In following two columns :

Question

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Question Explanation:

The question requires matching the given four organic reactions in Column-I with their correct reaction type (Mechanism) in Column-II.

Concept:

This question is based on:

1. Nucleophilic Substitution

2. Elimination Reaction

3. Electrophilic Addition and Carbocation Rearrangement

Solution:

The reactions are as follows:

(a) $C H_{3} C H_{2} B r + H S^{-} ⟶ C H_{3} C H_{2} S H + B r^{-}$ → Nucleophilic substitution (P)

(b) $(C H_{3})_{2} = C H_{2} + H OCl ⟶ (H_{3} C)_{2} C (O H) C H_{2} Cl$ → Electrophilic addition (S)

(c) $C H_{3} C H_{2} B r + O H^{-} ⟶ H_{2} C = C H_{2} + H_{2} O + B r^{-}$ → Elimination reaction (Q)

(d) $(C H_{3})_{3} C - C H_{2} O H + H B r ⟶ (C H_{3})_{2} C (B r) - C H_{2} - C H_{3} + H_{2} O$ → Nucleophilic substitution (P)

Final Answer: Option (B)

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