Lesson eLearning

Which of the following materials is best for constructing the walls of Chhotu House to keep it cool in summer?

easy MCQ 1 mark Class 3 · EVS · Chhotu House
  1. Bricks
  2. Mud
  3. Wood
  4. Steel
Answer
Mud

The correct answer is Mud — Thus, mud is the best material.

Step-by-step solution

  1. Identify materials that keep walls cool.
  2. Compare thermal conductivity of bricks, mud, wood and steel.
  3. Mud has the lowest thermal conductivity, so it keeps walls cooler.
  4. Thus, mud is the best material.
Common mistake: Choosing bricks instead of mud

Concept tested: Thermal insulation of wall material

Published · How this solution was prepared and checked

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