14000+ MCQs World Geography (Oceanography)
Total Questions:- 50
Time:- 30 Minutes
MCQ Pattern
Date:- 29/01/2026
1. Assertion (A) On an average, salinity decreases from equator towards the poles in the ocean. Reason (R) The highest salinity in the oceans is observed at the equator.
2. As compared to continental shelf, the continental slope is
3. Which one of the following ocean currents is not a cold ocean current?
4. The Madagascar island is found in
5. Assertion (A) Continental shelves are very useful to man. Reason (R) Marine food comes entirely from continental shelves.
6. The Carlsberg ridge emerged from which of the following latitudes?
7. Consider the following and choose the correct options.
I. Corals grow more rapidly towards sea side.
II. Corals require a firm platform for their growth.
III. Lower salinity limits coral growth.
8. Extensive coral formations develop between 30°N and 30°S especially on the ............ margins of the landmasses.
9. Mariana Trench is located in the ocean floor of
10. Which of the following is true regarding density of ocean waters?
I. Thermal contraction of sea water reduces its density.
II. Role of temperature in controlling density in polar areas is reduced.
III. Increase in pressure increases sea water density.
11. Which one of the following pairs is not correctly matched?
12. Which of the following is true about Benthic zone?
I. Only micro-organisms live in Benthic zone.
II. Benthic zone extends downwards along the surface of continental shelf.
III. Organisms living in Benthic zone are called Benthos.
13. The Mid Atlantic ridge has a length of about
14. Identify the correct statement/s.
I. Littoral deposits generally contains gravels, sand, silt, clay.
II. Terrigeneous deposits are usually deposited at shallow depths.
III. Deep water deposits contain coral mud, volcanic mud.
15. Which one of the following sites does not have coral reef formation?
16. The largest island of Arctic Ocean is
17. Which one of the following is correctly matched?
18. Which of the following statements is true regarding oceanic salinity?
19. Which of the following statements are true?
I. The direction of Canary current is North to South.
II. The direction of Benguela current is South to North.
III. The direction of North Atlantic drift is West to East.
IV. The Direction of California Current is North to South.
20. The current produced by upwelling of cold water off the coast of Chile and Peru is known as
21. Consider the following statements.
I. Ocean currents are large mass of surface water that circulate in regular patterns around the oceans.
II. The planetary winds are probably the dominant influence on the flow of ocean currents.
III. The water of high salinity are denser than the water of low salinity.
IV. A landmass always obstructs and diverts an ocean current.
Which of the statements given above is/are correct?
22. The coral reefs are the marine counterparts of
23. Pelagic zone is one of the most important division of ocean with respect to commercial exploitation. Choose the correct statement.
I. Any water in sea or lake is neither close to bottom nor near the shore can be said to be in pelagic zone.
II. Pelagic life decreases with increasing depth.
III. Demersal zone lies between benthic and pelagic zone.
25. Tides are caused by the gravitational pull of the
26. The tides whose height are 20 per cent more than normal tides are called
28. Which one of the following ocean currents is a cold current?
29. The ideal temperature for development of coral reefs is
30. Deep sea plains are characterised by which of the following deposits?
31. Assertion (A) Even in the deepest trenches more than 6 miles below the surface, the water never freezes. Reason (R) Only the upper layer of ocean waters freezes and acts as an insulator for lower layers.
32. Surface currents in the ocean are primarily caused by
33. Amsterdam St Paul plateau is located between
34. Salinity is higher in which of the following seas or oceans as compared to others?
35. Assertion (A) During the neap tides the high tide is lower and the low tide is higher than usual. Reason (R) The neap tide, unlike the spring tide, occurs on the new Moon instead on the full Moon.
36. In which one of the following oceans the Diamantina Trench situated?
37. Consider the following statements.
I. Ocean currents are the slow-surface movement of water in the same.
II. Ocean currents assist in maintaining the Earth’s heat balance.
III. Ocean currents are set in motion primarily by prevailing winds.
IV. Ocean currents are affected by the configuration of the ocean.
Which of the statements given above are correct?
38. Which one of the following pairs of island and sea/ocean is not correctly matched?
39. The Wyville Thomson ridge is located between
40. Identify the incorrect statement(s).
I. Other things being equal, the differential effect of wave refraction tends to smooth the coastal outline.
II. A wave of translation can be a powerful force of destruction.
III. Waves often change direction as they approach the shore, a phenomenon known as Wave Refraction.
IV. Wave amplitude is one half of the wavelength.
41. Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
42. Identify the odd ones out in relation to the process of upwelling in the ocean?
43. The epipelagic zone extends from the surface till the depth of
44. The Galapagos ridge is found in
45. Which of the following factors would result in increasing oceanic salinity?
46. Which of the following statements relating to tsunami is/are correct? As the tsunamis leave the deep water of the open sea and travel towards shallow water
I. The speed is reduced considerably.
II. They attain enormous height.
III. They appear as a gentle rise and fall of the sea.
47. Which of the following ridges is located in Indian ocean?
48. Which of the following are warm ocean currents?
49. Which of the following are cold ocean currents?
I. Humboldt Current
II. Brazil Current
III. Oyashio Current
IV. Canary Current
50. Thermal heating of oceanic water will result in which of the following impact on density
