Question

Which substance when used with butter having butyric acid can cure acidity?
(A) Lime water
(B) Soda water
(C) Calcium carbonate
(D) Lime juice

Answer 1

Hint:To answer this question we must know about the acidic and basic nature of substances. Antacids are the substances which help to counter the effect of acids in our body. They contain mild bases which react with the acid in our stomach to produce salts. This relieves us from the burning sensation and acidity.

Complete step by step solution:
> Let’s look at the answer to this question:
Lime juice is prepared from the fruit of lime. It is an acidic drink. It contains majorly citric acid. It also contains succinic acid and malic acid. These two acids are responsible for the differentiating taste of lime juice. Since it is an acid it will not neutralize the acids already present in the body. So, option (D) is correct.
> Soda water is also called carbonated water. It contains dissolved carbon dioxide under very high pressure. Since, carbon dioxide is acidic in nature. Therefore soda water is also acidic in nature. Hence, it will not reduce acidity. So, option (B) is incorrect.
> Lime water is the dilute aqueous solution of calcium hydroxide. Calcium hydroxide is a strong base. Its dilute solution can be used to cure acidity as it will neutralize the acids present in the stomach. So, option (A) is the correct answer.
> Calcium carbonate is a salt of a strong base and a weak acid. It is a salt and will not neutralize the acids present in the body. So, option (c) is also incorrect.
Hence, the answer to the given question is option (A).

Note: Students can get confused between lime water and lime juice. Lime water is a base while lime juice is an acid. Lime water is a dilute aqueous solution of calcium hydroxide while lime juice contains citric acid.