Discussion
Assertion (A): Dry chlorine can be handled in ordinary steel while wet chlorine cannot.
Reason (R): Moisture allows hydrochloric and hypochlorous acids to form, which attack the metal.
Answer: D
Both are true and the reason gives the chemistry: drying the gas with sulphuric acid before liquefaction is therefore a standard step, and titanium is used where wet chlorine is unavoidable. Sulphuric acid drying towers precede liquefaction.
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