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Q.

 Conc. HNO3 is yellow coloured liquid due to :

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a

dissolution of NO2 HNO3

b

dissolution of NO in cone. HNO3

c

dissolution of N2O3 3 in cone. HNO3

d

dissolution of N2O cone.HNO3

answer is B.

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Detailed Solution

Slowly oxidising to nitrogen dioxide gives most samples of nitric acid their distinctive yellow colour.

4HNO3→4NO2+2H2O+O2

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