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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Medium

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Application +4 | -1

What volume of oxygen gas at NTP is necessary for complete combustion of

20 \mathrm{~L}

of propane measured at

0^{\circ} \mathrm{C}

and

760 \mathrm{~mm}

pressure?

View answer and explanation

Correct option: C

99.93 \mathrm{~L}

Option C (99.93 L) is correct because it is the volume of oxygen gas calculated using the stoichiometry of the combustion reaction and the ideal gas law.

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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.

Mole fraction of NaOH in solution and molality (in

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

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2.24 {~L}

{CH}_4

at NTP contains :- One litre of

{CO}_2

is passed through red hot coke. The volume becomes 1.4 litres at same temperature and pressure. The composition of products is How many millilitre of

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

are needed to dissolve

0.5 \mathrm{~g}

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

carbonate?