InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An organic compound (P) with molecular formula `C_(6)H_(8)O_(4)` is stable to heat but hydrolyse to (Q) and MeOH by NaOH follwed by acidification. (Q) on strong heating gives (R) which with Red P/HI gives ethane. Compound (P) is:A. `CH_(3)-underset(O)underset(||)(C)-O-underset(O)underset(||)(C)-OC_(2)H_(5)`B. `CH_(3)-underset(O)underset(||)(C)-underset(O)underset(||)(C)-underset(O)underset(||)(C)-OCH_(3)`C. D. |
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Answer» Correct Answer - C (P) on hydrolysis gives propanedioic aci and methanol. Propanedioic acid on strong heating gives acetic acid which when reduced with Red P/HI gives ethane. |
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| 2. |
Compound X gives smallest acid & smallest `2^(@)` amine on hydrolysis. What is the molecular weight of compound X ? |
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Answer» Correct Answer - 73 `H-underset(O)underset(||)(C)-overset(CH_(3))overset(|)(N)-CH_(3)` m.w. is 73 |
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| 3. |
The end product of following reaction is/are: `Ph-C-=C-Ph underset((1))overset(H_(2)//Pd//BaSO_(4)//"Quinoline")rarr underset((2))overset(D_(2)//Ni)rarr`A. `Ph-CH_(2)-CD_(2)-Ph`B. C. D. |
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Answer» Correct Answer - B::C `Ph-C-=C-Ph underset((1))overset(H_(2)//Pd//BaSO_(4)//"Quinoline")rarr underset("trans")(Ph-CH=CH-Ph)underset((2))overset(D_(2)//Ni)rarr underset("meso")(Ph-CHD-CHD-Ph)` |
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| 4. |
Which of the following gives `CH_(3)-OH` and `CH_(3)-overset(O)overset(||)(C)-CH_(3)` on hydrolysis with `H_(3)O^(+)`.A. B. C. D. `CH_(3)-O-CH_(2)-CH_(2)-CH_(2)-CH_(3)` |
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Answer» Correct Answer - C Only C on hydrolysis gives `CH_(3)-OH` and `CH_(3)-overset(O)overset(||)(C)-CH_(3)`. |
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| 5. |
Identify a reagent from the following list which can easily distinguish between 1- butyne and 2-butyne.A. bromine, `C Cl_(4)`B. `H_(2)` Lindlar catalystC. dilute `H_(2)SO_(4), HgSO_(4)`D. ammonical `Cu_(2)Cl_(2)` solution |
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Answer» Correct Answer - D `CH_(3)-CH_(2)-C-=CH underset(NH_(4)OH)overset(Cu_(2)Cl_(2))rarr underset("Blood red colour")(CH_(3)-CH_(2)-C-=overset(Θ)Cu^(o+))+NH_(4)Cl+H_(2)O` |
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| 6. |
Periodic acid is generally used for the oxidation of vicinal diols or `alpha`-hydrocarboxyl compounds. Which of the following statements are correct for this reactionA. oxidative cleavage takes place in the above reactionsB. final products are generally carbonyl compounds or corboxylic acidsC. `HIO_(4)` reduced into `HIO_(3)`D. Intermediate of this reaction for a vicinal diol is |
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Answer» Correct Answer - A::B::C::D `HIO_(4)` is a mild oxidising agent. Cyclic intermediate is formed with vicinal diols. |
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| 7. |
