="_blank" title="Click to know more about 0">0</a>^@ C` and 1 <a href="https://interviewquestions.tuteehub.com/tag/bar-892478" style="font-weight:bold;" target="_blank" title="Click to know more about BAR">BAR</a>, <a href="https://interviewquestions.tuteehub.com/tag/gmv-468789" style="font-weight:bold;" target="_blank" title="Click to know more about GMV">GMV</a> = 22.7L <br/> Boyle.s law is given as, `P_1V_1= P_2 V_2 ` <br/> `P_1 = 1"bar"V_1= 22.7L` <br/> `P_2= 0.2" bar" V_2 =?` <br/> The <a href="https://interviewquestions.tuteehub.com/tag/maximum-556915" style="font-weight:bold;" target="_blank" title="Click to know more about MAXIMUM">MAXIMUM</a> volume of <a href="https://interviewquestions.tuteehub.com/tag/balloon-392886" style="font-weight:bold;" target="_blank" title="Click to know more about BALLOON">BALLOON</a> =<br/> `V_2=(P_1 V_1)/(P_2) = ( 1 x 22.7 )/( 0.2 ) = 113.54 L`</body></html> | |
| 50707. |
A balloon is filled with hydrogen at room temperature. It will burst if pressure exceeds 0.2bar. If at 1bar pressure the gas occupies 2.27 L volume, upto what volume can the ballon be expanded? |
| 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> :According to Boyle.s <a href="https://interviewquestions.tuteehub.com/tag/law-184" style="font-weight:bold;" target="_blank" title="Click to know more about LAW">LAW</a> `p_1V_1 = p_2 V_2` <br/> If `p_1` is 1 <a href="https://interviewquestions.tuteehub.com/tag/bar-892478" style="font-weight:bold;" target="_blank" title="Click to know more about BAR">BAR</a>, `V_1` is 2.27L <br/> If `p_2` = 0.2 bar, then `V_2 = p_1V_1/p_2 = V_2 = <a href="https://interviewquestions.tuteehub.com/tag/1bar-282929" style="font-weight:bold;" target="_blank" title="Click to know more about 1BAR">1BAR</a> xx 2.27L/0.2bar = 11.35 L`<br/> <a href="https://interviewquestions.tuteehub.com/tag/since-644476" style="font-weight:bold;" target="_blank" title="Click to know more about SINCE">SINCE</a> balloon bursts at 0.2 bar pressure, the volume of balloon should be lass than 11.35L</body></html> | |
| 50708. |
A balloon is filled with hydrogen at room temperature. It will burst if pressure exceeds 0.2 bar. If at 1 bar pressure the gas occupies 2.27 L volume,upto what volume can the balloon be expanded ? |
| 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>Solution :At <a href="https://interviewquestions.tuteehub.com/tag/pressure-1164240" style="font-weight:bold;" target="_blank" title="Click to know more about PRESSURE">PRESSURE</a> `P_(1)`=1 bar,volume `V_(1)`=2.27 L <br/> Atpressure `P_(2)=0.2` bar, volume `V_(2)`=To be <a href="https://interviewquestions.tuteehub.com/tag/calculated-907694" style="font-weight:bold;" target="_blank" title="Click to know more about CALCULATED">CALCULATED</a> <br/> As temperature remains constants at room temperature, applying Boyle's law, `P_(1)V_(1)=P_(2)V_(2)` <br/> (1 bar)(2.27 L)=(0.2 bar)`V_(2)`or`V_(2)=(2.27)/(0.2)L=11.35L` <br/> Thus, the balloon can be <a href="https://interviewquestions.tuteehub.com/tag/expanded-2076021" style="font-weight:bold;" target="_blank" title="Click to know more about EXPANDED">EXPANDED</a> upto 11.35 L. Beyond this volume it will burst.</body></html> | |
| 50709. |
A balloon is filled with hydrogen at room temperature. It will burst if pressure exceeds 0.2 bar. If at 1 bar pressure the gas occupies 2.27 L volume, upto what volume can be balloon be expanded ? |
| Answer» <html><body><p></p>Solution :Expansion of gas in balloonb mass (n) and temperature (T) remains constant. So Boyle.s low uses.<br/>Asccording to Boyle.s law, `p_(1)V_(1)=p_(2)V_(2)`<br/>where `p_(1)=` Initial <a href="https://interviewquestions.tuteehub.com/tag/pressure-1164240" style="font-weight:bold;" target="_blank" title="Click to know more about PRESSURE">PRESSURE</a> = 1 <a href="https://interviewquestions.tuteehub.com/tag/bar-892478" style="font-weight:bold;" target="_blank" title="Click to know more about BAR">BAR</a><br/>`V_(1)=` Initial volume = 2.7 L<br/>`p_(2)=` Final Pressure<br/>= Initial pressure + Increase in pressure<br/>= 1 bar + 0.2 bar = 1.2 bar<br/>`V_(2)=` Final volume (when it will burst)<br/>`therefore V_(2) = (p_(1)V_(1))/(p_(2))=(("1 bar")(2.7 L))/("1.2 bar")=11.35 L`<br/>It pressure <a href="https://interviewquestions.tuteehub.com/tag/increases-1040626" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASES">INCREASES</a> at 0.2 bar it will burst so its volume is less than 11.35 <a href="https://interviewquestions.tuteehub.com/tag/lit-537267" style="font-weight:bold;" target="_blank" title="Click to know more about LIT">LIT</a>.</body></html> | |
