A: Area along the Equator records the highest temperature throughout the year.
R: On the equator, days and nights are equal for the largest part of the year.

• (a) Both A and R are individually true and R is the correct explanation ofA.

• (b) Both A and R are individually true but R is not the correct explanation of A.

• (c) A is true but R is false.

•  (d) A is false but R is true.

A: Commercial fisheries have not developed in tropics.
R: The demand for marine food from low income population is low in the tropics

• (a) Both A and R are individually true and R is the correct explanation of A. 

• (b) Both A and R are individually true but R is not the correct explanation of A.

• (c) A is true but R is false

• (d) A is false but R is true.

A: Lightning thunder and heavy rain accompany volcanic activity.
R: Volcanoes throw water vapour and charged particles in the atmosphere.

• (a) Both A and R are individually true and R is the correct explanation of A.

• (b) Both A and R are individually true but R is not the correct explanation of A.

• (c) A is true but R is false.

• (d) A is false but R is true.

A: Soils in some parts of Punjab, Haryana and Rajasthan are saline.
R: Evaporation exceeds precipitation

• (a) Both A and R are individually true and R is the correct explanation of A.

• (a) Both A and R are individually true and R is the correct explanation of A.

• (c) A is true but R is false.

• (d) A is false but R is true.

A: The monsoons arrive suddenly in India in June.
R: The monsoonal low pressure trough is well-developed over India.

• (a) Both A and R are individually true and R is the correct explanation of A.

• (b) Both A and R are individually true but R is not the correct explanation of A.

• (c) A is true but R is false.

• (d) A is false but R is true.