hydrosphere & oceanography section 4 MCQ Questions & Answers Detailed Explanation

Question : 1

The chief fishing grounds of the world occur where cold and warm currents meet. This is because.

1. cold currents are rich in nitrates and phosphates which feed plankton.
2. Such areas cause the water to become well-aerated.
3. the warm current brings the right temperature for marine life.

a) 1, 2, and 3

b) 1, and 2

c) 1 only

d) 2 only

Question : 2

Match the List-I with List-II and select the correct answer from the codes given below: 

a) 2 1 4 3

b) 1 2 3 4

c) 4 3 2 1

d) 3 4 1 2

Question : 3

The surface of Earth covered with water is approximately

a) Three-fifth (3/5)

b) Two-third

c) One-fourth

d) Half

Question : 4

On the planet Earth, most of the fresh water exists as ice caps and glaciers. Out of the remaining fresh water, the largest proportion

a) Exists as soil moisture

b) Exists as ground water

c) is found in atmosphere as moisture and clouds

d) is found in fresh water lakes and rivers

Question : 5

Sargasso is related to the Ocean, that ocean is

a) Southern Atlantic

b) Southern Pacific

c) Northern Pacific

d) Northern Atlantic

Question : 6

Between India and East Asia, the navigation time and distance can be greatly reduced by which of the following?

1. Deepening the Malacca Straits between Malaysia and Indonesia.
2. Opening a new canal between the Gulf of Siam and the Andaman Sea.

a) Neither 1 nor 2

b) Both 1 and 2

c) Only 1

d) Only 2