Question

In the reaction, how many electron donating groups are attached to the carbon atom of unsaturated part of the product $B$?

• A. Two
• B. Three
• C. Four
• D. None of these

Answer 1

The correct option is A Two

There is two electron donating groups present at the carbon of unsaturated part of product $B$, i.e $C\equiv C$.

Those groups are $-C{H}_3$ and $H_{3}C-\stackrel{C{H}_3}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-$