| 50710. |
A balloon filled with acetylene is kept in a vessel of hydrogen at the same temperature and pressure. If the balloon is punctured with a pin, it |
| Answer» <html><body><p>collapses <br/><a href="https://interviewquestions.tuteehub.com/tag/bursts-905751" style="font-weight:bold;" target="_blank" title="Click to know more about BURSTS">BURSTS</a> <br/>nothing happens <br/>becomes red <br/></p>Solution :`gamma_(H_2) > gamma_("acetylene") implies` <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a> enters <a href="https://interviewquestions.tuteehub.com/tag/ballons-891906" style="font-weight:bold;" target="_blank" title="Click to know more about BALLONS">BALLONS</a> <a href="https://interviewquestions.tuteehub.com/tag/faster-985028" style="font-weight:bold;" target="_blank" title="Click to know more about FASTER">FASTER</a> than it leaves `implies `bursts.</body></html> | |
| 50711. |
A balloon blown up has a volume of 500 mL at 5^@C. The balloon is distended to 7/8th of its maximum capacity.Calculate the minimum temperature above which it will burst. |
| 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> :`44.7^@<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> | |
| 50712. |
A + B rarr C+D, Delta H = -10,000 J mol^(-1) , Delta S = - 33.3 J mol^(-1) K^(-1) (i) At what temperature the reaction will occur spontaneously from leftto right ? (ii) At what temperature , the reaction will reverse? |
| Answer» <html><body><p></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> G = DeltaH -T DeltaS` <br/> At <a href="https://interviewquestions.tuteehub.com/tag/equilibrium-974342" style="font-weight:bold;" target="_blank" title="Click to know more about EQUILIBRIUM">EQUILIBRIUM</a> , `Delta G =0` so that `Delta H = T Delta S` or `T = (DeltaH)/(DeltaS) = (- 10000J mol^(-1))/( - 33.3JK^(-1)mol^(-1))= 300.3K` <br/>(i) For spontaneity from left to right, `Delta G` should be -ve for the <a href="https://interviewquestions.tuteehub.com/tag/given-473447" style="font-weight:bold;" target="_blank" title="Click to know more about GIVEN">GIVEN</a> <a href="https://interviewquestions.tuteehub.com/tag/reaction-22747" style="font-weight:bold;" target="_blank" title="Click to know more about REACTION">REACTION</a>. This willbe so if `T lt 300.3K` ( becasue `Delta H` and `Delta S` both are -ve ) <br/> (ii) For reverse reaction to occur, `Delta G` shouldbe `+` be for forward reaction. This will be so if `Tgt300.3` <a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a>.</body></html> | |
| 50713. |
A+B hArr C+D is 100. If intially the concentrations of A and B are equal but at equilibrium concentration of D will be twicethatof A, then whatwill be the equilibrium constantof the reaction ? |
| Answer» <html><body><p>`4//9`<br/>`0*18`<br/>`0*17`<br/>`0*11`</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,+,B,hArr,<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,),(" Intial",a,,a,,,,),(" At eqm",(a-x),,(a-x),,x,,x):}` <br/> But we are given that `x= <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-x)`<br/>or` 3 x = 2 a or a=3/2x = 1.5 x ` <br/> ` :. K= (x xx x)/(a-x^(2))= x^(2)/(1.5 x - x)^(2) = x^(2)/(0.25 x^(2))=4`</body></html> | |
| 50714. |
A+B Compound (A) and (B) can be differentiated by : |
| Answer» <html><body><p>2- 4 -DNP<br/>Fehling solution<br/>Lucas <a href="https://interviewquestions.tuteehub.com/tag/reagent-1178480" style="font-weight:bold;" target="_blank" title="Click to know more about REAGENT">REAGENT</a><br/>`NaHSO_(3)`</p>Solution :A= `CH_(3)-CH_(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>` obtained by <a href="https://interviewquestions.tuteehub.com/tag/hydrolysis-1034318" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROLYSIS">HYDROLYSIS</a> of ether.<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>= `CH_(3)-overset(O)overset(||)C-CH_(3)obtained by hydrolysis of ehter. Fehling is used to differentiate aldehyde and <a href="https://interviewquestions.tuteehub.com/tag/ketone-1063494" style="font-weight:bold;" target="_blank" title="Click to know more about KETONE">KETONE</a>.</body></html> | |
