Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B.

Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$

Assertion A : Aniline on nitration yields ortho, meta & para nitro derivatives of aniline.

Reason $$\mathrm{R}$$ : Nitrating mixture is a strong acidic mixture.

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

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Thin layer chromatography is an adsorption chromatography.

Reason R : A thin layer of silica gel is spread over a glass plate of suitable size in thin layer chromatography which acts as an adsorbent.

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

The formulas of A and B for the following reaction sequence

are