Question

Assertion (A): Below the earth’s crust lies the mantle which is 2,900 km thick.

Reason (R): Mantle lies between the crust and the core.

Options

• Both A and R are true and R is the correct reason for A.

• Both A and R are true but R is not the correct reason for A.

• A is true and R is false.

• A is false and R is true.

Answer 1

Both A and R are true and R is the correct reason for A.

Explanation:

The mantle lies directly below the Earth’s crust and extends up to about 2,900 km in thickness. It is positioned between the Earth’s crust and the core, making the reason (R) a correct explanation for the assertion (A).