Assertion : If a strong acid is added to a solution of potassium chromate it changes its colour from yellow to orange.
Reason : The colour change is due to the oxidation of potassium chromate.

Options

A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

C

Explanation

`underset("yellow")(2CrO_4^(2-)) overset(H^(+))(rarr) underset("orange")(Cr_2O_7^(2-))`
`Cr ` in + 6 state.