IMPORTANT MCQ OF OCEANOGRAPHY PYQS// NTA NET / SET 

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Today I am going to share Some important QUESTION OF OCEANOGRAPHY that has come in past years .
Here those are:-

 The ocean current Benguela is noticed in— 

(A) Pacific Ocean 

(B) Indian Ocean 

(C) Atlantic Ocean 

(D) Arctic Ocean 

2.Atoll is one of the stages of— 

(A) A natural reservoir 

(B) A pressure system 

(C) A coral development 

3.The correct sequence of the Oceans in term of area is—

(A) Indian – Pacific – Arctic – Atlantic

(B) Pacific – Atlantic – Indian – Arctic

(C) Indian – Pacific – Atlantic – Arctic

(D) Arctic – Indian – Atlantic – Pacific

4. Bay of Bengal is a—

(A) Large marine ecosystem

(B) Small marine ecosystem

(C) A subset of small marine ecosystem

(D) A subset of large coastal ecosystem

5.Who had used the concept of evapotranspiration in climate classification ? 

(A) Thornthwaite 

(B) Koppen 

(C) Kendrew 

(D) Austin Miller 

6. Eustatic changes in the sea levels are caused by—

 (A) Ice ages

 (B) Epirogenic movements 

(C) Orogenic movements 

(D) Isostatic changes 

7. Which of the following is a coral island ? 

(A) Tasmania 

(B) Lakshadweep 

(C) Maldives 

(D) Rameswaram 

8.Match List-I with List-II and select the correct answer from the codes given below—

Codes :

  (a) (b) (c) (d) 

(A) 2 3 1 4 

(B) 1 4 2 3 

(C) 3 2 4 1 

(D) 4 1 3 2

9. Assertion (A) : The ocean floors are much younger than continents.

Reason (R) : Owing to their low density and consequent buoyancy,

the ocean floors are not forced down into the mantle in subduction zone.

Codes :

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

(B) Both (A) and (R) are true and (R) is not a correct explanation of (A)

(C) (A) is true, but (R) is false

(D) (A) is false, but (R) is true

10. Consider the following Seas :

1. Red Sea 

2. Black Sea

3. Dead Sea

 4. Baltic Sea

The correct sequence of those seas in descending order of salinity is—

(A) 1, 2, 3, 4

 (B) 2, 1, 4, 3

(C) 4, 2, 3, 1 

(D) 3, 1, 2, 4

 

11. The most common salt in the ocean is

(A) Calcium chloride

(B) Sodium nitrate

(C) Sodium chloride

(D) Calcium nitrate

12. Match List – I with List – II and select the correct answer by using codes given below:

List – I                        List – II

a. Sublimation             i. the energy absorbed is used to give the motion needed the escape the surface.

b. Freezing                  ii. Energy is released

c. Evaporation             iii. Releases 80 cal/gm

d. Condensation          iv. Absorb 680 cal/gm to change the state

Codes:

       a b c d

(A) ii iii iv i

(B) i iii ii iv

(C) iv iii i ii

(D) iii ii iv i

 

13. Pelagic deposits consist of matter derived from algae and are mostly in the form of liquid mud known as

(A) Blue mud

(B) Ooze

(C) Red mud

(D) Coral mud

 

14. The average temperature of the surface water of the oceans is

(A) 22⁰ C

(B) 15^০ C

(C) 26.7⁰ C

(D) 18.6^০ C

14. Which one of the following ocean currents belongs to Indian Ocean?

(A) Canary Current

(B) Antilles Current

(C) Labrador Current

(D) Agulhas Current

 

15.The Western Coast of Australia records higher salinity due to

(A) Ocean currents

(B) Wind direction

(C) Dry weather condition

(D) All the above

 

16.. The highest salinity is found in the

(A) Baltic Sea

(B) Okhotsk Sea

(C) Mediterranean Sea

(D) Red Sea

17. Organic deposits made by living or dead organisms that form rock elevation like a ridge are known as

(A) Corals

(B) Canyons

(C) Reefs

(D) Guyots

18.The cold current flowing along the coast of Chile and Peru is known as

(A) Agulhas

(B) EL-Nino

(C) Humbolt

(D) Canary

 

19. The average difference in the water level between high tide and low tide at a place is referred to as:

(A) Tidal bore

(B) Tidal period

(C) Tidal range

(D) Tidal wave

20.Flat topped sea mounts are known as

(A) Shoals

(B) Reefs

(C) Guyots

(D) Banks

 21. Salinity in water bodies increases with

(A) increase in evaporation and decrease in admixture of fresh water.

(B) decrease in evaporation and increase in admixture of fresh water.

(C) Decrease in evaporation and no change in admixture of fresh water.

(D) Increase in evaporation and increase in admixture of fresh water.

22. Given below are two statements, one labelled as Assertion (A) and other labelled as Reason (R). Select your answer from codes given below:

Assertion (A): The salinity in Dead Sea is very low.www.netugc.com

Reason (R): Dead Sea is located in tropical dry climatic region, where evaporation is high, precipitation is low and here drainage is internal.

