InterviewSolution
Saved Bookmarks
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. |
In the given reaction : `overset(Conc. H_2SO_4)to` [X] as major product [X] will be :A. B. C. D. |
| Answer» Correct Answer - B | |
| 2. |
On heating glycerol with conc. `H_2SO_4`, a compound obtained which has an unpleasant odour. This compound is :A. ethylene glycolB. allyl alcoholC. acroleinD. glycerol sulphate |
| Answer» Correct Answer - C | |
| 3. |
Reaction of benzene with isobutylchloride `(CH_3CH(CH_3)CH_2Cl)` in the presence of anhydrous `AlCl_3` yields.A. tert-butylbenzeneB. iso-butylbenzeneC. n-butylbenzeneD. chlorobenzene |
| Answer» Correct Answer - A | |
| 4. |
For a Friedel - Craft reaction using `AlCl_3`which compound can be used as solvent, benzene or nitrobenzene ?A. nitrobenzene but not benzeneB. benzene but not nitrobenzeneC. both benzene and nitrobenzeneD. neither benzene nor nitrobenene |
| Answer» Correct Answer - A | |
| 5. |
The best sequence of reactions for preparation of the following compound from benzene is A. (i)`CH_3`COCl/`AlCl_3` (ii)Oleum (iii)`(CH_3)_2`CH-Cl(1 mole ) /`AlCl_3`B. (i)`(CH_3)_2CH-Cl` (1 mole)/`AlCl_3` (ii)`CH_3COCl//AlCl_3`(iii)OleumC. (i)Oleum (ii)`CH_3COCl//AlCl_3` (iii)`(CH_3)_2CH-Cl`(1 mole) /`AlCl_3`D. (i)`(CH_3)_2CH-Cl`(1 mole) /`AlCl_3`(ii) Oleum (iii)`CH_3CO Cl//AlCl_3` |
| Answer» Correct Answer - B | |
| 6. |
Major product of mononitration of the following compound is : A. B. C. D. |
| Answer» Correct Answer - D | |
| 7. |
Presence of a nitro group in a benzene ring:A. activates the ring towards electrophilic substitution.B. renders the ring basicC. deactivates the ring towards nucleophilic substitutionD. deactivates the ring towards electrophilic substitution |
|
Answer» Correct Answer - D EAS`prop1/"EWG"` on Benzene ring. |
|
| 8. |
The relative rates of mononitration of `R-C_6H_5` where `R=CH_3, -NO_2, -OH , -Cl` are :A. `CH_3 gt OH gt NO_2 gt Cl`B. `OH gt Cl gt CH_3 gt NO_2`C. `OH gt CH_3 gt NO_2 gt Cl`D. `OH gt CH_3 gt Cl gt NO_2` |
|
Answer» Correct Answer - D In presence of +M effect rate of mononitration increase and in presence of -M effect rate will decreases. |
|
| 9. |
Which of the following cannot be considered as a step of mechanism in chain reaction of methane with `Cl_2` ?A. `Cl_2 to Cl^(**)`B. `CH_4+Cl^(**)to CH_3Cl + H^(**)`C. `Cl^(**)+CH_4 to CH_3^(**)+HCl`D. `Cl^(**)+CH_3^(**)to CH_3Cl` |
| Answer» Correct Answer - B | |
| 10. |
2-Methylbutane on reaction with bromine in the presence of sunlight gives mainly-A. 1-Bromo-3-methylbutaneB. 1-Bromo-2-methylbutaneC. 2-Bromo-3-methylbutaneD. 2-Bromo-2-methylbutane |
| Answer» Correct Answer - D | |
| 11. |
The reaction of toluene with chlorine in the presence of ferric chloride gives mainlyA. o- and p- chlorotolueneB. m-chlorotolueneC. benzoylchlorideD. benzyl chloride |
| Answer» Correct Answer - A | |
| 12. |
`HBr` reacts with `CH_(2)=CH-OCH_(3)` under anhydrous conditions at room temperature to give:A. `CH_3CHO and CH_3Br`B. `BrCH_2CHO and CH_3Br`C. `BrCH_2-CH_2-OCH_3`D. `H_3C-CHBr-OCH_3` |
| Answer» Correct Answer - D | |
| 13. |
Match the chemical conversion in List-I with the approprotae reagents in List-II and select the correct answer using the code given below this list- ,A. `{:(P,Q,R,S),(2,3,1,4):}`B. `{:(P,Q,R,S),(3,2,1,4):}`C. `{:(P,Q,R,S),(2,3,4,1):}`D. `{:(P,Q,R,S),(3,2,4,1):}` |
| Answer» Correct Answer - A | |
| 14. |
What is the product formed when acetylene reacts with hypochlorous acid.A. `CH_3COCl`B. `ClCH_2CHO`C. `Cl_2CHCHO`D. `ClCH_2COOH` |
| Answer» Correct Answer - C | |
| 15. |
The correct statements for the following addition reactions is (are) A. (M and O) and (N and P) are two pairs of enantiomersB. Bromination proceeds through trans-addition in both the reactionsC. O and P are identical moleculesD. (M and O) and (N and P) are two pairs of diastereomers |
| Answer» Correct Answer - B::D | |
| 16. |
Among the following , reaction(s) which gives(give) tert-butyl benzene as the major product is(are)A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 17. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - A | |
