Select which is CORRECT ?

Question

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The question asks to identify the correct reaction among the given options. Let's analyze each option.

Option A: $Z + SOC l_{2} \to Y + o t h er p ro d u c t s$ . This reaction is not standard for the formation of Y (which is likely a chlorinating agent or product from Z).

Option B: $Z + K O H_{a q .} \to X + o t h er p ro d u c t s$ . This represents a hydrolysis reaction, which might be plausible depending on the nature of Z and X.

Option C: $Y + C_{2} H_{5} O H \to X + o t h er p ro d u c t s$ . This suggests Y reacts with ethanol to form X. If Y is a chlorinating agent, this could be a reaction to form an alkyl halide.

Option D: $Z + S O_{2} C l_{2} \to Y + o t h er p ro d u c t s$ . Thionyl chloride ( $SOC l_{2}$ ) and sulfuryl chloride ( $S O_{2} C l_{2}$ ) are both chlorinating agents. Sulfuryl chloride ( $S O_{2} C l_{2}$ ) is used to chlorinate alkanes and other organic compounds, often forming an alkyl chloride (Y) from an alkane (Z) or similar substrate. This reaction is a common method for chlorination.

Without specific definitions for Z, Y, and X, we must infer from common reactions. Sulfuryl chloride ( $S O_{2} C l_{2}$ ) is a known reagent for free radical chlorination, for example, converting an alkane (Z) to an alkyl chloride (Y).

Therefore, option D is the most likely correct reaction in a general chemistry context involving chlorination.

The final answer is $D$

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