Identify from the following species in which $$\mathrm{d}^2 \mathrm{sp}^3$$ hybridization is shown by central atom :

Phenolic group can be identified by a positive:

Match List - I with List - II.

	List - I (Reaction)		List - II (Reagent(s))
(A)		(I)	$$\mathrm{Na_2Cr_2O_7,H_2SO_4}$$
(B)		(II)	(i) $$\mathrm(NaOH)$$, (ii) $$\mathrm{CH_3Cl}$$
(C)		(III)	(i) $$\mathrm{NaOH,CHCl_3}$$, (ii) $$\mathrm{NaOH}$$, (iii) $$\mathrm{HCl}$$
(D)		(IV)	(i) $$\mathrm{NaOH}$$, (ii) $$\mathrm{CO_2}$$, (iii) $$\mathrm{HCl}$$

Choose the correct answer from the options given below :

Which among the following halide/s will not show $$\mathrm{S_N 1}$$ reaction:

(A) $$\mathrm{H}_2 \mathrm{C}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{Cl}$$

(B) $$\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{Cl}$$

(C)

(D)

Choose the most appropriate answer from the options given below :