Identify the product obtained when nitro ethane is treated with $\mathrm{Sn}-\mathrm{HCl}$ under ideal conditions.

What is the SI unit of resistivity?

Which of the following is trihydric phenol?

The negation of statement pattern $(\mathrm{p} \wedge \sim \mathrm{q}) \rightarrow(\mathrm{p} \vee \sim \mathrm{q})$ is