Question

Which statements about corrosive sublimate $Hg{Cl}_2$ are correct?

• A. It sublimates on heating.
• B. It oxidises stannous chloride.
• C. It is highly poisonous.
• D. It is prepared by heating mercury in chlorine.

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A It sublimates on heating.
B It is highly poisonous.
C It is prepared by heating mercury in chlorine.
D It oxidises stannous chloride.

(A) It sublimates on heating and has corrosive action. Hence, it is known as corrosive sublimate. Thus option A is correct.
(B) It oxidises stannous chloride. It itself is reduced to mercurous chloride and to metallic mercury with excess of stannous chloride. Thus option B is correct.
(C) It is highly poisonous. White of egg is used as antidote. Thus option C is correct.
(D)It is prepared by heating mercury in the current of chlorine. Thus option D is correct.