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

Question

Assertion: Change in colour of acidic solution of potassium dichromate by breath is used to test drunken drivers. Reason: Change in colour is due to complexation of alcohol with potassium dichromate. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Potassium dichromate react with alcohol and the reduction of potassium dichromate takes place and dichromate (orange red) change of

C r^{3 +}

(green)

C r_{2} O_{7}^{2 -} + 14 H^{+} + 6 e^{-} ⟶ 2 C r^{3 +} + 7 H_{2} O

So, the reason is false.

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

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Potassium dichromate react with alcohol and the reduction of potassium dichromate takes place and dichromate (orange red) change of Cr3+ (green) Cr2​O72−​+14H++6e−⟶2Cr3++7H2​O So, the reason is false.

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

Potassium dichromate react with alcohol and the reduction of potassium dichromate takes place and dichromate (orange red) change of $C r^{3 +}$ (green)
$C r_{2} O_{7}^{2 -} + 14 H^{+} + 6 e^{-} ⟶ 2 C r^{3 +} + 7 H_{2} O$
So, the reason is false.