Home
Class 12
CHEMISTRY
Assertion : Change in colour of the acid...

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.

A

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

B

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

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Change in colour is due to reduction of dichromate and orange red dichromate changes to green coloured `Cr^(3+)`
Promotional Banner

Topper's Solved these Questions

  • ANALYTICAL CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Wet Test for Acid Radical)|26 Videos

  • ANALYTICAL CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Wet Test for Basic Radical)|71 Videos

  • ANALYTICAL CHEMISTRY

    ERRORLESS |Exercise JEE Section (Only One Choice Answer)|36 Videos

  • ALDEHYDES AND KETONES

    ERRORLESS |Exercise JEE Section (JEE (Advanced) 2018) Numeric answer type question|1 Videos

  • BIOMOLECULES AND POLYMER

    ERRORLESS |Exercise Jee section (Jee (Advanced 2018)) (More than one choice correct answer)|1 Videos

Similar Questions

Explore conceptually related problems

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.

The colour of potassium dichromate is due to

Assertion : The aqueous solution of FeCl_(3) is basic in nature. Reason : The colour changes due to the oxidation of potassium chromate.

Assertion : Chamaeleon can change its colour . Reason : It is a fashionable animal .

(a). Assertion (A) is true, Reason (R) is also true, Reason (R) is the correct explanation for assertion (A). (b). Assertion (A) is true, Reason (R) is true, Reason (R) is not the correct explanation for Assertion (A). (c). Assertion (A) is true, Reason (R) is false. (d). Assertion (A) is false, Reason (R) is true. Q. Assertion (A): to a solution of potassium chromate, if a strong acid is added, it changes its colour from yellow to orange. Reason (R): The colour change is due to the change in oxidation state of potassium chromate.

Assertion : Hydra is green coloured. Reason : Green colour is due to the presence of chlorophyll in their body wall.

A solution changes the colour of turmeric indicator from yellow to red . The solution is