hydrosphere & oceanography section 7 MCQ Questions & Answers Detailed Explanation

Question : 1

The colour of Yellow Sea is the result of

a) high sulphur content in the bottom rocks.

b) Silt brought by Hwang-HE river.

c) industrial pollution.

d) peculiar types of phytoplankton growing there.

Question : 2

Which of the following is the correct order of current of the South Atlantic Ocean from Equator and back?

1. Benguela
2. Brazil
3. South Atlantic Drift
4. South Equatorial

a) 3, 2, 4, 1

b) 4, 2, 3, 1

c) 1, 4, 2, 3

d) 3, 2, 1, 4

Question : 3

The ocean which touches the Asian and American shores is

a) Pacific

b) Antarctic

c) Atlantic

d) Indian

Question : 4

The strait which separates Asia from North America is

a) Strait of Malacca

b) Strait of Gibralter

c) Berring strait

d) Palk strait

Question : 5

Which of the following factors influence ocean currents?

1. Rotation of the Earth
2. Air pressure and wind
3. Ocean water density
4. Revolution of the Earth

a) 2, 3 and 4

b) 1 and 4

c) 1 and 2

d) 1, 2 and 3

Question : 6

Syr and Amu rivers fall into

a) Aral Sea

b) Baltic Sea

c) Caspian Sea

d) Black Sea