Codes:

(A) Both (A) and (R) are right.

(B) Both (A) and (R) are wrong.

(C) (A) is wrong, but (R) is right.

(D) (A) is right, but (R) is wrong.

 

24Surface ocean currents derive their energy from

(A) Salinity

(B) Tectonics

(C) Wind

(D) Tsunamis

25. Especially high and low tides that occur near the times of new and full moons are called

(A) Spring tide

(B) Neap tide

(C) Super tide

(D) Fall tide

26. Darwin’s subsidence theory is related to

(A) Marine terraces

(B) Coral reefs

(C) Cycle of erosion

(D) Tides

Answer: (B)

 

27. Fiord shorelines are formed due to

(A) Submergence of sub aerially eroded coast

(B) Submergence of glaciated coast

(C) Fluvial deposition

(D) Marine erosion

 

28. Tsunamis are produced by

(A) Tides

(B) Cyclones

(C) Sub-marine earthquakes

(D) Shrinking of the earth’s crust

29.Which one of the following sediment deposits covers the largest percentage of the ocean floor?

(A) Terrigenous

(B) Cosmogenous

(C) Biogenous

(D) Hydrogenous

30. Radiolarian Ooze is

(A) Terrigenous Deposits

(B) Neritic Deposits

(C) Pelagic Deposits

(D) Littoral Deposits

31.Anacondas are largely found inwww.netugc.com

(A) Irrawady Basin

(B) Congo Basin

(C) Orinoco Basin

(D) Amazon Basin

 32.Which of the following oceans is spreading due to plate tectonic movement?

(A) Atlantic Ocean

(B) Pacific Ocean

(C) Indian Ocean

(D) Arctic Ocean

33. Match List-I with List-II and choose the correct answer using the codes given:

List – I                                    List - II

(Ocean Currents)                     (Coasts)

(a) Oyasiwo                             1. Western coast of Latin America

(b) Peru                                   2. Kamchatka Peninsula

(c) Alaska                                3. British Columbia

(d) Kurosiwo                           4. Japan

Codes:

(a)        (b)        (c)        (d)

(A)       3          1          2          4

(B)       1          2          3          4

(C)       4          1          3          2

(D)       2          1          3          4

 

35. A reef separated from the main land or inland shore by a deep lagoon is known as

(A) Fringing Reef

(B) Atoll Reef

(C) Barrier Reef

(D) Patch Reef

36. Global change in sea level is caused by

(A) Eustatic change

(B) Isostatic change

(C) Climatic change

(D) Diastrophism

37. The following question has two sets of statements, one labelled as Assertion (A) and the other labelled as (R). Choose your answer from the codes given:

Assertion (A): Western coast of Europe (UK) and Labrador of (North America) are in the same latitude but Western Coast of Europe (UK) remains unfrozen and Labrador remains frozen for nine months.

Reason (R): Gulf Stream (UK) is a warm current and Labrador is a cold current.

Codes:

(A) Both (A) and (R) are true and (R) is not the correct explanation of (A).

(B) Both (A) and (R) are 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.

38. Which one of the following statements about salinity is not correct?

(A) Salinity is directly related to precipitation

(B) There exists a direct relationship between the rate of evaporation and salinity

(C) Low salinity is found near the mouth of a river

(D) The salinity is highest at the tropics and decreases towards poles and equator

39. The origin of the ocean currents is related to

(A) Gravitational force

(B) Winds

(C) Salinity and density

(D) All of the above

2020 GEOGRAPHY 

Who is recognised as the founder of Scientific Marine Meteorology

(1) L.C. King

(2) M.F. Maury

(3) W.M. Davis                                                                                   

(4) F.P. Shepard

18 Identify the processes of heating of ocean water.

(A) Absorption of radiation from the sun

(B) Transformation of kinetic energy

(C) Melting of polar ice

(D) Violation of Ocean laws

Choose the correct answer from the options given below:

(1) (A) and (C) only

(2) (B) and (C) only

(3) (A) and (B) only

(4) (C) and (D) only

Match List I with List II:

List I - Salts in sea water	List II - Amount in sea water (%)
(A) Sodium Chloride	(I) 3.807%
(B) Magnesium Chloride	(II) 27.213%
(C) Magnesium Sulphate	(III) 1.260%
(D) Calcium Sulphate	(IV) 1.658%

 

Choose the correct answer from the options given below:

	A	B	C	D
(1)	II	I	IV	III
(2)	II	I	III	IV
(3)	I	III	IV	II
(4)	I	II	IV	III

 Which of the following is correct sequence from land to sea?

1. Continental Slope, Sea plain, Ocean deeps, Continental Shelf

2. Continental Shelf, Continental Slope, Sea Plain, Ocean deeps

3. Ocean Deeps, Sea plain, continental Slope, Continental Shelf

4. Sea plain, Ocean deeps, continental Slope, continental Shelf

SAYANTANI SINGH , MSC. GEOGRAPHY , B.ED 

GEOGRAPHIA

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