Choose the correct alternative from the following : - Assertion (A) : Roughage prevents constipation.
Reason (R) : Roughage adds bulk to the food.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : Carbon monoxide when inhaled causes death.
Reason (R) :
Carbon monoxide combines with haemoglobin.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : In the upper course, the main work of the river is erosion.
Reason (R) : River flows swiftly in the upper course.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : The body of the fish is streamlined.
Reason (R) : The streamlined body helps the fish to cut its way through the water.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : When common salt is kept open, it absorbs moisture from the air.
Reason (R) : Common salt contains magnesium chloride.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.