CH₂=CH₂+Br₂→X→^aq KOHZZ is

The reaction sequence involves the following steps:

1. Reaction of ethene (CH₂=CH₂) with bromine (Br₂):

   Ethene undergoes an addition reaction with bromine to form 1,2-dibromoethane (X).

2. Reaction of 1,2-dibromoethane with aqueous KOH:

   Aqueous KOH causes a nucleophilic substitution, where the bromine atoms are replaced by hydroxyl groups (-OH), leading to the formation of ethylene glycol (B).

Reaction Steps

1. Step 1: Addition Reaction

   CH₂=CH₂ + Br₂ → BrCH₂-CH₂Br (1,2-dibromoethane, X)

2. Step 2: Nucleophilic Substitution

   BrCH₂-CH₂Br + 2KOH (aq) → HOCH₂-CH₂OH + 2KBr (ethylene glycol, Z)

Explanation for Correct Option (B - Glycol)

The intermediate 1,2-dibromoethane reacts with aqueous KOH, replacing both bromine atoms with hydroxyl groups (-OH). The final product is ethylene glycol (HOCH₂-CH₂OH).

Thus, the correct answer is B) Glycol.