| 50715. |
a. b. c. Tetrachloroethane does not give the test for unsaturateion , i.e., it does not decolourise Br_(2) water solution. Explain why. d. e. Ricinoleic acid is isolated from castor oil. The structure of the compound is : f.Explain why 1,2-dimethyl cyclopenten or 1,2-dimethyl cyclohexen with HBr undergoes anti-( or trans-) addition but with aqueous acid undergoes both anti- and syn-( trans and cis-) additions. |
| Answer» <html><body><p></p>Solution :`a.`<img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S01.png" width="80%"/> <br/>`b.` <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S02.png" width="80%"/> <br/> There are four chiral centrest centres and each of them shows various enentiomers also. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S03.png" width="80%"/> <br/>`(F), (G)` and `(H)` have four chiral centres , but `(I)` has only three chiral centres and each of them will show various enantiomers also. <br/> `c.` <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S04.png" width="80%"/> <br/> Because of the `-I` effect of four `Cl` atoms `(i.e.,` electron withdrawing nature of chlorine `)` , the electron density at the double bond is greatly reduced and an attack by electrophilic bromin `(Br^(o+))` does not occur. Hence, it does not show the test for unsaturation. <br/> `d.` <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S05.png" width="80%"/> <br/> `e.` There is <a href="https://interviewquestions.tuteehub.com/tag/one-585732" style="font-weight:bold;" target="_blank" title="Click to know more about ONE">ONE</a> `(C=C)` bond with different groups on each `(C=C)` bond and one chiral centre at `C=12` . It shows four geometrical land <a href="https://interviewquestions.tuteehub.com/tag/optical-583872" style="font-weight:bold;" target="_blank" title="Click to know more about OPTICAL">OPTICAL</a> isomers. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S06.png" width="80%"/> <br/> `f.` In non`-` <a href="https://interviewquestions.tuteehub.com/tag/polar-1157435" style="font-weight:bold;" target="_blank" title="Click to know more about POLAR">POLAR</a> solvents, the reaction proceeds through a briged cation such as brominimum ion and then `Br^(c-)` attacks the protonated complex from the opposite face resulting in trans `(` anti`-` addition `)`. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S07.png" width="80%"/> <br/> In the <a href="https://interviewquestions.tuteehub.com/tag/presence-25557" style="font-weight:bold;" target="_blank" title="Click to know more about PRESENCE">PRESENCE</a> of aqueous acid, since `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` is a good ion sovator, the protonated complex to the free `R^(o+)` that can now react with `Br^(c-)` from either face giving both syn`-` and anti `-` addition.<br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S08.png" width="80%"/> <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_ORG_P1_C07_S01_099_S09.png" width="80%"/></body></html> | |
| 50716. |
A,B,C and D are four different gases with critical temperature 304.1,154.3,405.5 and 126.0K respectively. While cooling the gas which gets liquified first is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> <br/>A <br/>D <br/><a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a> </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> | |
| 50717. |
A, B and C are three elements forming part of a compound in oxidation states of +2, +5 and -2 respectively. What could be the compound? |
| Answer» <html><body><p>`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>)(<a href="https://interviewquestions.tuteehub.com/tag/bc-389540" style="font-weight:bold;" target="_blank" title="Click to know more about BC">BC</a>)_(2)`<br/>`A_(2)(BC_(<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/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</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> )`<br/>`A_(3)(BC_(4))_(2)`<br/>ABC</p>Answer :C</body></html> | |
