1.

Assertion: Change in colour of acidic solution of potassium dichromate by breath is used to test drunk drivers. Reason: Change in colour is due to the complexation of alcohol with potassium dichromate.

Answer»

If both assertion and REASON are TRUE and the reason is the correct EXPLANATION of the assertion.
if both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.

Solution :Change in colour is due to reduction of dichromate and orange RED dichromate changes to green COLOURED `Cr^(3+)`


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