NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Presence of sulphide ion cannot be confirmed by:

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Correct option: A

\mathrm{BaC}{\mathrm{l}_2}

Option A (

BaCl_2

) is correct because barium chloride does not react with sulfide ions to produce a characteristic precipitate or gas that confirms the presence of sulfide ions.

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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: