Hydrides of Group 16

Q.

$B+H_{2}S{O}_4\to A+S{O}_2$

$B+HN{O}_3\to A+N{O}_{2}A$ is

1. H₃BO₃

2. H₃BO₂

3. H₃BO

4. 

Q. $H_{2}O$ is volatile than $H_{2}Te$ but $H_{2}Te$ is covalent than $H_{2}O$.

1. less
2. more
3. same
4. simillar