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Q.

To keep her soup warm, Paheli wrapped the container, in which it was kept a woollen cloth. Can she apply the same method to keep a glass of cold drink cool?


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a

Yes

b

No

c

Depends on the time of the day

d

None 

answer is A.

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Detailed Solution

Paheli can apply the same method to keep a glass of cold drink cool.
We know that woollen is a thermally insulating material because it conducts heat poorly. As a result, if Paheli wraps the cold drink bottle in a woollen cloth, it will work and maintain the cold drink cool since there will be no heat transfer from the outside atmosphere.
 
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