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.
| 51. |
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. x,y,z areA. chain isomersB. Position isomersC. Geometrical isomersD. Optical isomers |
| Answer» Correct Answer - B | |
| 52. |
The peroxide effect occurs by :A. ionic mechanismB. homolytic fission of double bondC. heterolytic fission of double bondD. free radical mechanism |
| Answer» Correct Answer - D | |
| 53. |
The preoxide effect occurs by :A. ionic mechanismB. heterolytic fission of double bondC. homolytic fission of double bondD. free radical mechanism |
| Answer» Correct Answer - D | |
| 54. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - D | |
| 55. |
Which of the following statements are correct for above reaction .A. Reaction intermediate is carbocationB. Products is mixture of two enantiomers.C. Reaction intermediate is stabilized by +I, hyperconjugation & resonance.D. `Br_2` at high temperture also give same product in the place of NBS. |
| Answer» Correct Answer - B::C::D | |
| 56. |
Structure of X can be :A. B. C. D. |
| Answer» Correct Answer - A::B::C::D | |
| 57. |
True statement about above reaction :A. Reagent involve stereospecific syn addition of H and OH species .B. Product obtained is trans isomer.C. Boron atom acts as electrophileD. Two stereoisomers are obtained as product. |
| Answer» Correct Answer - A::B::C::D | |
| 58. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - A | |
| 59. |
Consider the reaction sequence below : A. B. C. D. |
| Answer» Correct Answer - A | |
| 60. |
The major product in the following conversion is : A. B. C. D. |
| Answer» Correct Answer - A | |
| 61. |
Which of the following compounds will give same major product on acid catalysed hydration ?A. `Ph-undersetunderset(CH)(|)oversetoverset(CH)(|)C-CH=CH`B. `Ph-oversetoverset(CH)(|)CH-undersetunderset(CH)(|)C=CH`C. D. |
| Answer» Correct Answer - A::B::C::D | |
| 62. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - C | |
| 63. |
Acid catalysed dehydration of 2-pentanol would giveA. 1-pentene as a major productB. cis 2-pentene as a major productC. trans-2-pentene as a major productD. cis- and trans - 2-pentene in equal amount. |
| Answer» Correct Answer - C | |
| 64. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - B | |
| 65. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - D | |
| 66. |
The major product of the following reaction is A. B. C. D. |
| Answer» Correct Answer - B | |
| 67. |
The major product obtained on acid-catalysed hydration of 2-phenylpropane isA. 2-Phenylpropan-2-olB. 2-Phenylpropan-1-olC. 3-Phenylpropan-2-olD. 1-Phenylpropan-1-ol |
| Answer» Correct Answer - A | |
| 68. |
The major product obtained in the following conversion is : A. B. C. D. |
| Answer» Correct Answer - B | |
| 69. |
The product `(P)` of the following reaction is: A. B. C. D. |
| Answer» Correct Answer - B | |
| 70. |
The major product obtained in the following reaction is : A. `C_6H_5CH=CHC_6H_5`B. `(+)C_6H_5CH(O^(t)Bu)CH_2C_6H_5`C. `(-)C_6H_5CH(O^(t)Bu)CH_2C_6H_5`D. `(pm)C_6H_5CH(O^t Bu)CH_2C_6H_5` |
| Answer» Correct Answer - A | |
| 71. |
