Question

Which of the following is used as a foaming agent in extinguishers?

• A. Ammonium hydroxide
• B. Magnesium hydroxide
• C. Aluminum hydroxide
• D. Potassium hydroxide

Answer 1

The correct option is C

Aluminum hydroxide

Explanation of the correct options:

The correct option is option C.

When Aluminum hydroxide is heated, it produces water vapor.

Hence, Aluminum hydroxide ($\mathrm{Al}{\left(\mathrm{OH}\right)}_3$) is used in making fire extinguishers.

Explanation of the incorrect options :

Option A: Ammonium hydroxide $\left({\mathrm{NH}}_4\mathrm{OH}\right)$ is used as a cleaning agent, it can also be used in the making of sanitizers.

Option B: Magnesium hydroxide $\mathrm{Mg}{\left(\mathrm{OH}\right)}_2$ is used in making antacid, also called the milk of magnesia.

Option D: Potassium hydroxide $\mathrm{KOH}$ is used in making hair removal creams and shaving gels.

Hence, Option C is correct.