alleryStart learning →Dry HCl gas does not turn dry blue litmus red because it
Areacts fully with the paper
Bbehaves as a strong base
Cdoes not release hydrogen ions
Dturns into a neutral gas
Answer & Solution
Correct answer: C. does not release hydrogen ions
1. Acidic behaviour needs H+ (hydronium) ions, which form only in water.
2. Dry HCl gas has no water, so it cannot dissociate into ions.
3. With no H+ released, dry litmus stays blue; wet litmus turns red.
_Source: AP/TS SCERT Class 10 Physical Science, "Acids, Bases and Salts"_
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