Which of the following statements is correct ?A. `-NO_2` group activates the benzene ring for attack of electrophile at ortho and para positionB. `-NH_2` group activates the benzene ring for attack of electrophile at ortho and para positionC. Both `-NO_2` group as well as `-NH_2` group activate the benene ring for attack of electrophile at ortho and para position.D. Neither `-NO_2` group nor `-NH_2` group activate the benzene ring the attack of electrophile at ortho and para position. |
| Answer» Correct Answer - B | |
| 72. |
The correct name of the product obtained isA. cis-1,2-dibromocyclohexaneB. cis-1,4-dibromocyclohexaneC. trans-1,2-dibromocyclohexaneD. trans-1,4-dibromocyclohexane |
| Answer» Correct Answer - C | |
| 73. |
Which isomer of xylene can give three different monochloroderivatives ?A. o-xyleneB. m-xyleneC. p-xyleneD. xylene cannot give a monochioro derivative |
| Answer» Correct Answer - B | |
| 74. |
The increasing order of nitration of the following compound is : A. (a) lt (b) lt (d) lt (c )B. (a) lt (b) lt (c ) lt (d)C. (b) lt (a) lt (c ) lt (d)D. (b) lt (a) lt (d) lt (c ) |
| Answer» Correct Answer - A | |
| 75. |
In the nitration of an aromatic compound using a mixture of concentrated nitric acid and sulphuric acid, the acids respectively function asA. an oxidising agent and an acidB. a Bronsted and a Lewis acidC. a base and an acidD. an acid and an oxidising agent |
| Answer» Correct Answer - C | |
| 76. |
(I) The rate of `o-`nitration of the above compounds, (I) toluene, (II) 2-D-toluene and (III) 2, `6-D_(2)-`toluene is in the following orderA. I gt II gt IIIB. II gt I gt IIIC. III gt I gt IID. The rate is the same for all the three compounds |
| Answer» Correct Answer - D | |
| 77. |
Which statement is correct about photochemical bromination of Butane ? `CH_3-CH_2-CH_2-CH_3overset(Br_2,h upsilon)to`A. 1-Bromobutane and 2-Bromobutanes are formed in equal amounts.B. 2-Bromobutane is formed with faster rate than 2-chlorobutane in the other experiment of chlorination.C. The major product is an equimolar mixture of two compounds.D. Major product is formed by more stable carbocation. |
| Answer» Correct Answer - C | |
| 78. |
`CH_2=CH-CH_3overset(NOCl)toX` , X is :A. `undersetunderset(Cl)(|)CH_2-undersetunderset(NO)(|)CH-CH_3`B. `undersetunderset(NO)(|)CH_2-undersetunderset(Cl)(|)CH-CH_3`C. `ON-CH_2-CH_2-CH_2-Cl`D. `ON-undersetunderset(Cl)(|)CH-CH_2-CH_3` |
| Answer» Correct Answer - B | |
| 79. |
The major product of the following reaction is : `(CH_3)_2C=CH-CH_2-CH_3overset((i)B_2H_6,"ether"(ii)H_2O_2, "NaOH")to`A. B. C. D. |
| Answer» Correct Answer - D | |
| 80. |
`CH_3-undersetunderset(CH_3)(|)CH-underset(Cl)underset(|)(CH)-CH_3 overset(EtOH//Delta)to` Major elimination product X. X is :A. `CH_3-oversetoverset(CH_3)(|)CH-CH=CH_3`B. `CH_3-oversetoverset(CH_3)(|)C=CH-CH_3`C. `CH_3-overset(C_2H_5)overset(|)C=CH_2`D. `CH_3-oversetoverset(CH_3)(|)C=oversetoverset(CH_3)(|)C-CH_3` |
| Answer» Correct Answer - B | |
| 81. |
`CH_3-undersetunderset(CH_3)(|)CH-oversetoverset(Cl)(|)CH-CH_3 underset(Delta)overset(t-BuO) to` Major Product is :A. `CH_3-undersetunderset(CH_3)(|)C=CH-CH_3`B. `CH_3-undersetunderset(CH_3)(|)CH-CH=CH_2`C. `CH_2=undersetunderset(CH_3)(|)C-CH_2-CH_3`D. `CH_3-undersetunderset(CH_3)(|)CH-oversetoverset(OH)(|)CH-CH_3` |