| 50718. |
A ,Band Care elementsin thethirdshortperiod. Oxideof A isionicthat of Bis amphotericand thatof (C )is agiantmolecule . A,Band C will haveatomicnumbers in theorder |
| Answer» <html><body><p>`A <a href="https://interviewquestions.tuteehub.com/tag/lt-537906" style="font-weight:bold;" target="_blank" title="Click to know more about LT">LT</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> lt <a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a> `<br/>`C lt B lt A `<br/>` A lt C lt B`<br/>`B lt A lt C`</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/na-572417" style="font-weight:bold;" target="_blank" title="Click to know more about NA">NA</a></body></html> | |
| 50719. |
A, B and C are atoms of elements with atomic number Z, Z+1 and Z+2 respectively. If 'B' has octet configuration, the bond formed between 'A' and C predominently is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/covalent-427060" style="font-weight:bold;" target="_blank" title="Click to know more about COVALENT">COVALENT</a> bond <br/>Ionic bond <br/>Dative bond <br/><a href="https://interviewquestions.tuteehub.com/tag/hydrogen-22331" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROGEN">HYDROGEN</a> bond </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> | |
| 50720. |
(A) : Average oxidation number of chlorine in bleaching powder is zero. (R) : Oxidation number of chlorine is always zero. |
| 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> <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 but 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 :C</body></html> | |
| 50721. |
(a) Assign orientation to the three chlorotoluenes with mu = 1.3, 1.78 and 1.9 D (b) Assign orientation to the three cholornitrobenzenes with mu = 2.5, 3.4 and 4.3 D (c ) Which has higher mu . |
| 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> :`mu` of (I) <a href="https://interviewquestions.tuteehub.com/tag/gt-1013864" style="font-weight:bold;" target="_blank" title="Click to know more about GT">GT</a> (III) (i) Bromobenzene (II) is resonance stabillised due to delocalisation of `lp e^(-')s` of the Br <a href="https://interviewquestions.tuteehub.com/tag/atom-887280" style="font-weight:bold;" target="_blank" title="Click to know more about ATOM">ATOM</a> in the benzene ring The `(C -B)` bond acquires some double bond character, while in (I) is a single bond, since it does not undergo resonance In other words, the `(C -Br)` bond in (II) is shorter than that in <br/> (ii) Due to more s-character `sp^(2)` hybridised `C` is more `EN` `sp^(3)` hybrid `C` atom, therefore the `sp^(2)` hybrid `C` of the `(C -Br)` bond in (II) has less tendency `C` atom of (I) As a <a href="https://interviewquestions.tuteehub.com/tag/result-1187343" style="font-weight:bold;" target="_blank" title="Click to know more about RESULT">RESULT</a>, the `(C -Br)` bond in (I) is more polar than in (II) i e the magnitude of negative charge (`delta`-) is more on Br atom of (I) than in (II) Therefore `mu` of `(I) gt (II)` [since `mu = q xx d` (charge `xx` distance)] <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_INORG_CHM_P1_C02_S01_024_S01.png" width="80%"/><br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_INORG_CHM_P1_C02_S01_024_S02.png" width="80%"/><br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KSV_INORG_CHM_P1_C02_S01_024_S03.png" width="80%"/></body></html> | |
| 50722. |
(A) At 27^(@)C, the kinetic energy of 8 gram of methane is equal to the kinetic energy of 16 gram of oxygen (R) The total heat change in a reaction is the same whether the chemical reaction takes place in one single step or in several steps |
| 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> of A<br/>If both A and R are correct but R is not the correct explanation of A<br/>If A is correct but R is incorrect<br/>If A is incorrect but R is correct</p>Answer :B</body></html> | |
| 50723. |
Assertion:As_2O_3 and Sb_2O_3 are amphoteric in nature Reason : As and Sb are metalliods |
| 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 <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> | |
| 50724. |
