Organic Chemistry Multiple Choice Questions and Answers – Reaction Mechanism of Organic Compounds

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Questions
1 Why are aryl halides less reactive towards nucleophilic substitution reactions as compared to alkyl halides?
A The formation of a less stable carbanion
B Longer carbon halogen bond
C The inductive effect
D Sp2-hybridized carbon attached to the halogen

Answer: Sp2-hybridized carbon attached to the halogen
2 What will be the (X) in the below mentioned reaction sequence?

Organic Chemistry

A Organic Chemistry
B Organic Chemistry
C Organic Chemistry
D Organic Chemistry

Answer: (a)
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3 In the following reaction sequence, what will be X?

Organic Chemistry

A Benzoic acid
B Salicylic acid
C Phenol
D Aniline

Answer: Aniline
4 Which of the following is not true for SN1 reactions?
A They occur through a single step concerted reaction
B They are favoured by polar solvents
C Tertiary alkyl halides generally react through this mechanism
D Concentration of nucleophile does not affect the rate of such reactions

Answer: They occur through a single step concerted reaction
5 What is not true about below reaction?

Oraganic Chemistry MCQ

A Major product is given by SN1 reaction
B Through E1 mechanism 3 alkenes are formed
C 3-Methylpentane-3-ol is also formed as one of the product
D Fractional distillation of elimination product will give two fractions

Answer: Fractional distillation of elimination product will give two fractions
6 What will be the total number of isomers formed when 2-methyl butane is subjected to monochlorination?
A 5
B 4
C 3
D 6

Answer: 6
7 The number of substitution products formed when metabromo anisole is treated with KNH2/NH3?
A 1
B 2
C 3
D 4

Answer: 3
8 How many number of pie e- is present in benzene?
A 6
B 7
C 8
D 9

Answer: 7
9 What will be the final product in the below reaction?

Oraganic Chemistry MCQ

Oraganic Chemistry MCQ

A (a)
B (b)
C (c)
D (d)

Answer: (a)
10 Which of the following structures represent the correct major product for the below reaction?

Oraganic Chemistry MCQ

Oraganic Chemistry MCQ

A (a)
B (b)
C (c)
D (d)

Answer: (c)

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