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. |
Find the product of the following reaction, Find out the final product (C) :A. B. C. D. None of these |
| Answer» Correct Answer - B | |
| 52. |
Pick the correct orders of reactivityA. B. C. D. |
| Answer» Correct Answer - A::B | |
| 53. |
Which of the following reactions is not feasible ?A. B. C. D. |
| Answer» Correct Answer - D | |
| 54. |
Which of the following reactions are not feasible?A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 55. |
Which of the following are `S_(N^(2))` reactions?A. B. C. D. |
| Answer» Correct Answer - A::C | |
| 56. |
Which of the following reactions take place by `S_(N^(2))` reaction?A. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 57. |
The reaction of 4-bromobenzyl chloride with NaCN in ethanol leads to :A. 4-Bromobenzyl cyanideB. 4-Cyanobenzyl chlorideC. 4-Cyanobenzyl cyanideD. 4-Bromo-2-cyanobenzyl chloride |
| Answer» Correct Answer - A | |
| 58. |
Which of the following is `beta`-elimination reaction ?A. B. `CHBr_3+Me_3CO^(ᶱ)K^(o+)to:CBr_2`C. D. |
| Answer» Correct Answer - C | |
| 59. |
Identify the major product of following reaction :A. B. C. D. No reaction |
| Answer» Correct Answer - B | |
| 60. |
Identify the major product of following reactionA. B. C. D. |
| Answer» Correct Answer - C | |
| 61. |
Predit the major product of given reactionA. B. C. D. |
| Answer» Correct Answer - C | |
| 62. |
Find the major product of following reaction : Major product :A. B. C. D. Elimination reaction |
| Answer» Correct Answer - A | |
| 63. |
Which of the following are better leaving group thanA. B. C. `-overset(o+)N-=N`D. `-F^(ө)` |
| Answer» Correct Answer - A::B::C | |
| 64. |
Optically pure `(S)-(+)`-2bromo octane `[alpha]_(D)^(25^(@)C)=+36^(@)`, react with aqueous NaOH in acetone to give optically pure `(R)-(-)`-2-octanol `[alpha]_(D)^(25^(@)C)` `=-10.3^(@)`. With partially racemized bromo compound whose `[alpha]_(D)^(25^(@)C)`=30^(@)`, the `[alpha]_(D)^(25^(@)` of the alcohol product is - `6.0^(@)`. Calculate the precentage of racemization :A. `58%`B. `83%`C. `70%`D. `30%` |
| Answer» Correct Answer - D | |
| 65. |
Which of the following compounds will give racemic mixture by `S_(N^(1))` reaction?A. B. C. D. `H_(3)C-underset(CH_(2)-Br)underset(|)(CH)-CH_(3)` |
| Answer» Correct Answer - A::B | |
| 66. |
`R-overset(O)overset(||)C-Cl+ZrarrR-overset(O)overset(||)C-R` The reagent Z is :A. `R_(2)CuLi`B. `R_(2)Cd`C. `(Ph_(3)P)_(3)RhCl`D. `H_(2)-Pd//BaSO_(4)` |
| Answer» Correct Answer - A::B | |
| 67. |
Which of the following is the correct option of reagent for the above conversion ?A. `Mg//Et_(2)O,CH_(3)Cl,Br_(2)//hv,alc.KOH,KMnO_(4)//overset(Θ)OH,triangle`B. `overset(Θ)OH,H_(2)SO_(4)//triangle,O_(3)//Zn,H_(2)O`C. `CH_(3)MgBr,Br_(2)//hv,alc.KOH,KMnO_(4),triangle`D. `Mg//Et_(2)O,CH_(3)Cl,Br_(2)//hv,alc.KOH,O_(3)//Zn,H_(2)O` |
| Answer» Correct Answer - D | |
| 68. |
Which of the following is the correct option of regent for the given conversion ? A. B. C. D. `Cl_(2)//hv,CH_(3)MgBr,Br_(2)//hv,CH_(3)COOH` |
| Answer» Correct Answer - B | |
| 69. |
Which of the following will not give addition reaction with RMgX?A. `CO_(2)`B. `CH_(3)-CH_(2)-Br`C. `SO_(2)`D. `CH_(3)-overset(O)overset(||)C-OH` |
| Answer» Correct Answer - B::D | |
| 70. |
Which of the following combinations give `C_(6)H_(5)-overset(CH_(3))overset(|)underset(CH_(2)CH_(3))underset(|)C-OH?`A. `PhMgBr and" "H_(3)C-overset(O)overset(||)C-CH_(2)CH_(3)`B. `CH_(3)MgBR and" "Ph-overset(O)overset(||)C-CH_(2)CH_(3)`C. `CH_(3)MgBR and" "C_(6)H_(5)-overset(O)overset(||)C-OC_(2)H_(5)`D. `CH_(3)CH_(2)MgBr and" "Ph-overset(O)overset(||)C-CH_(3)` |
| Answer» Correct Answer - A::B::D | |
| 71. |
Which of the following is the strucuture of A?A. B. C. D. |
| Answer» Correct Answer - C | |
| 72. |
Which of the following reactions are correct?A. B. C. D. |
| Answer» Correct Answer - A::B::D | |
| 73. |
Point out the following incorrect Grignard synthesis :A. B. C. D. |
| Answer» Correct Answer - A::C | |
| 74. |
Find the major product of following reaction :A. B. C. D. No reaction |
| Answer» Correct Answer - B | |
| 75. |
`Ph-CH=N-CH_(3)+Ph-CH_(2)MgCloverset(H_(2)O)rarr`A. `Ph-overset(O)overset(||)C-H`B. `Ph-CH_(2)-underset(CH_(2)Ph)underset(|)N-CH_(3)`C. `Ph-underset(H_(3)C-NH)underset(|)(CH)-CH_(2)Ph`D. None of these |
| Answer» Correct Answer - C | |
| 76. |
Major product :A. B. C. D. No reaction |
| Answer» Correct Answer - A | |
| 77. |
Choose the correct among the following statements :A. B. C. D. |
| Answer» Correct Answer - A::C::D | |
| 78. |
Consider the following statements and pick up the correct statements :A. B. C. D. `S_(N^(1))` reaction occurs in polar protic solvent |
