Which of the following reactions depict the nucleophilic substitution of $C_{2} H_{5} B r$ ?

C_{2} H_{5} B r + C_{2} H_{5} S N a ⟶ C_{2} H_{5} S C_{2} H_{5} + N a B r

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C_{2} H_{5} B r N a + C_{2} H_{5} O H ⟶ C_{2} H_{6} + H B r

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C_{2} H_{5} B r + A g C N ⟶ C_{2} H_{5} N C + A g B r

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C_{2} H_{5} B r + K O H ⟶ C_{2} H_{5} O H + K B r

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Solution

The correct options are
A $C_{2} H_{5} B r + C_{2} H_{5} S N a ⟶ C_{2} H_{5} S C_{2} H_{5} + N a B r$
C $C_{2} H_{5} B r + A g C N ⟶ C_{2} H_{5} N C + A g B r$
D $C_{2} H_{5} B r + K O H ⟶ C_{2} H_{5} O H + K B r$
The following reactions depict the nucleophilic substitution of $C_{2} H_{5} B r$ . In these reactions, bromide ion is substituted with suitable nucleophile.
(A) $C_{2} H_{5} B r + C_{2} H_{5} S N a ⟶ C_{2} H_{5} S C_{2} H_{5} + N a B r$
(C) $C_{2} H_{5} B r + A g C N ⟶ C_{2} H_{5} N C + A g B r$
(D) $C_{2} H_{5} B r + K O H ⟶ C_{2} H_{5} O H + K B r$
Following reaction is not an example of nucleophilic substitution. It is an example of reduction of alkyl halides.
(B) $C_{2} H_{5} B r N a + C_{2} H_{5} O H ⟶ C_{2} H_{6} + H B r$

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