JEE Main & Advanced Chemistry The s-Block Elements Question Bank Critical Thinking

  • question_answer Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that [AIEEE 2003]

    A) Concentrated hydrochloric acid emits strongly smelling \[HCl\] gas all the time

    B) Oxygen in air reacts with the emitted \[HCl\] gas to form a cloud of chlorine gas

    C) Strong affinity of \[HCl\] gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke

    D) Due to strong affinity for water, concentrated hydrochloric acid pulls moisture of air towards itself. This moisture forms droplets of water and hence the cloud

    Correct Answer: B

    Solution :

    HCl is a gas.

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