hydrosphere & oceanography section 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one among the following best explains the reason for the Eastern and Western boundaries of the Pacific Ocean experiencing frequent earth-quake?

a) These margins coincide with the plate margins

b) The currents of the vast Pacific Ocean continue to dash against the continental margins

c) There are deep ocean trenches along these margins

d) High mountain stretch along the continental margins adjacent to this ocean

Question : 2

Which one of the following pair is not correctly matched?

a) Washington – Potomac

b) Warsaw - Vishtula

c) Belgrade - Danube

d) Lisbon - Tiber

Question : 3

Sargasso Sea is characterized by

a) typical marine vegetation

b) highly saline water

c) very cold water

d) very warm water

Question : 4

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 : 5

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 : 6

Which one of the following is not correctly matched? Islands Ocean

a) Baffin — North Pacific Ocean

b) Tasmaniya — S. Pacific Ocean

c) Greenlands — Arctic Ocean

d) Madagaskar — Indian Ocean