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The temperature of an open room of volume 30 m 3 increases from 17°C to 27°C due to the sunshine. The atmospheric pressure in the room remains 1× 10 5 Pa. In n i and n f are the number of molecules in the room before and after heating, the n f – n i will be :

1. – 1.61 × 10 23
2. 1.38 × 10 23
3. 2.5 × 10 25
4. – 2.5 × 10 25 Students may find similar question in CP exercise sheet : [ JEE Advance, Chapter : KTG, Ex.3, Page No.27, Q. No.5 ]

Correct answer: – 2.5 × 10 25 Students may find similar question in CP exercise sheet : [ JEE Advance, Chapter : KTG, Ex.3, Page No.27, Q. No.5 ]

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