NEET 2022 Question Paper Mock Test

Which of the following $P-V$ curves represents maximum work done?
(1)

Statement I: Primary aliphatic amines react with ${\text{HNO}}_2$ to give unstable diazonium salts.Statement II: Primary aromatic amines react with ${\text{HNO}}_2$ to form diazonium salts which are stable even above $300\text{K}$.

Which amongst the following is incorrect statement?

$$\text{RMgX}+{\text{CO}}_2\stackrel{\text{dry ether}}{\to }Y\stackrel{{\text{H}}_3{\text{O}}^{+}}{\to }\text{RCOOH}$$
What is $Y$ in the above reaction?

Which statement regarding polymers is not correct?