Question

Name an acid used for removing ink stains.

• A. Oxalic acid
• B. Acetic acid
• C. Formic acid
• D. Malic acid

Answer 1

The correct option is A

Oxalic acid

A: Oxalic acid

1. Several types of chemicals are used in the removal of ink stains from the clothes.
2. The type of solvent use has a tendency to convert insoluble ions into soluble ions.
3. Oxalic acid is one of them and is used as a solvent to remove dust particles.
4. It can also be used for removing the rust particle as well.
5. Hence option A is correct. Oxalic acid is used for removing ink stains.

B: Acetic acid

1. Acetic acid is used as a laboratory agent, and is also helpful in making medicines.
2. It can also be used as vinegar, in production of dyes and perfumes, cellulose etc.
3. No such cleansing property is found in it, hence option B is incorrect.

C: Formic acid

1. Formic acid is used as a preservative.
2. In livestock feed it can also work as antibacterial agent, hence option C is incorrect.

D: Malic acid

1. Malic acid is found in citrous fruits as well as in wines.
2. It can also be used in making medicines, hence option D is incorrect.