NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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If two litre of air is passed repeatedly over heated copper and heated Mg till no further reduction in volume takes place, the volume finally obtained will be approximately:

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Correct option: B

20 mL

Option A (200 mL) is correct because oxygen and nitrogen are removed, leaving mostly noble gases and some residual gases.

More Questions from P-BLOCK ELEMENTS

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The source of most of the noble gases is: Which possesses least stable covalent P-H bond? Which gas is filled in electric bulbs/tubes? The correct order of the oxidation states of nitrogen in

NO,\,N{O_2},\,N{O_2}

and

{N_2}{O_3}

is Which of the following is not an acidic oxide? On heating with

\mathrm{NaOH}

solution and zinc,

\mathrm{NaNO}_3

liberates a gas which can also be obtained by: