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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation states changes from

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Correct option: B

#ERROR!

Option B (+6 to +3) is correct because during the oxidizing action of potassium dichromate in acidic solution, chromium's oxidation state changes from +6 in dichromate to +3 in the chromium(III) ion.

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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

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0.5 \mathrm{~g}

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

carbonate?