Assertion (A) We exhale only carbon dioxide. Reason (R) Carbon di… - Vidyadip

MCQ

Assertion (A) We exhale only carbon dioxide.
Reason (R) Carbon dioxide turns lime water cloudy.

A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true, but R is not the correct explanation of A
C
A is true, but R is false
✓
A is false, but R is true

✓

Answer

Correct option: D.

A is false, but R is true

(D) A is false, but R is true. A can be corrected as We exhale a mixture of gases containing nitrogen. water vapour together with carbon dioxide.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion (A) & Reason (B) MCQ" from Respiration in Organisms→Respiration in Organisms — all question types→Science STD 7 question papers→Gujarat Board STD 7 question papers→Gujarat Board question paper generator→

Similar questions

Assertion (A): Oxygen is the final product of respiration.
Reason (R): Respiration produces water, carbon dioxide, and energy.

Assertion (A): The stars appear to move in the sky from East to West.
Reason (R): The Earth rotates from West to East.

Assertion (A): The final product of respiration is glucose.
Reason (R): The glucose ultimately gets converted into the starch.

Assertion (A): Science is an ongoing process of discovery.
Reason (R): Science involves asking questions and conducting experiments to understand how the world works.

The following questions consist of two statements-Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.
Assertion (A) When an acid is mixed with a base in any amount, the reaction is termed as neutralisation reaction.
Reason (R) The salt formed during neutralisation reaction can be acidic, basic or neutral.

Assertion (A) The walls of the arteries are thick.
Reason (R) Arteries carry blood at low pressure.

Assertion (A): The liver secretes bile juice.
Reason (R): Bile juice is stored in the small intestine.

Assertion (A): Sugar is a neutral substance.
Reason (R): A sugar solution turns red litmus blue.

Assertion (A): Odometer measures the speed of a car.
Reason (R): Odometer is linked to tyre rotation to track distance.

The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.
Assertion (A) We feel more comfortable in light coloured clothes in the summer.
Reason (R) Light coloured clothes absorb less heat from the sun.