| Answer» Correct Answer - A::C::D | |
| 79. |
Which of the following compounds will give syn-elimination reaction ?A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 80. |
There are number of organic compounds including esters, xanthate esters, amine oxides etc., that undergo pyrolytic elimination with heat in the absence of added reagent, either in inert solvent or in the absence of solvent. In general these elimination follow the rate law. Rate `prop[Substrate]` However reaction is different from `E_(1)` elimination by the degree of syn-stereoselectivity that they exhibit. These reactions are also known as `E_(1)` elimination and the degree of syn-stereoselectivity reflect the extent to which they proceed via cyclic transition state. Find the major product of the following reaction : A. B. C. D. None of these |
| Answer» Correct Answer - B | |
| 81. |
There are number of organic compounds including esters, xanthate esters, amine oxides etc., that undergo pyrolytic elimination with heat in the absence of added reagent, either in inert solvent or in the absence of solvent. In general these elimination follow the rate law. Rate `prop[Substrate]` However reaction is different from `E_(1)` elimination by the degree of syn-stereoselectivity that they exhibit. These reactions are also known as `E_(1)` elimination and the degree of syn-stereoselectivity reflect the extent to which they proceed via cyclic transition state. Find the structure of product :A. B. C. D. |
| Answer» Correct Answer - C | |
| 82. |
In the above reaction, maximum Saytzeff product will be obtained where X is :A. `-1`B. `-Cl`C. `Br`D. `-F` |
| Answer» Correct Answer - A | |
| 83. |
Product (Z) is :A. B. C. D. |
| Answer» Correct Answer - B | |
| 84. |
Major product :A. B. C. D. |
| Answer» Correct Answer - C | |
| 85. |
Major Product :A. B. C. D. |
| Answer» Correct Answer - B | |
| 86. |
Consider the following reaction Which of the following products is not expected form ?A. B. C. D. |
| Answer» Correct Answer - D | |
| 87. |
Which of the following products can be obtained by `S_(N^(1))` reaction?A. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 88. |
How many products will be obtained and what is ther relationship between them ?A. 2 and enantiomersB. 3 and all are diastereomersC. 2 and diastereomersD. 3 and all are homomers |
| Answer» Correct Answer - C | |
| 89. |
(X), Product (X) is :A. `H_(3)C-overset(O)overset(||)C-CH_(3)`B. C. D. `H_(3)C-overset(OH)overset(|)underset(CH_(3))underset(|)C-CH_(3)overset` |
| Answer» Correct Answer - D | |
| 90. |
Which of the following compounds will not give `S_(N^(2))` reaction?A. B. `H_(2)C=CH-Cl`C. D. |
| Answer» Correct Answer - A::B::C::D | |
| 91. |
Which of the following compounds will give `S_(N^(1))` reaction?A. `H_(3)C-CH_(2)-Br`B. C. `H_3C-overset(..)underset(..)O-CH_2-Cl`D. |
| Answer» Correct Answer - C::D | |
| 92. |
Identify the major product of the reaction : A. B. C. `H_2C=CH_2`D. |
| Answer» Correct Answer - C | |
| 93. |
Identify the major product Y :A. B. C. D. |
| Answer» Correct Answer - B | |
| 94. |
Find the major product of following reaction :A. B. C. D. No reaction |
| Answer» Correct Answer - C | |
| 95. |
Major product :A. B. C. D. |
| Answer» Correct Answer - A | |
| 96. |
Identify the major product of following reaction :A. B. C. D. |
| Answer» Correct Answer - D | |
| 97. |
Predict the major product of following reaction :A. B. C. D. No reaction |
| Answer» Correct Answer - A | |
| 98. |
Predict the major product of following reaction :A. B. C. D. |
| Answer» Correct Answer - B | |
| 99. |
Aliphatic nucleophilic substitution is mainly of two type `S_(N^(1))" and "S_(N^(2)) . S_(N^(2))` reaction proceed with strong nucleophile in polar aprotic solvent. `3^(@)` halides do not give `S_(N^(2))` reaction. Inverted products are obtained in this reaction and mechanism of reaction occurs through the formation of transition state. `S_(N^(1))` reaction proceed through the formation of carbocation in polar aprotic solvent. Solvent itself acts as nucleophile in this reaction. Racemization takes place in `S_(N^(1))` reaction. Which of the following compounds will give `S_(N^(1))` reaction ?A. `Ph-overset(CH_(3))overset(|)underset(Cl)underset(|)C-CH_(2)CH_(3)`B. `H_(3)C-Cl`C. `H_(3)C-CH_(2)-Br`D. |
| Answer» Correct Answer - A | |
| 100. |
Since, Grignard reagents resemble carbanion, so they are strong nucleophile and strong base. Their most useful nucleophilic reaction is addition to carbonyl group. Arrange the following compounds in decreasing order of nucleophilic addition reaction : A. `RgtPgtSgtQ`B. `PgtQgtRgtS`C. `QgtRgtSgtP`D. `RgtSgtPgtQ` |
| Answer» Correct Answer - A | |