Assertion A: Houses made of concrete roofs overlaid with foam keep the room hotter during summer. [2024]

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Q.
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Houses made of concrete roofs overlaid with foam keep the room hotter during summer.
Reason R: The layer of foam insulation prohibits heat transfer, as it contains air pockets.
In the light of the above statements, choose the most appropriate answer from the options given below: [2024]

1 A is true but R is false.

2 A is false but R is true.

3 Both A and R are true and R is the correct explanation of A.

4 Both A and R are true but R is not the correct explanation of A.

Ans.
(2)

Houses made of concrete roofs generally keep the room hotter during summer, but the roofs overlaid with foam make the room cooler. As this layer of foam prohibits heat transfer as it contains air pockets. So, assertion is false but reason is true.

Solution

1 A is true but R is false.

2 A is false but R is true.

3 Both A and R are true and R is the correct explanation of A.

4 Both A and R are true but R is not the correct explanation of A.

Ans.
(2)

Houses made of concrete roofs generally keep the room hotter during summer, but the roofs overlaid with foam make the room cooler. As this layer of foam prohibits heat transfer as it contains air pockets. So, assertion is false but reason is true.

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Solution

1 A is true but R is false.

2 A is false but R is true.

3 Both A and R are true and R is the correct explanation of A.

4 Both A and R are true but R is not the correct explanation of A.

Ans. (2) Houses made of concrete roofs generally keep the room hotter during summer, but the roofs overlaid with foam make the room cooler. As this layer of foam prohibits heat transfer as it contains air pockets. So, assertion is false but reason is true.

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Ans.
(2)

Houses made of concrete roofs generally keep the room hotter during summer, but the roofs overlaid with foam make the room cooler. As this layer of foam prohibits heat transfer as it contains air pockets. So, assertion is false but reason is true.