Identify A and B respectively in the following reaction

$B r - {C H}_{2} - {C H}_{2} - B r E x c e s s A g O A c - ------- \to A H y d r o l y s i s - ----- \to B + 2 A c O H$

1, 2 - Diacetoxy ethane and 1, 2 - Dibromo ethane

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1, 2 - Diacetoxy ethane and Ethylene glycol

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Ethylene glycol and Glycerol

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Ethylene glycol and 1, 2 - Diacetoxy ethane

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Solution

The correct option is C 1, 2 - Diacetoxy ethane and Ethylene glycol
A and B are 1, 2 - Diacetoxy ethane and Ethylene glycol respectively.
1,2-dibromoethane reacts with excess silver oxide/ acetic acid to form 1, 2 - Diacetoxy ethane .
Hydrolysis of 1, 2 - Diacetoxy ethane gives Ethylene glycol.

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