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Chemistry Test ...

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  • Question 1
    4 / -1

    Two oxides of metal contain 27.6℅ and 30℅ oxygen respectively. If formula of first oxide is M3O4, then formula of second oxide is:

  • Question 2
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    5.6 litres of a gas at N.T.P. are found to have a mass of 11 g. The molecular mass of the gas is

  • Question 3
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    The crystalline salt, Na2SO4xH2O on heating loses 55.9% of its weight. The formula of the crystalline salt is

  • Question 4
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    0.5 g of a metal on oxidation gave 0.79 g of its oxide. The equivalent weight of the metal is (approximately)

  • Question 5
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    Air contains nearly 20% oxygen by volume. The volume of air needed for complete combustion of 100 cc of acetylene will be

  • Question 6
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    A solution of 10 ml(M/10) FeSO4 was titrated with KMnO4 solution in acidic medium. The amount of KMnO4 used will be

  • Question 7
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    At S.T.P. the density of CCl4 vapour in g/L will be nearest to

  • Question 8
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    The law of multiple proportions was proposed by

  • Question 9
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    The anode rays were discovered by

  • Question 10
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    Which of the following transitions of electrons in the hydrogen, atom will emit maximum energy ?

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