(a) Arrrange A,B,C and D in order of incresing electrode potential in the electrochemical series if (i) A+B^(+)rarrA^(+)+B,(ii) B +D^(+) rarr B^(+)+D (iii) B+C^(+)rarrB^(+)+C,(iv) C^(+)+Drarr NO reaction (b) on the basisof the above data predict which of the following reaction will ocur (i) A+C^(+) rarrA^(+)+C, (ii) A^(+)+D rarrA+D^(+) |
| Answer» <html><body><p></p>Solution :(a) In the electrochemical <a href="https://interviewquestions.tuteehub.com/tag/series-1201802" style="font-weight:bold;" target="_blank" title="Click to know more about SERIES">SERIES</a> the atoms or species arearranged in <a href="https://interviewquestions.tuteehub.com/tag/order-1138220" style="font-weight:bold;" target="_blank" title="Click to know more about ORDER">ORDER</a> of their decreasing electrode potential <br/> (i) since B is reduced by A therefore B has higher electrode potential than A <br/> (ii) since D is reduced by B therefore D has higher electrode potential than B <br/> (iii) Since <a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a> is reduced by B therefore C has higher electrode potential than B<br/> (iv) since there is not reaction between `C^(+)` and D i.e C is not reduced by D therefore elecrode potential of the four <a href="https://interviewquestions.tuteehub.com/tag/elements-969381" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENTS">ELEMENTS</a> decrease in the order `D gt C gt B gt A`<br/> (b) (i) since electrode potential of C is higher than that of A therefore `C^(+)` can be easily reduced by A reacton (i) will occur <br/> (ii) since electrode potential of D is higher than that of A therefore `A^(+)` cannot be reduced of by D i.e reaction (ii) wil not occur</body></html> | |
| 50725. |
(A): Aqueous solution of Na_(2)CO_(3) is acidic in nature (R): Na^(+) ion undergoes hydrolysis to produce NaOH and H^(+) ions |
| 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, 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/>Both A and R are false</p>Answer :D</body></html> | |
| 50726. |
A aqueous solution of substance on electrolysis gives ethane. The substance is |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/acetic-1967065" style="font-weight:bold;" target="_blank" title="Click to know more about ACETIC">ACETIC</a> acid<br/>Acetamide<br/>Potassium acetate<br/>Ethyl acetate</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> | |
| 50727. |
(A): Aq. Na_(2)CO_(32) solution is more basic than that of aq. NaHCO_(3). (R): The extent of hydrolysis of Na_(2)CO_(3) is less than that of NaHCO_(3) |
| 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 correct and R is the correct explanation of A.<br/>Both A and R are correct but R is not the correct explanation of A.<br/>A is <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> but R is False<br/>R is True but A is False.</p>Answer :C</body></html> | |
| 50728. |
(A) Angular momentum of 1s,2s,3s, etc., all have spherical shape. (R) 1s,2s,3s, etc. all hae spherical shape. |
| 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> :<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> | |
| 50729. |
a and b are van der Waals' constants for gases. Chlorine is more easily liquefied than ethane because |
| Answer» <html><body><p>`a " andbfor " Cl_2 <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 " <a href="https://interviewquestions.tuteehub.com/tag/andb-874946" style="font-weight:bold;" target="_blank" title="Click to know more about ANDB">ANDB</a> for " C_2 H_6`<br/>`a " andbfor " Cl_2 <a href="https://interviewquestions.tuteehub.com/tag/lt-537906" style="font-weight:bold;" target="_blank" title="Click to know more about LT">LT</a> a " andb for " C_2 H_6`<br/>`a " for " Cl_2 lt a " for " C_2 H_6 " but <a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> for " Cl_2 gt " b for " C_2 H_6`<br/>`a " for " Cl_2 gt a " for " C_2 H_6 " but b for " Cl_2 lt " b for " C_2 H_6`.</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 " for " Cl_2 gt a " for " C_2 H_6 " but b for " Cl_2 lt " b for " C_2 H_6`.</body></html> | |
| 50730. |
a' and 'b' are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because |
