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. |
Which one of the following is most reactive towards electrophilic reagent ?A. B. C. D. |
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Answer» Correct Answer - 2 Due to `+M` effect of `-OH` group and hyperconjugation of `-CH_(3)` group |
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| 2. |
The chemical system that is non`-` aromatic isA. B. C. D. |
| Answer» Correct Answer - 3 | |
| 3. |
Which is the correct matched for the following reactionsA. B. C. D. |
| Answer» Correct Answer - D | |
| 4. |
Which of the following compound give solvolysis reaction with slowest rate ?A. `P-overset(o+)(N)R_(3)-C_(6)H_(4)-CH_(2)-Br`B. `p-C Cl_(3)-C_(6)H_(4)-CH_(2)-Br`C. `P-N equiv C-C_(6)H_(4)-CH_(2)-Br`D. `C_(6)H_(5)-CH_(2)-Br` |
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Answer» Correct Answer - C `-m` group decreases the stability of carbocation. |
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| 5. |
Which compound give `CO_(2)` with `NaHCO_(3)` ?A. PhenolB. GlycerolC. `n-`butanolD. Acetic acid |
| Answer» Correct Answer - 4 | |
| 6. |
Correct order of basic nature isA. `NH_(3)gtCH_(2)NH_(2)gtC_(6)H_(5)NH_(2)`B. `C_(6)H_(5)NH_(2)gtNH_(3)gtCH_(3)NH_(2)`C. `CH_(3)NH_(2)gtNH_(3)gtC_(6)H_(5)NH_(2)`D. None of these |
| Answer» Correct Answer - 3 | |
| 7. |
Which of the following is more basic than aniline? .A. `p-`NitroanilineB. Benzyl amineC. Diphenyl amineD. Triphenyl amine |
| Answer» Correct Answer - 2 | |
| 8. |
Among the following the dissociation constant is highest forA. `C_(6)H_(5)OH`B. `C_(6)H_(5)CH_(2)OH`C. `CH_(3)C=CH`D. `CH_(3)NH_(3)^(+)Cl^(-)` |
| Answer» Correct Answer - 4 | |
| 9. |
Reaction intermediate of `EicB` reaction is `:`A. CarbocationB. CarbanionC. BenzyneD. Free radical |
| Answer» Correct Answer - B | |
| 10. |
Which is the correct order for basicity ?A. `F^(-) lt I^(-)`B. `Noverset(ɵ)(H)_(2) lt overset(ɵ)(O)H`C. `CH_(2)=overset(ɵ)(CH) lt CH equiv overset(ɵ)(C)`D. `CH_(3)NH_(2) lt CH_(3)overset(ɵ)(N)H` |
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Answer» Correct Answer - 4 Stronger base give electrons readily to `H^(+)` ion. |
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| 11. |
Select the correct option `:` `S_(1) :` Catechol is less acidic than resorcinol. `S_(2) :` Ortho - nitrophenol is less acidic than para - nitrophenol. `S_(3) :` Ortho- cresol is less acidic than its meta and para isomers. `S_(4) :` Generally ortho substituted phenols are less acidic than their coressponding meta & para isomers.A. All are correctB. Only `S_(1),S_(2) & S_(3)` are correct.C. Only `S_(1)` and `S_(2)` are correctD. Only `S_(1)` and `S_(3)` are correct. |
| Answer» Correct Answer - 2 | |
| 12. |
Consider the `S_(N)` 1 solvolysis of the following hallides in aqueous formic acid `:` Which one of the following is correct sequence of the halides given above in the decreasing order of their reactivity ?A. `IIIgtIVgtIIgtI`B. `IIgtIVgtIgtIII`C. `IgtIIgtIIIgtIV`D. `IIIgtIgtIIgtIV` |
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Answer» Correct Answer - 1 Reactivity `alpha` stability of carbocation. |
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| 13. |
The correct increasing order of the reactivity of halides for `S_(N)` 1 reaction is `:`A. `{:(CH_(3)-CH_(2)-X,lt,(CH_(3))_(2)CH-X,lt,CH_(2)=CH-CH_(2)-X,lt,PhCH_(2)-X),(,,,,,,):}`B. `{:((CH_(3))_(2)CH-X,lt,CH_(3)-CH_(2)-X,lt,CH_(2),lt,PhCH_(2)-X),(,,,,,,):}`C. `{:(PhCH_(2)-X,lt,(CH_(3))_(2)CH-X,lt,CH_(2)-CH_(2)-X,lt,CH_(2)=CH-CH_(2)-X),(,,,,,,):}`D. `{:(CH_(2)=CH-CH_(2)-X,lt,Ph-CH_(2)-X,lt,(CH_(3))_(2)CH-X,lt,CH_(3)-CH_(2)-X),(,,,,,,):}` |
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Answer» Correct Answer - 1 The relative stability of alkyl carbocation is due to inductive effect hyperconjugation, while that of stable carbocation is due to resonance. The order is `:` `CH_(3)CH_(2)X lt (CH_(3))_(2)CH-X lt CH_(2)=CH-CH_(2)X lt PhCH_(2)-X` |
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| 14. |
In which of the following rate of `S_(N) 1` is very fast ?A. `CH_(3)-overset(Cl)overset(|)(CH)-CH_(3)`B. `Ph-overset(cl)overset(|)(CH)-CH_(3)`C. `CH_(3)CH_(2)-O-CH_(2)-Cl`D. `CH_(3)-CH=CH-Cl` |
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Answer» Correct Answer - 3 Due to `+M` effect of `underset(..)overset(..)(O)-R` group intermediate `C^(+)` is stabilised. |
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| 15. |
Maximum enol content is in `:`A. B. C. D. |
| Answer» Correct Answer - 2 | |
| 16. |
Which of the following is not a nucleophile ?A. `CH_(3)ONa`B. `PhLi`C. `PH_(3)`D. `overset(ɵ)(N)H_(4)` |
