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     EduGorilla 
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    A mixture of N2 and O2 in the ratio 4 : 1 by volume is heated in an open mouthed flask from 27oC to 127oC. Which of the following statements is/are true?

    Options :-

    1. Mole fraction of nitrogen in the final mixture in the flask at 127oC is 0.8.
    2. Fraction of the original mixture that remains in the flask is 1.75.
    3. Molar ratio of nitrogen and oxygen becomes 3 : 1.
    4. All of the above
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