Match List I with List II:

List I (Mixture)		List II (Separation Technique)
A.	$\mathrm{CHCl}_3+\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$	I.	Steam distillation
B.	$\mathrm{C}_6 \mathrm{H}_{14}+\mathrm{C}_5 \mathrm{H}_{12}$	II.	Differential extraction
C.	$\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2+\mathrm{H}_2 \mathrm{O}$	III.	Distillation
D.	$\text { Organic compound in } \mathrm{H}_2 \mathrm{O}$	IV.	Fractional distillation

Maximum number of electrons that can be accommodated in shell with $n=4$ are:

Bond dissociation energy of "E-H" bond of the "$\mathrm{H}_{2} \mathrm{E}$ " hydrides of group 16 elements (given below), follows order.

A. $\mathrm{O}$

B. $\mathrm{S}$

C. Se

D. $\mathrm{Te}$

Choose the correct from the options given below:

The correct order of $\mathrm{pK}_{\mathrm{a}}$ values for the following compounds is: