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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : The d-And-f-Block Elements

    Multiple Choice Questions

    131.

    For which element the inertness of the electron pair will not be observed? 

    • Sn

    • Fe

    • Pb

    • In

    Answer
    • 132.

    84Rn219 is a member of actinium series. The other member of this series is-

    • 89Ac225

    • 90Th232

    • 15P35

    • 92U235

    Answer
    • 133.

    Which of the following is philosopher's wool ?

    • ZnO

    • HgO

    • Ag2O

    • CuO

    Answer
    • 134.

    Anhydrous ferric chloride is prepared by:

    • dissoving Fe(OH)3 in concentrated HCl

    • dissolving Fe(OH)3 in dilute HCl

    • passing dry HCl overheated iron scrap

    • passing dry Cl2 gas overheated iron scrap

    Answer
    • 135.

    Which one is malachite from the following?

    • Cu(OH)2

    • Fe3O4

    • CuCO3.Cu(OH)2

    • CuFeS2

    Answer
    • 136.

    When H2S gas is passed in a metal sulphate solution in presence of NH4OH, a white precipitate is produced. The metal is identified as:

    • Zn

    • Fe

    • Pb

    • Hg

    Answer
    • 137.

    Composition of azurite mineral is

    • CuCO3.CuO

    • Cu(HCO3)2.Cu(OH)2

    • 2CuCO3.Cu(OH)2

    • CuCO3.2Cu(OH)2

    Answer
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