UPSC NDA I 2025 General Ability Paper

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Question : 79 of 150

Marks: +1, -0

Which one of the following statements is NOT correct?

Half mole of nitrogen gas is measured 11·2 litre at STP
17 gram of ammonia gas contains 6·022 × 10²³ molecules at STP
22·4 litre of CO₂ gas at STP contains 44 gram of molecules
4 gram of hydrogen gas contains 6·022 × 10²³ molecules

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