| Answer» Correct Answer - B | |
| 82. |
Major product of given reaction is - `O_2N-CH_2-undersetunderset(Cl)(|)CH-CH_3overset(overset(Theta)(O)H)underset(Delta)to` Major productA. `O_2N-CH=CH-CH_3`B. `O_2N-CH_2-CH=CH_2`C. `O_2N-CH=undersetunderset(Cl)(|)C-CH_3`D. `CH_2=undersetunderset(NO_2)(|)C-CH_3` |
| Answer» Correct Answer - A | |
| 83. |
Select the incorrect option of the following statements.A. Bimolecular elimination of alkyl halides is a stereospecific reaction.B. In `S_N2` reaction a single isomer in the only productC. Alcohol dehydrate in strongly basic conditions by E1 mechanism.D. 3-hydroxypropanal dehydrates in strong basic condition by E1cb mechanism. |
| Answer» Correct Answer - C | |
| 84. |
In which of the following reaction, regioselectivity cannot be observed ?A. `CH_3-undersetunderset(H)(|)oversetoverset(CH_3)(|)C-CH_2-Cl overset(alc. KOH//Delta)to `B. `CH_3-undersetunderset(Cl)(|)oversetoverset(CH_3)(|)C-CH_3 overset(alc. KOH//Delta) to`C. `CH_3-undersetunderset(Cl)(|)oversetoverset(CH_3)(|)C-CH_2-CH_3 overset(alc. KOH//Delta) to`D. `CH_3-oversetoverset(CH_3)(|)CH-undersetunderset(Cl)(|)CH-CH_3overset(alc.KOH//Delta)to` |
| Answer» Correct Answer - C::D | |
| 85. |
Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination , this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose `beta`-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol gt secondary school gt Primary alcohol. Which of the following dehydration product (major ) is incorrect ?A. B. `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-oversetoverset(OH)(|)CH-CH_3underset(Delta)overset(conc.H_2SO_4)to CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH=CH_2`C. `CH_3CH_2CH_2CH_2OHunderset(Delta)overset(conc.H_2SO_4)to CH_3-CH=CH-CH_3`D. |
| Answer» Correct Answer - B | |
| 86. |
What is the major product that will be formed in the following reaction ? `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH=CH_2+HCl to`A. `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-undersetunderset(CH_3)(|)CH-CH_3`B. `CH_3-undersetunderset(Cl)(|)oversetoverset(CH_3)(|)C-undersetunderset(CH_3)(|)CH-CH_3`C. `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH_2-CH_2-Cl`D. `CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-undersetunderset(Cl)(|)CH-CH_2-CH_2-undersetunderset(Cl)(|)CH-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH_3` |
| Answer» Correct Answer - B | |
| 87. |
The major product of the following reaction is : `C_6H_5CH_2-undersetunderset(Br)(|)oversetoverset(CH_3)(|)C-CH_2CH_3underset(C_2H_5OH)overset(C_2H_5ONa)to`A. `C_6H_5CH_2-undersetunderset(CH_3)(|)C=CHCH_3`B. `C_6H_5CH_2-undersetunderset(CH_2CH_3)(|)C=CH_2`C. `C_6H_5CH_2-underset(OC_2H_5)underset(|)overset(CH_3)overset(|)C-CH_2CH_3`D. `C_6H_5CH=undersetunderset(CH_3)(|)C-CH_2CH_3` |
| Answer» Correct Answer - D | |
| 88. |
`CH_3-CH_2-undersetunderset(CH_3)(|)oversetoverset(Cl)(|)C-CH_2-CH_3overset(80% EtOH)to` What is/are true about above reaction ?A. Major product is given by `S_N1` reaction.B. Through E1 mechanism 3 alkenes are formed.C. 3-Methylpentan-3-ol is also formed as one of the productD. Fractional distillation of elimination products will give two fractions. |