Which of the following can not be obtained when alkenes are oxidised with `KMnO_(4)` and then followed by acid hydrolysis ?A. alkanoic acidsB. alkanalsC. alkanonesD. carbon dioxide |
| Answer» Correct Answer - B | |
| 8. |
1-Propanol and 2-Propanol can be best distinguished by :A. oxidation with alkaline `KMnO_(4)` followed by reaction with Fehling solutionB. oxidation with acidic dichromate followed by reaction with Fehling solutionC. oxidation by heating with copper followed by reaction with Fehling solutionD. oxidation with concentrated `H_(2)SO_(4)` followed by reaction with Fehling solution |
| Answer» Correct Answer - C | |
| 9. |
Which of the following reagents converts both acetaldehyde and acetone to alkanes?A. `Ni//H_(2)`B. `LiAlH_(4)`C. `I_(2)//NaOH`D. Zn-hg/conc.HCl |
| Answer» Correct Answer - D | |
| 10. |
Hydrogenation of benzoyl chloride in the presence of `Pd//BaSO_(4)` givesA. benzyl alcoholB. benzaldehydeC. benzoic acidD. phenol |
| Answer» Correct Answer - B | |
| 11. |
The best reagent to convert pent-2-en-2-ol into pen-2-ene-2-one isA. Pyridinium chloro-chromateB. Chromic anhydride in galcial acetic acidC. Acidic dichromateD. Acidic permanganate |
| Answer» Correct Answer - A | |
| 12. |
Acetone will be obtained on ozonolysis ofA. 1-penteneB. 2-penteneC. 1-isopenteneD. 2-pentyne |
| Answer» Correct Answer - C | |
| 13. |
Hydrogenation of benzoyl chloride in the presence of Pd and `BaSO_(4)` givesA. benzyl alcoholB. benzoic acidC. bezaldehydeD. toluene |
| Answer» Correct Answer - C | |
| 14. |
Reduction of an isonitrile gives aA. primary amineB. secondary amineC. tertiary amineD. quaternary ammonium salt. |
| Answer» Correct Answer - B | |
| 15. |
The most suitable reagent for the conversion of `R-CH_(2)-OH rarr R-CHO` is :A. `KMnO_(4)`B. `K_(2)Cr_(2)O_(7)`C. `CrO_(3)`D. PCC (Pyridinium Chlorochromate) |
| Answer» Correct Answer - D | |
| 16. |
An isocyanide on reduction with hydrogen in the presence of platinum gives :A. amideB. primary amineC. secondary amineD. alcohol |
| Answer» Correct Answer - C | |
| 17. |
Ozonolysis of a organic compound gives formaldehyde as one of the products. This confirms the presence of :A. two ethylenic double bondsB. a vinyl groupC. an isopropyl groupD. an acetylenic triple bond |
| Answer» Correct Answer - B | |
| 18. |
Amongst the following the reagent that would convert 2-hexyne into trans-2-hexene isA. `H_(2).Pt//O_(2)`B. `H_(2).Pd//SO_(4)^(2-)`C. `Li//NH_(3)//C_(2)H_(5)OH`D. `NaBH_(4)` |
| Answer» Correct Answer - C | |
| 19. |
2-Hexyne gives trans-2-Hexene on treatment with :A. `Pt//H_(2)`B. `Li//NH_(3)`C. `Pd//BaSO_(4)`D. `Li//AlH_(4)` |
| Answer» Correct Answer - B | |
| 20. |
Carbonyl compounds can generally be converted to hydrocarbons byA. `H_(2)//Pt`B. `LiAIH_(4)`C. `N_(2)H_(4)-KOH`D. `K_(2)Cr_(2)O_(7)-H_(2)SO_(4)` |
| Answer» Correct Answer - C | |
| 21. |
What product is obtained when Benzencarbonitrile is hydrolysed.A. BenzoylchlorideB. BenzenecarboxamideC. BenzaldehydeD. Benzoic acid |
| Answer» Correct Answer - D | |
| 22. |
Which of the following compounds is resistant to periodic acid oxidation ?A. `{:(CH_(2)OH),("|"),(CO),("|"),(CH_(2)OH):}`B. `{:(CH_(2)OH),("|"),(CH_(2)),("|"),(CH_(2)OH):}`C. `{:(CH_(2)OH),("|"),(CH_(2)OH),("|"),(CH_(2)OH):}`D. `{:(CH_(2)OH),("|"),(CH_(2)OH):}` |
