Which from following proteins acts as an enzyme to break protein to $\alpha$-amino acid?

Identify the orbital having highest energy from following:

A metal crystallises in bcc structure with edge length $4 \times 10^{-8}$. If density of unit cell is $10 \mathrm{~g} \mathrm{~cm}^{-3}$. What is its molar mass?

Identify product 'B' in following reaction