Acid, Base and Salts MCQ question and answer with solution | Chemistry Gk MCQs

Correct Answer: Option C — Acetic acid (CH₃COOH)

The question asks us to identify an organic acid from the given options.

What is an organic acid?

Organic acids are generally carbon-containing acids. Many common organic acids contain the –COOH (carboxyl) group.

Acetic acid (CH₃COOH) is an organic acid because it contains carbon and has the –COOH group. It is commonly found in vinegar and gives vinegar its characteristic sour taste.

Now, let's check the other options:

Option A: Hydrochloric acid (HCl) — It contains no carbon, so it is an inorganic acid.

Option B: Nitric acid (HNO₃) — It contains no carbon, so it is an inorganic acid.

Option C: Acetic acid (CH₃COOH) — It contains carbon and the –COOH group, making it an organic acid. It is found in vinegar.

Option D: Sulphuric acid (H₂SO₄) — It contains no carbon, so it is an inorganic acid.

Easy way to remember: Acetic acid → Vinegar → Organic acid.

Therefore, the correct answer is Option C: Acetic acid (CH₃COOH).

Sulfuric acid (H₂SO₄) is considered one of the most important and widely used acids in various industries. It is involved in the production of fertilizers, detergents, and chemicals, among many other applications. It is also a strong acid with a wide range of uses, making it a basic chemical in the industrial sector.

Key Points:
  >>   H₂SO₄ is essential in the manufacturing of phosphoric acid, which is then used to produce fertilizers.
  >>   It is used in petroleum refining, metal processing, and even in the production of dyes and pharmaceuticals.
  >>   Other acids, like H₂CO₃ (carbonic acid), HNO₃ (nitric acid), and HCl (hydrochloric acid), also have industrial applications, but sulfuric acid is considered the most fundamental in terms of volume and variety of industrial uses.

Thus, H₂SO₄ is the correct answer.