The diatomaceous earth is used to insulate boilers and stea…

Biology Biological Classification Kingdom–Protista Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

The diatomaceous earth is used to insulate boilers and steam pipes because:-

The wall of diatoms is deposited with calcium

The diatomaceous earth is cheap

It is a good conductor of heat

The wall of diatoms is made of silica

Text Solution

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The correct answer is:

Diatomaceous earth is formed from the silica-rich cell walls (frustules) of diatoms.

Silica is a poor conductor of heat, so it acts as a good insulating material for boilers and steam pipes.

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