Given below are two statements :

Statement I : Sublimation is used for the separation and purification of compounds with low melting point.

Statement II : The boiling point of a liquid increases as the external pressure is reduced. In the light of the above statements,

choose the correct answer from the options given below :

$$ \text { Compound ' } \mathrm{P} \text { ' undergoes the following sequence of reactions : } $$

$$ ' \mathrm{P}^{\prime} \text { is : } $$

$$ \text { Consider the following compounds } $$

$$ \text { Arrange these compounds in the increasing order of reactivity with nitrating mixture. } $$

The statements that are incorrect about the nickel(II) complex of dimethylglyoxime are :

A. It is red in colour.

B. It has a high solubility in water at $\mathrm{pH}=9$.

C. The Ni ion has two unpaired d-electrons.

D. The $\mathrm{N}-\mathrm{Ni}-\mathrm{N}$ bond angle is almost close to $90^{\circ}$.

E. The complex contains four five-membered metallacycles (metal containing rings).

Choose the correct answer from the options given below :