14000+ MCQs World Geography (Oceanography)
Total Questions:- 50
Time:- 30 Minutes
MCQ Pattern
Date:- 16/03/2026
1. Tides are caused by the gravitational pull of the
2. With respect to tidal bores, a phenomena observed at mouth of river, choose the correct statement.
I. It is a wall of water that moves up certain low lying rivers due to incoming tides. II. Rivers flowing into sea, when obstructs the passage of crest of tidal waves, it forms tidal bores.
III. Narrow and low lying coastal rivers with gentle channel gradient is a favourable condition.
3. Which one of the following type of tides is observed at an interval of every 6 months?
4. 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.
5. The average salinity of oceans in the world is
6. The cold current flowing in Indian Ocean is
7. 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.
8. 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.
9. What is the similarity between Milwaukee Deep, Java Trench and Challenger Deep?
11. The Mid Atlantic ridge has a length of about
12. Which of the following currents is located near the coastline of Philippines and China?
13. Which one among the following is not a cause of generation of ocean currents?
14. 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
15. Which one of the following pairs of island and sea/ocean is not correctly matched?
16. Regarding Halocline, choose the correct statement given below.
I. It relates to salinity change only.
II. Pycnoclines normally follows halocline.
III. It is a subtype of chemocline.
17. A tidal phenomenon where the leading edge of incoming tide forms a wave against the direction of river, is known as
18. 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.
20. Which one of the following ocean currents is not a cold ocean current?
22. In the question given below there are two statements labelled as Assertion (A) and Reason (R). In the context of the two, which of the following is correct?
Assertion (A) Seas and Oceans are vast reservoir of food and mineral resources for future.
Reason (R) At present mankind has not been able to develop cost effective technologies for the exploitation of marine resources.
23. The distance between two adjacent crests and troughs of a wave is known as
24. Assertion (A) It is easier to swim in seawater compared to ordinary water. Reason (R) Density of sea-water is higher than that of ordinary water.
25. The Cyprus island is located in
26. Highest density of sea water is recorded at
27. Which one of the following ocean currents is a cold current?
28. Which of the following zone lies just above the Benthic zone?
29. Submarine canyons are formed due to which of the following?
30. Which of the following are cold ocean currents?
I. Humboldt Current
II. Brazil Current
III. Oyashio Current
IV. Canary Current
31. The deepest zones on oceanic basins is
32. Assertion (A) Continental shelves are very useful to man. Reason (R) Marine food comes entirely from continental shelves.
33. The tides whose height are 20 per cent more than normal tides are called
34. 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.
35. 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.
36. Which of the following factors would result in increasing oceanic salinity?
37. The largest coral reef system is located in
38. 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.
39. Identify the correct decreasing order of salts in terms of % in sea water.
40. Waves often change direction as they approach a shoreline, a phenomenon known as
41. Which one among the following is not correct regarding Tsunami?
42. 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.
43. Which of the following factors affects the origin and nature of movement of ocean current?
44. The ocean relief is generally
45. With reference to Ocean Mean Temperature (OMT), which of the following statements is/are correct?
I. OMT is measured up to a depth of 26°C isotherm which is 129 meters in the South-Western Indian Ocean during January to March.
II. OMT collected during January to March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean.
46. 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.
47. The largest island of Arctic Ocean is
48. 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?
49. Which of the following ridges is located in Indian ocean?
50. Which one of the following statements regarding water cycle is correct?