| Answer» <html><body><p>a and b for `Cl_(2) lt a` and b for `C_(2)H_(6)`<br/>a for `Cl_(2) lt a ` for `C_(2)H_(6)` but b for `Cl_(2) gt b` for `C_(2)H_(6)`<br/>a for `Cl_(2) gt a` for `C_(2)H_(6)` but b for `Cl_(2) lt b` for `C_(2)H_(6)`<br/>a and b for `Cl_(2) gt a` and b for `C_(2)H_(6)`</p>Solution :a' is directly related to the intermolecular forces of attraction and hence to the <a href="https://interviewquestions.tuteehub.com/tag/ease-964504" style="font-weight:bold;" target="_blank" title="Click to know more about EASE">EASE</a> of <a href="https://interviewquestions.tuteehub.com/tag/liquefaction-1075117" style="font-weight:bold;" target="_blank" title="Click to know more about LIQUEFACTION">LIQUEFACTION</a> of the gas and 'b' is a <a href="https://interviewquestions.tuteehub.com/tag/measure-1091857" style="font-weight:bold;" target="_blank" title="Click to know more about MEASURE">MEASURE</a> of the size of the molecules and hence inversely related to the ease of liquefaction. As `Cl_(2)` is more easily liquefied than `C_(2)H_(6)`, a for `Cl_(2) gt a` for`C_(2)H_(6)` but b for `Cl_(2) lt b` for `C_(6)H_(6)`.</body></html> | |
| 50731. |
A and B are two element which form AB_(2) and A_(2)B_(3). If 0.18 mol of AB_(2) weighs 10.6g and 0.18 mol of A_(2)B_(3) weighs 17.8g then - |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/atomic-2477" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMIC">ATOMIC</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 A is 20.05<br/>atomic mass of <a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> is 20.05<br/>atomic mass of A is 18.8<br/>atomic mass of B is 18.8</p>Answer :A::D</body></html> | |
| 50732. |
'A' and 'B' are compounds of sodium. 'A' is thermally stable. On passing CO_(2) through the solution of 'A', 'B' is formed. 'B' on heating gives 'A'. Phenolphthalein is added to the aqueous solution of 'A' and 'B'. The colours of solutions are |
| Answer» <html><body><p>Colouress, <a href="https://interviewquestions.tuteehub.com/tag/colourless-422296" style="font-weight:bold;" target="_blank" title="Click to know more about COLOURLESS">COLOURLESS</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/pink-1154784" style="font-weight:bold;" target="_blank" title="Click to know more about PINK">PINK</a>, Colourless <br/>Colourless, Pink <br/>Pink, pink </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> | |
| 50733. |
A and B are ideal gases. The molecular weights of A and B are in the ratio of 1 : 4. The pressure of a gas mixture containing equal weights of A and B is P atm. What is the partial pressure (in atm) of B in the mixture? |
| Answer» <html><body><p>P/5<br/>P/2<br/>P/2.5<br/>3P/4</p>Answer :D</body></html> | |
| 50734. |
A and B are : |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/meso-1094265" style="font-weight:bold;" target="_blank" title="Click to know more about MESO">MESO</a> <a href="https://interviewquestions.tuteehub.com/tag/copounds-2544417" style="font-weight:bold;" target="_blank" title="Click to know more about COPOUNDS">COPOUNDS</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/diastereoisomers-2056569" style="font-weight:bold;" target="_blank" title="Click to know more about DIASTEREOISOMERS">DIASTEREOISOMERS</a><br/>enantiomers<br/>both (a) and (<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>)</p>Solution :<img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/GRB_ORG_CHM_V02_QB_C03_E01_055_S01.png" width="80%"/> <br/> Thus A and B are diastereoisomers.</body></html> | |
| 50735. |
(a) An organic compond A of a moleculer formula C_(3)H_(6), reacts with HBr to give B which is the major product forthis raction. A again reacts with HBr in presence of benzoyl peroxide to give C. Indentify A,B and C. Explain the reactions. |
| 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) <a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>. `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=CH_(2)+HBr to underset("2-Bromopropene")(CH_(3)-underset(Br)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>)H-CH_(3))` <br/> 2. `underset("Propene (A)")(CH_(3)-CH=CH_(2))+HBr overset((C_(6)H_(5)CO)_(2)O)to underset("1-Bromopropene (C)")(CH_(3)-CH_(2)-CH_(2)Br)` <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/FM_CHE_XI_SP_03_E01_042_S01.png" width="80%"/></body></html> | |
