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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : The s-Block Elements

    Multiple Choice Questions

    91.

    Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is :

    • Mg

    • Ca

    • Sr

    • Be

    Answer
    • 92.

    For the second period elements the correct increasing order of first ionisation enthalpy is:

    • Li < B < Be < C < O < N < F < Ne

    • Li < B < Be < C < N < O < F < Ne

    • Li < Be < B < C < O < N < F < Ne

    • Li < Be < B < C < N < O < F < Ne

    Answer
    • 93.

    Which of the following is an amphoteric hydroxide?

    • Ca(OH)2

    • Mg(OH)2

    • Be(OH)2

    • Sr(OH)2

    Answer
    • 94.

    Which azide is explosive?

    • Ba(N3)2

    • NaN3

    • KN3

    • Mg3N2

    Answer
    • 95.

    Which of the following is soluble in water?

    • Br

    • Sr

    • Mg

    • Ba

    Answer
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