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  • Question 1
    4 / -1

    A certain gas takes three times as long to effuse out as helium. Its molecular mass will be :

  • Question 2
    4 / -1

    In order to increase the volume of a gas by 10%, the pressure of the gas should be

  • Question 3
    4 / -1

    Diffusion of helium gas is four times faster, than

  • Question 4
    4 / -1

    A 4 : 1 mixture of helium and methane is contained in vessel at 10 bar pressure. Due to a hole in the vessel, the gas mixture leaks out. The composition of mixture effusing out initially is

  • Question 5
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    The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is

  • Question 6
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    Dalton's law of partial pressure is applicable to which one of the following systems?

  • Question 7
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    Dalton's law of partial pressure is not applicable to

  • Question 8
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    A certain mass of a gas occupies a volume of 2 L at STP. To what temperature the gas must be heated to double its volume, keeping the pressure constant?

  • Question 9
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    Gas equation pV = nRT is obeyed by ideal gas in

  • Question 10
    4 / -1

    The density of O2 is 16 at NTP. At what temperature its density will be 14 ? Consider that the pressure remains constant, at

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