In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.

Method used for separation of mixture of products ( B and C ) obtained in the following reaction is

Regarding the hydrides of group 15 elements $\mathrm{EH}_3(\mathrm{E}=\mathrm{N}, \mathrm{P}, \mathrm{As}, \mathrm{Sb})$, select the correct statement from the following :

A. The stability of hydrides decreases down the group.

B. The basicity of hydrides decreases down the group.

C. The reducing character increases down the group.

D. The boiling point increases down the group.

Choose the correct answer from the options given below :

$$ \text { Given below are two statements for the following reaction sequence. } $$

Statement I : Compound ' $Z$ ' will give yellow precipitate with NaOI .

Statement II : Compound ' Q ' has two different types of ' H ' atoms (aromatic : aliphatic) in the ratio $1: 3$.

In the light of the above statements, choose the correct answer from the options given below :