DEFENCE CT 10: World Geography (Oceanography)

Welcome to your DEFENCE CT 10: World Geography (Oceanography)

Question No. 1

Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R).

Assertion (A): North Sea records a higher salinity in spite of its location in the high latitudes.

Reason (R) : Saline water is brought to the North Sea by North Atlantic Drift.

Read the statements and choose the correct answer using the code given below.

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

B. Both (A) and (R) are 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

Question No. 2

Which of the following connects the continental shelf and the ocean basins?

A. Deep sea plains

B. Seamount

C. Mid oceanic ridges

D. Continental slope

Question No. 3

Which of the following is a marine biome?

A. Pond

B. River

C. Estuary

D. Lake

Question No. 4

The high salinity of the Mediterranean sea is majorly due to

A. low evaporation

B. influx of sea water

C. high evaporation

D. high precipitation

Question No. 5

With reference to Ocean Mean Temperature (OMT), which of the following statements is/are correct?

1. OMT is measured up to a depth of 26°C isotherm which is 129 meters in the south-western Indian Ocean during January-March.

2. OMT collected during January-March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean.

Select the correct answer using the code given below:

A. 1 only

B. 2 only

C. Both 1 and 2

D. Neither 1 nor 2

Question No. 6

What have often nicknamed the "rainforests of the sea"?

A. Beaches

B. Coral Reefs

C. Fjords

D. Mangroves

Question No. 7

7. Match List - I with List - II and select the correct answer using the codes given below-

List - I	List – II
A. Challenger Ridge	1. North Pacific Ocean
B. Albatross Cordillera	2. North Atlantic Ocean
C. Azores island	3. South Atlantic Ocean
D. Kuril island	4. South Pacific Ocean

A. A 3, B 2, C 4, D 1

B. A 3, B 4, C 2, D 1

C. A 4, B 3, C 2, D 1

D. A 2, B 4, C 3, D 1

Question No. 8

Which of the following statements is incorrect?

A. Isotherms are the lines joining places having equal temperature.

B. The isotherms deviate to the north over the Ocean and to the South Over the continent in January.

C. The isotherms are more or less parallel to the latitudes and the temperature variation is more gradual in the Northern hemisphere.

D. None of the above

Question No. 9

Which one of the following is known as a zone of sharp salinity change in the vertical section of ocean?

A. Thermocline

B. Halocline

C. Photic zone

D. Pycnocline

Question No. 10

Which of the following factors affect the temperature distribution on the Earth?

A. Latitudinal distribution and Elevation

B. Effects of land and water

C. Ocean currents and Prevailing air

D. All of these

DEFENCE CT 10: World Geography (Oceanography)

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