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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Medium

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Application +4 | -1

If the mass of neutron is doubled and that of proton is halved, the molecular mass of

\mathrm{H}_2 \mathrm{O}

containing only

\mathrm{H}^1

and

\mathrm{O}^{16}

atoms will

View answer and explanation

Correct option: C

Increase by about

16.67 \%

Option C (Increase by about 16.67 %) is correct because the new molecular mass of H2O increases from 18 to 21, which is approximately a 16.67% increase.

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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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2.24 {~L}

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