14000+ MCQs World Geography (Oceanography)
Total Questions:- 50
Time:- 30 Minutes
MCQ Pattern
Date:- 16/03/2026
1. Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
2. Waves often change direction as they approach a shoreline, a phenomenon known as
3. The Carlsberg ridge emerged from which of the following latitudes?
5. 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.
6. Which one of the following does the ‘West Wind Drift’ belong to?
8. The time it takes for the crests (or troughs) of two successive waves to pass a given point is known as the
9. The Madagascar island is found in
10. A tidal phenomenon where the leading edge of incoming tide forms a wave against the direction of river, is known as
11. Which one of the following ocean currents is a cold current?
12. Which of the following conditions hinders the development of corals?
13. Which one among the following sequences of water bodies, from lower to higher salinity concentration, is correct?
14. Amsterdam St Paul plateau is located between
15. The Gulf Stream is the warm ocean current. It is moving along the East of North America up to 40°N, where it meets with Labrador current, which is cold current. This meeting of warm and cold ocean current is helping for the
16. Assertion (A) Despite low evaporation and stable stratification of the atmosphere, salinity is high in Polar Regions. Reason (R) Sea water freezes leaving the remaining water saline than before.
17. Mariana Trench is located in the ocean floor of
18. 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.
19. The Gulf Stream is a poleward flowing current in the Atlantic Ocean. Which one of the following statements with regard to this is not correct?
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. With respect to thermocline, choose the correct statement.
I. It is the Layer in which temperature changes more rapidly than it does in layers above and below.
II. It depends upon season, latitude and turbulent mixing by wind.
III. It may be semi-permanent feature of body of water in which they occur.
23. Which one of the following type of tides is observed at an interval of every 6 months?
24. Which of the following are warm ocean currents?
25. Which among the following statements about the North Atlantic Drift is/are correct?
I. It keeps the West Coast of Northern Europe ice free.
II. It is responsible for the warm air mass which interacts with the cold air mass from the Polar region and causes rainfall in Western Europe.
III. It meets the Labrador current near Vancouver island and causes dense fog.
26. Which of the following are the necessary conditions for the growth of coral reefs?
I. Photic conditions.
II. Clean and sediment-free water.
III. Sea salinity of 6%.
IV. Tropical sea water with temperature of 20°C to 21°C.
Select the correct answer using the codes given below.
27. Extensive coral formations develop between 30°N and 30°S especially on the ............ margins of the landmasses.
28. Which of the following is true regarding oceanic surface temperature?
I. The temperature of ocean’s surface decreased from poles towards equator.
II. The temperature of ocean water varies in Northern and Southern hemisphere.
III. The Isotherms are regular in the Southern hemisphere over oceanic surface.
29. Consider the following statements.
I. The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean.
II. The annual range of temperature is greater in the Northern hemisphere than that in the Southern hemisphere.
Which of the statements given above is/are correct?
30. The Newfoundland island is located in
31. Identify the correct decreasing order of salts in terms of % in sea water.
33. Which of the following current flows Northward to feed the South Equatorial Current?
34. Identify the odd ones out in relation to the process of upwelling in the ocean?
35. Consider the following statements and choose the correct one.
I. Density is lowest in the photic zone.
II. Pycnocline layer represents the zone of rapidly changing sea water density.
III. Density is highest in polar areas.
36. Statement I Tsunami is small in open ocean yet may be over 30 m high when it reaches a coastline. Statement II Tsunamis have long wavelength and they travel across the open ocean at high speed. As they approach shore, the wavelength decreases and the wave height increases.
37. Which of the following ridges is located in Indian ocean?
38. In which ocean is the Kamchataka current found?
39. Which of the following zone lies just above the Benthic zone?
40. In which one of the following oceans the Diamantina Trench situated?
41. Which one of the following pairs of island and sea/ocean is not correctly matched?
42. The mid-atlantic ridge is a zone of
43. The Galapagos ridge is found in
44. What percentage of world’s freshwater is stored as glacial ice?
45. The coral reefs are the marine counterparts of
46. Assertion (A) Water in an open pond remains cool even on a hot summery day. Reason (R) Water on heating evaporates and heat energy gets converted into latent heat.
47. Which one of the following sites does not have coral reef formation?
48. Which of the following theories of the origin of tides is not correctly matched?
49. Tsunamis are not caused by
50. Submarine canyons are formed due to which of the following?