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Answer» Correct Answer - 4 `overset(o+)(N)H_(4)` do not have lone pair of electron. |
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| 17. |
For the following `(i) I^(-) (ii) Cl^(-) (iii) Br^(-)` the increasing order of nucleophilicity would be:A. `I^(-) lt Cl^(-) lt Br^(-)`B. `Br^(-) lt Cl^(-) lt I^(-)`C. `I^(-) lt Br^(-) lt Cl^(-)`D. `Cl^(-) lt Br^(-) lt I^(-)` |
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Answer» Correct Answer - 4 On going top to bottom in group nucleophilicity increase. |
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| 18. |
Which order is correct for both nucleophilicity and basicity ?A. `Cl^(-) lt I^(-)`B. `H_(2)O lt H_(2)S`C. `MeO^(-) gt F^(-)`D. `EtO^(-) lt OH^(-)` |
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Answer» Correct Answer - C In periods left to right nucleophilicity and basicity both decreases. |
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| 19. |
In which delocalisation of positive charge is possibleA. B. C. D. |
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Answer» Correct Answer - 4 In all other positive charge is not in conjugation. |
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| 20. |
The order of stability of the following tautomeric compounds is (i). `CH_(2)=overset(OH)overset(|)(CH)-CH_(2)-overset(O)overset(||)(C)-CH_(3)hArr` (ii). `CH_(3)-overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3)hArr` (iii). `CH_(3)-overset(OH)overset(|)(C)=CH-overset(O)overset(||)(C)-CH_(3)`A. `IIIgtIIgtI`B. `IIgtIgtIII`C. `IIgtIIIgtI`D. `IgtIIgtIII` |
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Answer» Correct Answer - 1 Acetyl acetone is liquid and exist mainly as III due to intromolecular `H-` bonding and the correct answer is `IIIgtIIgtI`. However in aqueous medium, the correct answer is `IIgtIIIgtI`. |
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| 21. |
Which of the following is not electrophile ?A. `CN^(-)`B. `H^(+)`C. `Br^(+)`D. `AlCl_(3)` |
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Answer» Correct Answer - 1 `CN^(-)` is a nucleophile due to presence of negative charge. |
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| 22. |
The conversion of `Cl-CH=CH-Cl` to `CHCl_(2)-CHCl_(2)` can be carried out with `,`A. `HCl("excess")`B. `Cl_(2)//hv`C. `Cl_(2)//C Cl_(4)`D. `Cl_(2)//NaOH` |
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Answer» Correct Answer - 3 `Cl-CH=CH-Clunderset(AlCl_(3))overset(Cl_(2))rarr CHCl_(2)-CHCl_(2)" "[E^(+)`addition reaction ] |
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| 23. |
Arrange pH of the given compounds in decreasing order `:`A. PhenolB. Ethyl alcoholC. Formic acidD. Benzoic acid |
| Answer» Correct Answer - 2 | |
| 24. |
Which statement is incorrect `:`A. Halogens are deactivating groups but have ortho-para directing nature.B. Nitrobenzene, gives metanitrotoluence on reaction with `CH_(3)Cl//AlCl_(3)`.C. Nitro group is meta directing.D. Aniline does not give Friedal Craft reaction directly. |
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Answer» Correct Answer - 2 Deactivating nature of halogen can be explain by `-I &` ortho-para directing nature can be explained by stability of intermediate by `+M` effect. |
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| 25. |
`C_(2)H_(5)OHoverset(X)rarrC_(2)H_(5)Cl` X can be except `:`A. `SOCl_(2)`B. `PCl_(3)`C. `PCl_(5)`D. `NaCl` |
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Answer» Correct Answer - D NaCl is the salt of strong acid so does not react. |
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| 26. |
The reaction is `:` `CH_(3)CHBr-CH_(2)Br+2KOH("alc.")overset(Delta)rarr CH_(3)-C equiv CH+2KBr+2H_(2)O`A. DehalogenationB. DehydrohalogenationC. DecarboxylationD. Dehydration |
| Answer» Correct Answer - 2 | |
| 27. |
`CH_(3)-CH_(2)-O-CH_(2)-Clunderset("other")overset(CH_(3)MgBr)rarr` Which statement is incorrect for the above reaction `:`A. `CH_(3)-CH_(2)-O-CH_(2)-Cl` react faster than `underset(underset(Cl)|)(CH_(2))CH_(2)-O-CH_(3)` when treaterd with `CH_(3)MgBr`.B. Reasonance stabilised carbonium ion is formed in the above reaction.C. Product of the reaction is diethyl etherD. Reaction is proceed through `S_(N)2` mechanism. |
| Answer» Correct Answer - 2 | |
| 28. |
Select false statement from the following ?A. Formation of dechlorocarbene from `CHCl_(3)` is an elmination reaction.B. Carbocations and free radicals are planar chemical species.C. In the rearrangement of carbocation , `1^(@)-` carbocation may convert into `2^(@)-` carbocation.D. `C Cl_(3)` group is `o,p-` directing becausing it exhibit hyperconjugation with benzene ring. |
| Answer» Correct Answer - 4 | |