| 18. |
Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light ? `underset("(E)")(CH_(underset(delta)(3))-CH_(underset(gamma)(2))-underset(beta)(CH)=underset(alpha)(CH_(2)))`A. `alpha` -hydrogenB. `gamma`-hydrogenC. `beta`-hydrogenD. `delta`-hydrogen |
| Answer» Correct Answer - B | |
| 19. |
Among the following compounds which can be dehydrated very easily :A. B. C. D. |
| Answer» Correct Answer - C | |
| 20. |
Identify the product of the following elimination reaction X and Y respectively with stereochemistry :A. B. C. D. |
| Answer» Correct Answer - C | |
| 21. |
on mercuration-demercuration produces the major product .A. B. C. D. |
| Answer» Correct Answer - A | |
| 22. |
The major product of the following reaction is : `CH_3CH_2undersetunderset(Br)(|)CH-undersetunderset(Br)(|)CH_2underset((ii)NaNH_2 "in liq." NH_3)overset((i)KOH alc.)to`A. `CH_3CH=C=CH_2`B. `CH_3CH=CHCH_2NH_2`C. `CH_3CH_2C-=CH`D. `CH_3CH_2undersetunderset(NH_2)(|)CH-undersetunderset(NH_2)(|)CH_2` |
| Answer» Correct Answer - C | |
| 23. |
Which of the following is the major product for the given reaction ? A. 3-bromo-2-methylpentaneB. 2-bromo-2-methylpentaneC. 1-bromo-2-methylpentaneD. 4-bromo-2-methylpentane |
| Answer» Correct Answer - B | |
| 24. |
Elimination of `HBr`from 2 bromobutane results in the formation of .A. Predominantly 2-butyneB. Predominantly 1-buteneC. Predominantly 2-buteneD. Equimolar mixture of 1 and 2-butene |
| Answer» Correct Answer - C | |
| 25. |
The alkene limonene has the following structure. What product results from the reaction of limonene and chlorine water ?A. B. C. D. |
| Answer» Correct Answer - B | |
| 26. |
Which of the following is the best reagent to convert 1-Methylcyclohexene into 2-methylcyclohexanol ?A. Dil `H_2SO_4`B. `Hg(OA c)_2//NaBH_4, H_2O`C. `B_2H_6//H_2O_2, OH`D. `Conc. H_2SO_4` |
| Answer» Correct Answer - C | |
| 27. |
Correct statement for E1 Reaction is :A. It is a two step process.B. Rearrangement is possibleC. Good leaving group favoursD. All of these |
| Answer» Correct Answer - D | |
| 28. |
Which of the following compound will give three alkenes after dehydrohalogenation.A. `CH_3-CH_2-CH_2-CH_2-Br`B. `CH_3-CH_2-undersetunderset(Br)(|)CH-CH_3`C. `CH_3-undersetunderset(Br)(|)oversetoverset(CH_3)(|)C-CH_3`D. `CH_3-CH_2-undersetunderset(Br)(|)CH-Ph` |
| Answer» Correct Answer - B | |
| 29. |
Substrate that show E1 reactionA. `CH_3CH_2I`B. C. `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH_2-I`D. |
| Answer» Correct Answer - C | |
| 30. |
Typical features of E2 involve :A. Two step reactionB. Second step is the rate determining stepC. Anti-periplanar transition stateD. Formation of a carbanion intermediate, stabilized by conjugation with a strong -M group. |
|
Answer» Correct Answer - C It is basic fact. |
|
| 31. |
The dehydration reaction is represented by :A. (III),(ii),(R)B. (III),(iv),(P)C. (I)(ii),(S)D. (IV),(iii),(R) |
| Answer» Correct Answer - C | |
| 32. |
What is correct order of electrophillic addition of following alkene ? A. II gt IV gt I gt IIIB. IV gt III gt II gt IC. III gt I gt IV gt IID. I gt II gt III gt IV |
|
Answer» Correct Answer - C Electron releasing group and stability of carbocation/halonium ion will decide rate of reaction in electrophilic addition reaction. |
|
| 33. |
Which of the following will undergo sulphonation at fastest rate ?A. B. C. D. |
| Answer» Correct Answer - B | |
| 34. |
o,p-directing group are mostly :A. Activation groupB. Deactivating groupsC. Neutral groupsD. None of these |
| Answer» Correct Answer - A | |
| 35. |
Which among the following is deactivating group ?A. `-Cl`B. `-OR`C. `-NH_2`D. `-NHR` |
| Answer» Correct Answer - A | |
| 36. |
`CH_3-CH_2-CH_2-CH_3+Cl_2overset(hv)to` Major product :A. `CH_3-CH_2-CH_2-CH_2+Cl`B. `CH_3-undersetunderset(Cl)(|)CH-CH_2-CH_3`C. `CH_3-undersetunderset(CH_3)(|)CH-CH_2-Cl`D. `CH_3-undersetunderset(CH_3)(|)oversetoverset(Cl)(|)C-CH_3` |