| 50736. |
(a) An endothermicreaction A rarr B proceeds to completion . Predict the sign of DeltaS. (b) What will be the sign of DeltaS for the reaction : N_(2)(g) + O_(2)(g) rarr 2NO(g) ? Given reasons in support of your answer. |
| 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> :(a)Sinceit is <a href="https://interviewquestions.tuteehub.com/tag/feasible-456850" style="font-weight:bold;" target="_blank" title="Click to know more about FEASIBLE">FEASIBLE</a> , so `DeltaG` is-ve. As it is <a href="https://interviewquestions.tuteehub.com/tag/endothermic-451233" style="font-weight:bold;" target="_blank" title="Click to know more about ENDOTHERMIC">ENDOTHERMIC</a> `DeltaH ` is `+ve`.Hence for `DeltaG`to be `-ve, DeltaS` must be`+ve` . (<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>) `DeltaS`is `-ve` because there are two different <a href="https://interviewquestions.tuteehub.com/tag/reactant-1178091" style="font-weight:bold;" target="_blank" title="Click to know more about REACTANT">REACTANT</a> while there is only one product.</body></html> | |
| 50737. |
(A) : Among IIIA group elements, Boron has highest melting point (R) : Boron has gaint polymeric structure |
| Answer» <html><body><p>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>, R explains 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> | |
| 50738. |
(A): Among Ca^(2+) and Zn^(2+) ions, Ca^(2+) is more stable than Zn^(2+) (R) : Both Ca^(2+) and Zn^(2+) ions are diamagnetic |
| Answer» <html><body><p>Both (A) and (R) arc <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 <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> | |
| 50739. |
(A): Although phosphorous exhibits +3 and +5 oxidation states, it cannot form PH_5.(R): High Delta Hvalue of dihydrogen do not favour to exhibit the highest oxidation state of phosphorous. The correct answer is |
| 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 to A. <br/> Both A and R are true and R is not the correct explanation to A. <br/> A is correct, R is <a href="https://interviewquestions.tuteehub.com/tag/wrong-1462035" style="font-weight:bold;" target="_blank" title="Click to know more about WRONG">WRONG</a><br/> A is wrong, R is correct</p>Answer :A</body></html> | |
| 50740. |
(A) All compounds containing an odd number of nitrogen atoms have odd masses and those which contain even number of nitrogen atoms have even masses. (R) Nitrogen rule can be applied to both aliphatic and aromatic compounds. |
| Answer» <html><body><p>If both assertion and reason 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 incorrect <br/>If assertion is incorrect but reason 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 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> | |
| 50741. |
(A): Alkenes, carbonyl compounds can exhibit electromeric effect but not alkanes, saturated alcohols (R ): Electromeric effect is possible organic compounds having at least one multiple bond |
| Answer» <html><body><p>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 explains A<br/>A and R are true, R does not explain 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/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 50742. |
(A) : Alkene is more reactive than the corresponding alkane (R ) : Alkenes contain carbon-carbon double 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> | |
| 50743. |
A alkayl halide with molecular formula C_(6)H_(13)Br on dehydrohalogenation gave two isomeric alkenes X and Y with molecular formula C_(6)H_(12). On reductive ozonolysis, X and Y gave four compounds CH_(3)COCH_(3), CH_(3)CHO, CH_(3)CH_(2)CHO and (CH_(3))_(2) CHCHO. Find the alkyl halide. |
| Answer» <html><body><p></p>Solution :(i) `C_(6)H_(13)<a href="https://interviewquestions.tuteehub.com/tag/br-390993" style="font-weight:bold;" target="_blank" title="Click to know more about BR">BR</a>` is a 3-Bromo-4 <a href="https://interviewquestions.tuteehub.com/tag/methylpentane-2830870" style="font-weight:bold;" target="_blank" title="Click to know more about METHYLPENTANE">METHYLPENTANE</a>.`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>(underset(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>)- underset(underset(H)(|))overset(overset(Br)(|))(C) - CH_(2) - CH_(3)`<br/> (ii) 3-Bromo-4 methylpentane on dehydrogenation <a href="https://interviewquestions.tuteehub.com/tag/give-468520" style="font-weight:bold;" target="_blank" title="Click to know more about GIVE">GIVE</a> two isomers X and Y as follows: <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/FM_CHE_XI_SP_08_E01_032_S01.png" width="80%"/> <br/> Therefore `C_(6)H_(13)Br` is 3-Bromo-4- methylpentane.</body></html> | |
