Choose the correct statement. HCl is a strong base. Water is a strong acid. HCO 3 is a strong acid. Ammonia is a strong base.

Out of following none of the statement is correct because,

Hcl is a very strong acid in nature, because it gives proton very easily in an aqueous solution. water is a neutral molecule, it can act both as an acid and a base. HCO3 is a weak acid, not a strong acid. The nature of ammonia is a weak base, not a strong base.

The answer to your question is: H₂CO₃ is a strong acid

Explanation:

HCl is a strong base. This option is wrong because HCl is a strong acid.

Water is a strong acid. Water is a neutral substance it is neither an acid nor a base.

HCO 3 is a strong acid. I can see clearly the molecule but if it were H₂CO₃, it would be carbonic acid which is a strong acid, but if not, this aswer is wrong.

Ammonia is a strong base. This answer is incorrect, Ammonia is a weak base.