| Answer» Correct Answer - B | |
| 23. |
Glucose as well as fructose are oxidized by periodic acid. The number of moles of `HCOOH` formed from each mole of glucose and fructose areA. 5 and 5B. 5 and 4C. 5 and 3D. 4 and 3 |
| Answer» Correct Answer - C | |
| 24. |
`1-"Butyne" overset(KMnO_(4)//Delta)rarrX+Y` Identify X and Y ?A. `CH_(3)CH_(2)CH_(2)COOH+O_(2)`B. `CH_(3)CH_(2)COOH`C. `CH_(3)CH_(2)COOH+CO_(2)+H_(2)O`D. `CH_(3)CH_(2)COCH_(3)+HCOOH` |
| Answer» Correct Answer - C | |
| 25. |
The product which is not formed in the following reactions : `{:(" "CH_(3)" "CH_(3)),(" |"" |"),(" "Ph-C-CH-CH-CH-CH_(2)OH overset(HIO_(4)"(excess)")rarr),(" |"" |"" |"),(" "OH" "OH" "OH):}`A. `HCOOH`B. `Ph-overset(O)overset(||)(C)-CH_(3)`C. `OHC-overset(CH_(3))overset(|)(CH)-CH_(2)OH`D. `OHC-overset(CH_(3))overset(|)(CH)-CHO` |
| Answer» Correct Answer - D | |
| 26. |
When `CH_(2)=CH-COOH` is reduced with `LiAlH_(4)`, the compound obtained will be :A. `CH_(3)-CH_(2)-COOH`B. `CH_(2)=CH-CH_(2)OH`C. `CH_(3)-CH_(2)-CH_(2)OH`D. `CH_(3)-CH_(2)-CHO` |
| Answer» Correct Answer - B | |
| 27. |
Ethanol on reaction will alkaline `KMnO_(4)` gives:A. EthanalB. GlyoxalC. Acetic acidD. Acrolein |
| Answer» Correct Answer - C | |
| 28. |
When benzoic acid is treated with `LiAlH_(4)`, it formsA. BanzaldehydeB. Banzyl alcoholC. BenzeneD. Toluene |
| Answer» Correct Answer - B | |
| 29. |
In the following reaction `C_(2)H_(5)OC_(2)H_(5)+4H overset("Red P+HI")rarr 2X+H_(2)O`, X isA. EthaneB. EthyleneC. ButaneD. Propane |
| Answer» Correct Answer - A | |
| 30. |
The major product of following reaction is: `R-C-=N underset((2) H_(2)O)overset((1) AIH-Br_(2))rarr` ?A. `RCONH_(2)`B. `RCH_(2)NH_(2)`C. RCHOD. RCOOH |
| Answer» Correct Answer - C | |
| 31. |
The product of following reaction is `PhCH=CHCH=O underset((ii) H_(3)O^(Θ))overset((i) LiAIH_(4))rarr`A. `PhCH_(2)CH=CHCH_(2)OH`B. `Ph(OH)C=CHCH_(3)`C. `PhCH=CHCH_(2)OH`D. `PhCH_(2)CH_(2)CH_(2)-OH` |
| Answer» Correct Answer - D | |
| 32. |
`R-C-=N underset(-40^(@)C)overset(DIBAL+H,H_(@)O)rarr` Product The product formed is :A. `R-CO-NH_(2)`B. `R-CH_(2)-NH_(2)`C. `R-CHO`D. `R-CH_(2)-NO_(2)` |
| Answer» Correct Answer - C | |
| 33. |
The gas liberated by the electrolysis of Dipotassium succinate solution is :A. EthaneB. EthyneC. EtheneD. Propene |
| Answer» Correct Answer - C | |
| 34. |
An alkene on ozonolysis yields only ethanal. There is an isomar of this, which on ozonolysis yields:A. Propanone and methanalB. Propanone and ethanalC. Ethanal and methanalD. Only propanone |
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Answer» Correct Answer - A `"Alkene" underset((2) Zn-H_(2)O)overset((1) O_(3))rarr CH_(3)CHO` only |
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| 35. |
The compound which does not react with lithium aluminium hydride isA. 3-penten-2-oneB. methyl benzoateC. 2-pentanolD. propanenitrile |
| Answer» Correct Answer - C | |
| 36. |
Which of the following catalysis is/are used for partial reduction of alkyne ?A. `Na//NH_(3)(l)`B. `Ni_(2)B` or P-2 catalystC. Lindlar catalystD. Rossenmud catalyst |
| Answer» Correct Answer - A::B::C::D | |