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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Medium

1 of 1

Analyzing +4 | -1

Statement-I: 12 parts by mass of carbon in

\mathrm{CO}

and

\mathrm{CO}_2

molecules combine with 16 and 32 parts by mass of oxygen.

Statement-II: A given compound always contains exactly the same proportion of elements by weight.

View answer and explanation

Correct option: B

Both statement I and II are incorrect

Option B (Both statement I and II are incorrect) is correct because statement I violates the law of multiple proportions, and statement II is the law of definite proportions, but it's incorrectly stated.

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If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of initial and final volumes under the same temperature and pressure would be: How many g are present in one mole of Ag? 8 g of NaOH is dissolved in 18 g of

{H_2}O.

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mol\,\,k{g^{ - 1}})

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2.24 {~L}

{CH}_4

at NTP contains :- One litre of

{CO}_2

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0.5 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4

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0.5 \mathrm{~g}

\mathrm{Cu}(\mathrm{II})