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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Easy

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Analyzing +4 | -1

Assertion : Equivalent weight of

{Cu}

{CuO}

is 63.6 and in

{Cu}_2 {O} \,31.8

.

Reason : Equivalent weight of an element

=\frac{\text { Atomic weight of the element }}{\text { Valency of the element }}

View answer and explanation

Correct option: D

If assertion is false but reason is true.

Option D (If assertion is false but reason is true) is correct because the assertion incorrectly states the equivalent weight of Cu in both CuO and Cu2O, while the reason correctly defines equivalent weight.

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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

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?