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Which of the two is lighter : warm air o...

Which of the two is lighter : warm air or cold air ?

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Warm air is lighter than cool air.

Knowledge Check

  • Which of the following gas is lighter than air ?

    A
    HCl
    B
    `H_(2)S`
    C
    `NH_(3)`
    D
    HF

  • Which of the following gas is lighter than air?

    A
    HCI
    B
    `H_2 S`
    C
    `NH_3`
    D
    `HF`

  • Which mixture is lighter than humid air ?

    A
    `N_2+O_2+SO_2`
    B
    `N_2+O_2+CO_2`
    C
    `N_2+O_2+C_2H_6`
    D
    `N_2+O_2+He`

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    When light travels from hot air to cold air, then:

    A monoatomic gas lighter than air is

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