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Q.

Statement - I :Solution of Na2CrO4 in water is intensely coloured.
Statement - II :Oxidation state of Cr in Na2CrO4 is +VI

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a

Both statements I and II are correct

b

Statement-I is incorrect and statement-II is correct

c

Both statements I and II are incorrect

d

Statement-I is correct and statement-II is incorrect

answer is A.

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Detailed Solution

Na2​CrO4​ solution in water is yellow in colour, when acidified changes to orange colour (due to the formation of Cr2O2-2 ions).

Na2​CrO4​+H2​SO4​⟶Na2​Cr2​O7​+Na2​SO4​+H2​O

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