JEE Main Chemistry question

Concentrated hydrochloric acid, when kept in open air, sometimes produces a cloud of white fumes. The explanation for this is that:

(A)The strong affinity of HCl gas for moisture in air results in the formation of droplets of liquid solution which appears like cloudy smokeCorrect
(B)Due to its strong affinity for water, conc. HCl pulls moisture from the air towards itself; the moisture forms droplets of water, hence the cloud
(C)Conc. HCl emits a strongly smelling gas all the time
(D)Oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas

Answer: (A)

Solution

Escaping HCl gas is strongly hygroscopic; it rapidly combines with water vapour present in humid air, condensing it into

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Question ID VK-146851