Question

12.
Assertion-speed of a body can be negative.
Reason - If the body is moving in the opposite direction of positive motion, then its speed is
negative,

Assertion if the displacement of the body is zero the distance covered by it may not be zero.
Reason-displacement is a vector quantity and distance is a scalar quantity.

Assertion-blood is a fluid connective tissue.
Reason- the plasma in the blood is mostly water.

Assertion the inner mitochondrial membrane is highly folded.
Reason- to increase the surface area for ATP synthesis.

Assertion- a molecule of a compound has atoms of different elements.
Reason- a compound is a pure substance, .​

Answer 1

1. Both assertion and reason are wrong

2. Both assertion and reason are correct and reason is the correct explanation of Assertion.

3. Both assertion and reason are correct and reason is the correct explanation of Assertion.

4. Both assertion and reason are correct and reason is the correct explanation of Assertion.

5. Assertion is correct but reason is wrong.