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Chemistry Test 164
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Chemistry Test 164

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  • Question 1/10
    4 / -1

    For following elements IE1 drops abruptly (Ga, In and Tl). This is due to

    Solutions

     

  • Question 2/10
    4 / -1

    The elements that can form interstitial hydrides are

    Solutions

    Transition metals form interstitial hydrides when exposed to hydrogen. For example: Palladium absorbs hydrogen and forms palladium hydride

     

  • Question 3/10
    4 / -1

    Considering the elements, B, C, N, F and Si, the correct order of their non-metallic character is

    Solutions

     

  • Question 4/10
    4 / -1

    The solubility product of CuS, CdS and HgS are  respectively. The solubility of these sulphides are in the order

    Solutions

    Greater the solubility product, the greater is the solubility. Hence, the correct solubility order of these sulphides will be : CuS> CdS> HgS

     

  • Question 5/10
    4 / -1

    During the process of electrolytic refining of copper, some metals present as impurity settle as “anode mud”. These are

    Solutions

    In the electrolytic refining of copper, the more electropositive impurities like Fe, Zn, Ni, Co etc., dissolve in the solution and less electropositive impurities such as Ag, Au and Pt collect below the anode in the form of anodic mud.

     

  • Question 6/10
    4 / -1

    The process which is related with the removal of sulphur present in the ore by heating it in the air is

    Solutions

    Roasting is a process in metallurgy in which a sulphide ore is heated in air the process may convert a metal sulphide to a metal oxide or to a free metal.

     

  • Question 7/10
    4 / -1

    Temperature at which the equilibrium water vapour pressure is 1.00 bar, is

    Solutions

     

  • Question 8/10
    4 / -1

    The element which forms oxide in all the oxidation states from +1 to +5 is

    Solutions

     

  • Question 9/10
    4 / -1

    Which of the following does not give oxygen on heating?

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  • Question 10/10
    4 / -1

    A colourless salt gives violet colour to bunsen flame and also turns moistured litmus paper blue. It is

    Solutions

     

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