| Answer» Correct Answer - A::B::C | |
| 89. |
Identify the major products in the following reactions ? `CH_3-CH_2-undersetunderset(" "CH_3)(" "|)oversetoverset(" "CH_3)(" "|)(.^(o+)N)-CH_2-CH_2-CH_3 overset(overset(Theta)(O)H//Delta)to`A. `CH_3-CH=CH_2`B. `CH_2-CH_2`C. `{:(" "CH_(3)),(" |"),(CH_(3)CH_(2)-N-OH),(" "o+"|"),(" "CH_(3)):}`D. `C_2H_5-OH` |
| Answer» Correct Answer - B | |
| 90. |
(I)(Reactant) In this reaction I and II are ,A. EnantiomersB. Structure isomersC. Geometrical isomersD. Identical compounds |
| Answer» Correct Answer - C | |
| 91. |
The correct order of `S_N2//E2` ratio of the % yield of product of the following halide is : (P)`CH_3-CH_2-undersetunderset(I)(|)oversetoverset(Ph)(|)C-CH_3` (Q)`CH_3-undersetunderset(Ph)(|)CH-undersetunderset(I)(|)CH-CH_3` (R)`CH_3-CH_2-I` (S)`CH_3-CH-undersetunderset(I)(|)CH-CH_3`A. R gt S gt Q gt PB. R gt Q gt S gt PC. P gt R gt S gt QD. Q gt P gt R gt S |
| Answer» Correct Answer - A | |
| 92. |
Which of the reagents on reaction with cyclohexanol gives best yield of cyclohexene?A. conc. HClB. conc. HBrC. conc. `H_3PO_4`D. `HCl + ZnCl_2` |
| Answer» Correct Answer - C | |
| 93. |
Four processes are indicated below : The processes that do not produce 1-methylcyclohexanol areA. II , IVB. I, IIC. III, IVD. I, III |
| Answer» Correct Answer - D | |
| 94. |
Which statement is false for elimination reaction .A. `beta`-elimination is more common than `alpha` & `gamma` eliminationB. In`beta`-elimination , formation of multiple bond occurC. `beta`-elimination may be E1, E2 or E1cBD. E1 & E2 requires presence of poor leaving group but E1cB requires presence of good leaving group. |
|
Answer» Correct Answer - D self understood |
|
| 95. |
The major product formed upon addition of 1 mole of HBr in the following reaction is : A. B. C. D. |
| Answer» Correct Answer - B | |
| 96. |
Anti Markownikoff addition of HBr is not observed in :A. PropeneB. 1-ButeneC. But-2-eneD. Isobutene |
| Answer» Correct Answer - C | |
| 97. |
`CH_3-undersetunderset(CH_3)(|)C=CH_2+HBr overset(R_2O_2)to` Product is :A. `CH_3-undersetunderset(CH_3)(|)CH-oversetoverset(Br)(|)CH_2`B. `CH_3-undersetunderset(CH_3)(|)oversetoverset(Br)(|)C-CH_3`C. `CH_3-undersetunderset(CH_3)(|)oversetoverset(Br)(|)C-oversetoverset(Br)(|)CH_2`D. `oversetoverset(Br)(|)CH_2-undersetunderset(CH_3)(|)C=CH_2` |
| Answer» Correct Answer - A | |
| 98. |
In which of the following pairs the bromination of first member is easier than the second member ?A. Isobutane, n-ButaneB. n-Butane, IsobutaneC. Methane, EthaneD. None of these |
| Answer» Correct Answer - A | |
| 99. |
An unknown compound is analyzed to have a molecular mass of 84 and elements has carbon and hydrogen only.When subjected to chlorination in the presence of light, three monochlorinated products are isolated . This compound must beA. methylcyclopentaneB. cyclohexaneC. hexaneD. 1,3-dimethylcyclobutane |
| Answer» Correct Answer - D | |
| 100. |
Arenium ion is formed in the reaction.A. (I)(iv)(P)B. (II)(iii)(P)C. (III)(iv)(R)D. (IV)(ii)(S) |
| Answer» Correct Answer - A | |