Answer:

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Explanation:

The compound A is ethyl magnesium bromide ( a grignard reagent) and the compound B is ethane.

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Product 'A' is Phenyl magnesium bromide and 'B' is cyclohexane.

• When bromobenzene is treated with Mg in the presence of dry ether, phenylmagnesium bromide is formed.
• Phenyl magnesium bromide is also known as a Grignard reagent in this case.
• After hydrolysing this product (phenyl magnesium bromide), cyclohexane with MgBr(OH) which is a Grignard reagent is produced.