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A substance has no mass. Can we regard i...

A substance has no mass. Can we regard it as matter ?

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Knowledge Check

  • A radioactive substance has a mass of 16 mg and its half life is 25 years. The quantity of substance will remain to be disintegrated in 100 years is

    A
    1 mg
    B
    2 mg
    C
    5 mg
    D
    7 mg

  • A ligand can be regarded as

    A
    Lewis acid
    B
    Bronsted base
    C
    Lewis base
    D
    Bronsted acid

  • the substance which is not regarded as a pollutant?

    A
    `NO_(2)`
    B
    `CO_(2)`
    C
    `O_(3)`
    D
    Hydrocarbons

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    A radioactive substance has 0.1 gm at a particular instant and has an average life of 1 day . The mass of the substance which decays during the 4th day is give by :

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