| 50744. |
(A) : Alkali metals are very soft and they can be cut with knife (R) : Alkali metals have weak interatomicforces |
| 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/correct-409949" style="font-weight:bold;" target="_blank" title="Click to know more about CORRECT">CORRECT</a> and R is the correct explanation of A .<br/> Both A and R are correct but R is not the correct explanation of A.<br/> A is <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> but R is False <br/>R is True but A is False .</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> | |
| 50745. |
(A): Alkali metals are not soft and have low melting and boiling points (R): This is because interatomic bonds are weak |
| 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/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> of A.<br/>Both A and R are correct but R is not the correct explanation of A.<br/>A is <a href="https://interviewquestions.tuteehub.com/tag/true-713260" style="font-weight:bold;" target="_blank" title="Click to know more about TRUE">TRUE</a> but R is False<br/>R is True but A is False.</p>Answer :D</body></html> | |
| 50746. |
(A) : Alkali metals are good reducing agents (R) : Alkali metals possess high oxidation potentials |
| 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, 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</body></html> | |
| 50747. |
(A) Acid rains have been reported in some places which are far away from the places where industries are located (B) (R) : Rain coluds move away from industries. |
| 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><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> | |
| 50748. |
(A) : Acetylene is used in oxyacetylene flame (R ) : The heat of combustion of acetylene is more than that of ethane or ethylene |
| Answer» <html><body><p>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 <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 explain 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> | |
| 50749. |
(A) : Acetylene reacts with ammonical cuprous chloride to form red precipitate (R ) : Hydrogen atom bonded to sp hybridised carbon atom is acidic in nature. |
| Answer» <html><body><p>A and R are true, 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 <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> | |
| 50750. |
(a) Account for the acidity of alkynes. (b) Explain the mechanism of sulphonation of benzene. ( c ) How will you convert the following : (i) Ethyne to but-2-yne(ii) Propeneto 2, 3-dimethylbutane(iii) Etheneto ethyne. |
| Answer» <html><body><p></p>Solution :( c ) (i)`underset("Ethyne")(HC-=CH)overset(2NaNH_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>))toNaC-=CNa overset(2CH_(3)Br)toCH_(3)underset("But-2-yne")(C-="CCH"(3))` <br/> (ii) `underset("Propene")(CH_(3)CH=)CH_(2)overset(HBr)toCH_(3)underset(Br)underset(|)(C)HCH_(3)overset("Na, <a href="https://interviewquestions.tuteehub.com/tag/ether-975855" style="font-weight:bold;" target="_blank" title="Click to know more about ETHER">ETHER</a>")underset("<a href="https://interviewquestions.tuteehub.com/tag/wurtz-3287156" style="font-weight:bold;" target="_blank" title="Click to know more about WURTZ">WURTZ</a> <a href="https://interviewquestions.tuteehub.com/tag/reaction-22747" style="font-weight:bold;" target="_blank" title="Click to know more about REACTION">REACTION</a>")to underset("2,3-Dimethyl butane")(CH_(3)underset(CH_(3))underset(|)(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>-underset(CH_(3))underset(|)(C)H-CH_(3))` <br/> (iii) `underset("Ethene")(CH_(2)=CH_(2))overset(Br_(2),"CCl"_(4))tounderset(Br)underset(|)(C)H_(2)-underset(Br)underset(|)(C)H_(2)overset("2 alc. KOH")tounderset("Ethyne")(HC-=CH)`</body></html> | |