| Answer» Correct Answer - B | |
| 37. |
Which of the following is not o,p - directing group ?A. `-NH_2`B. `-OH`C. `-X`(halogens)D. `-CHO` |
| Answer» Correct Answer - D | |
| 38. |
Ethylbenzene+`Cl_2overset("Light")to ` major product is :A. o- and p- chloroethylbenzeneB. 1-ChloroethylbenzeneC. 2-ChloroethylbenzeneD. m-Chloroethylbenzene |
| Answer» Correct Answer - B | |
| 39. |
Statement-1:Bromobenzene upon reaction with `Br_2//Fe` gives 1,4-dibromobenzene as the major product. Statement-2:In bromobenzene, the inductive effect of the bromo group is more dominant than the mesomeric effect in directing the incoming electrophile.A. Statement-1 is True, Statement-2 is True , Statement-2 is a correct explanation of Statement-1.B. Statement-1 is True, Statement-2 is True , Statement-2 is NOT a correct explanation of Statement-1.C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True |
| Answer» Correct Answer - C | |
| 40. |
X,Y and Z reaction are :A. Simple hydration reactionB. Hydroboration oxidation, hydration and oxymercuration demercurationC. Hydroboration oxidation, oxymercuration demercuration and hydrationD. Oxymercuration demercuration , hydroboration oxidation and hydration |
|
Answer» Correct Answer - C X=Hydrobroation oxidation, Y=oxymercuration & demercuration, Z=Simple hydration reaction |
|
| 41. |
The major product of the following reaction is A. a hemiacetalB. an acetalC. an etherD. an ester |
| Answer» Correct Answer - B | |
| 42. |
Different possible thermal decomposition pathways for peroxyesters are shown below. Match each pathway from List-I with an appropriate structure from List II and select the correct answer using the code given below the lists. A. `{:(P,Q,R,S),(1,3,4,2):}`B. `{:(P,Q,R,S),(2,4,3,1):}`C. `{:(P,Q,R,S),(4,1,2,3):}`D. `{:(P,Q,R,S),(3,2,1,4):}` |
| Answer» Correct Answer - A | |
| 43. |
How many structures of F is possible?A. 2B. 5C. 6D. 3 |
| Answer» Correct Answer - D | |
| 44. |
What is the product when one mole of Pent-1-yne treated with two moles of HCl ?A. 1,2-DichloropentaneB. 2,3-DichloropentaneC. 1,1-DichloropentaneD. 2,2-Dichloropentane |
| Answer» Correct Answer - D | |
| 45. |
Which will form 2,2-Dibromopropane with HBr ?A. `CH_2=CH-CH_3`B. `CH_3-C-=CH`C. `CH_3-undersetunderset(Br)(|)C=CH_2`D. Both B & C |
| Answer» Correct Answer - D | |
| 46. |
In the following sequence, product I,J and L are formedK represents a reagent. The structure of compound J and K, respectively areA. B. C. D. |
| Answer» Correct Answer - A | |
| 47. |
n the following sequence, product I,J and L are formedK represents a reagent. The structure of products L isA. B. C. D. |
| Answer» Correct Answer - C | |
| 48. |
In the following reaction sequence , product I,J and L are formed , K represents a reagent. The structure of the product I isA. B. C. D. |
| Answer» Correct Answer - D | |
| 49. |
Which of the following statements is/are correct for alkyl halide ?A. In most unimolecular reactions of alkyl halide `S_N1` reactions is favoured over E1 reactionB. E1 mechanism is favoured as compared to `S_N1` mechanism by branching at `beta` carbon.C. In unimolecular reaction, increasing the temperature favours E1 mechanismD. E1 reactions are favoured by the use of weak bases and by the use of polar solvents. |
|
Answer» Correct Answer - A::B::C::D All statement are correct. |
|
| 50. |
Three acyclic alkenes (x,y,z) on catalytic hyrogenation give same alkane. On reaction with HCl (x,y,z) form same major tertiary halide product.Reductive ozonolysis of mixture of (x,y,z) gives a mixture of two moles of `CH_2=O` one moles of `CH_3CH=O` one mole of acetone, one mole of butanone and one mole of 2-methyl propanal, x,y and z do not have any stereoisomers. What is true about x,y,zA. These have molecules formula `C_3H_6`B. x,y,z on catalytic hydrogenation give chiral alkanesC. These are unbranced alkenesD. These form same carbocation intermediate on reaction with HCl to give the major product. |
| Answer» Correct Answer - D | |