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Inorganic Chemistry Test - 3

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Inorganic Chemistry Test - 3
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following gases is/are evolved when ammonia reacts with copper oxide?

    Solution

    When ammonia gas is passed over heated copper oxide in a hard glass tube, nitrogen is evolved.

    2NH3 + 3CuO → 3Cu + 3H2O + N2

     

  • Question 2
    1 / -0

    Which of the following is used as a drying agent during purification of ammonia gas?

    Solution

    Calcium oxide is suitable for drying gaseous amines and ammonia.

     

  • Question 3
    1 / -0

    Why is conc. HCl not used in preparation of HNO3?

    Solution

    Concentrated HCl is not used in the preparation of HNO3 because HCl is volatile.

     

  • Question 4
    1 / -0

    Why does HNO3 stain the skin yellow?

    Solution

    HNO3 stains the skin yellow due to the formation of xanthoproteic acid.

     

  • Question 5
    1 / -0

    Which of the following can be used as a drying agent during purification of HCl gas?

    Solution

    Conc. H2SO4 can be used as a drying agent during purification of HCl gas. It removes any water vapour which is present in the gas.

    P2O5, concentrated HNO3 and CaO cannot be used as dehydrating agents because they react with HCl.

     

  • Question 6
    1 / -0

    Which of the following is used to detect the presence of HCl in a given sample?

    Solution

    AgNO3 is used to detect the presence of HCl in a given sample.

     

  • Question 7
    1 / -0

    Which of the following solutions is used to detect the presence of carbon monoxide in the sample of blood?

    Solution

    PdCl2 solution is used to detect the presence of carbon monoxide in the sample of blood.

     

  • Question 8
    1 / -0

    Which of the following is not a use of carbon monoxide?

    Solution

    Carbon monoxide is not used for extinguishing fires because it is a poisonous gas.

     

  • Question 9
    1 / -0

    Which of the following metal carbonates does not produce carbon dioxide on thermal decomposition?

    Solution

    Carbonates of alkali metals have high thermal stability.

    Sodium carbonate is a very stable carbonate, resisting decomposition up to a very high temperature, often till its melting temperature.

    Over and above that temperature, however, it decomposes slowly to produce the metal oxide and carbon dioxide.

     

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