Assertion : Change in colour of the acidic solution of breath is used as a test for drunken driver.
Reason : Change in colour is due to complexation of alcohol with potassium dichromate.

Options

A. if both Assertion and Reason are true and reason is the correct explanation of the assertion.
B. if both assertion and reason are true but reason is not the correct expalanation of the assertion
C. if assertion is true, reason is false
D. both assertion and reason are false statements.

Answer

c

Explanation

Change in colour in due to the oxidation of alcohol with potassium dichromate. Oxidation of alcohols with `K_(2) Cr_(2)O_(7)` in dilute `H_(2)SO_(4)` (organs solution)

`K_(2)Cr_(2)O_(7)` in presence of dilute `H_(2)SO_(4)` acs as an oxidising agent. it is conveted into chromice sulphate which is green in colour.
`underset(("orange"))(K_(2)Cr_(2)O_(7))+4H_(2)SO_(4) to K_(2)SO_(2) +underset(("green"))(Cr_(2)(SO_(4))_(3))+4H_(2)O+3O`