Question Bank for UPSC Geography Oceans and Continents / महासागरों और महाद्वीपों Oceanography

Consider the following pairs

A)

1, 2 and 4 only

B)

1, 2 and 3 only

C)

2, 3 and 4 only

D)

1, 2, 3 and 4

View Solution

12)

List I	List II
(Ocean Floor Feature)	(Percentage of Ocean Area)
1. Continental Shelves	7.6
2. Continental Slopes	8.5
3. Abyssal plains	75.9

Which of the above pairs are correctly matched?

A)

3 only

B)

2 and 3 only

C)

1 and 3 only

D)

1,2 and 3

View Solution

13)

1. Seamounts are isolated steep submarine hills

2. The Andaman and Nicobar Islands are parts of seamounts projecting above the sea level.

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

14)

Match list I with list II

A)

Generally continental shelves are wider in front of river mouths

B)

Geologically continental slope is a part of oceanic crust

C)

Beyond the continental shelf and continental slope, there is continental rise

D)

Mid oceanic ridges are the result of spreading of sea floor.

View Solution

15)

List I	List II
(Islands)	(Location)
A. Masshal	1. South Pacific Ocean
B, Tonga	2. North Pacific Ocean
C. Cape Verde	3. North Atlantic Ocean
D. Crozet	4. South Indian Ocean

A)

A-2 B-1 C-3 D-4

B)

A-1 B-2 C-3 D-4

C)

A-3 B-4 C-2 D-1

D)

A-4 B-3 C-1 D-2

View Solution

16)

Match list I with list II and select correct answer using the codes given below

List I	List II
(Ocean Trench)	(Ocean)
A. South Sandwich	1. Southern Ocean
B. Aleutian Trench	2. South Pacific Ocean
C. Kermadec Trench	3. North Pacific
D. Sunda Trench	4. South Indian Ocean

A)

A-1 B-3 C-2 D-4

B)

A-3 B-1 C-4 D-2

C)

A-2 B-4 C-3 D-1

D)

A-4 B-2 C-1 D-3

View Solution

17)

Consider the following names of the oceans

1. Atlantic Ocean

2. Indian Ocean

3. Pacific Ocean

Which of the following sequences is correct with respect to number of deeps located in each ocean?

A)

1, 2 and 3

B)

2, 3 and 1

C)

3, 1 and 2

D)

3, 2 and 1

View Solution

18)

Consider the following statements.

1. Most of the ocean trenches are found in the eastern and western parts of the Pacific Ocean and they are seldom found in the middle ocean region.

2. Most of the trenches are curved, with concave side facing the open ocean.

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

19)

Which of the following combination is wrong? Plateau

A)

Kepmadec Trench lies in South Indian Ocean.

B)

Aleutian Trench is located in the south of the Bering Sea.

C)

Peru Trench has been formed by subduction of Nazca Plate below South American plate.

D)

Sunda Trench lies to the south of equator

View Solution

20)

A)

Telegraph Plateau : Indian Ocean

B)

Cocoa ridge : Pacific Ocean

C)

Wolvis ridge : Atlantic Ocean

D)

Agulhas basin : Indian Ocean

View Solution

21)

Match list I with list II and select the correct answer using the codes given below.

List I	List II
A. Welvis Ridge	1. North Atlantic Ocean
B. Wyville Thomsan Ridge	2. South Atlantic Ocean
C. Clarion Fracture zone	3. Indian Ocean
D. Cocos-Keeling Basin	4. North Pacific Ocean

A)

A-2 B-1 C-3 D-4

B)

A-1 B-2 C-4 D-3

C)

A-3 B-4 C-1 D-2

D)

A-4 B-3 C-2 D-1

View Solution

22)

Consider the following oceans of the world

1. Pacific Ocean

2. North Atlantic Ocean

3. South Atlantic Ocean

4. Indian Ocean

5. Southern Ocean

6. Arctic Ocean

Which is the correct sequence of these oceans according to descending order of their average depths?

A)

1, 2, 3, 4, 5, 6

B)

2, 4, 5, 1, 3, 6

C)

4, 3, 1, 2, 6, 5

D)

3, 4, 2, 1, 5, 6

View Solution

23)

1. Ramanche Gap divides the Mid Pacific Ridge into two parts.

2. Cape Verde Basin lies in North Atlantic Ocean between Mid-Atlantic Ridge and Africa

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

24)

1. Canyons facing see the river mouths are usually long but have gentle gradient

2. Canyons located near islands are quite deep

Which of the following statements is wrong?

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

25)

A)

Seamounts are isolated volcanic hills on the sea floor

B)

Guyots are flat topped hills

C)

Deep sea plains cover the maximum area of the ocean floors

D)

The largest number of islands is found in the Atlantic Ocean

View Solution

26)

1. Yellow Sea lies between China and Japan

2. Adriatic Sea lying between Italy and Greece is an example of deep marginal sea

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

27)

The northern and the southern parts of the Mid Atlantic Ridge are respectively known as:

A)

Wyevale Thomson Ridge lies between British Isles and Ireland.

B)

Walvis Ridge is located along the Brazilian coast

C)

Albatross Plateau is a part of Equatorial Pacific Ocean

D)

Amsterdam St. Paul Plateau lies in South Indian Ocean

View Solution

28)

A)

Dolphin Ridge and Challenger Ridge

B)

Challenger Ridge and Walvis Ridge

C)

Dolphin Ridge and Wyville Thomson ridge

D)

Walvis Ridge and Wyville Thomson Ridge

View Solution

29)

Match List I with List II and find out the correct answer using the codes given below:

List I	List II
(Feature)	(Location)
Bromley Plateau	1. South Atlantic Ocean
B. Socotra-Chagos Ridge	2. North Indian Ocean
C. Cape Verde Basin	3. North Atlantic Ocean
D. Emperor Seamounts	4. North Pacific Ocean

A)

A-1 B-2 C-3 D-4

B)

A-2 B-3 C-4 D-1

C)

A-4 B-2 C-1 D-3

D)

A-3 B-1 C-2 D-4

View Solution

30)

Match list I with list II and find out the correct answer by using the codes given below.

List I (Feature)	List II (Location)
A. Natal Basin	1. S.W. of Madagascar
B. Sierra Leone Basin	2. Between \[{{0}^{o}}\]to\[{{10}^{o}}N\] and \[{{10}^{o}}\]to\[{{20}^{o}}W\]
C. Albatross plateau	3. East Tropical Pacific Ocean
D. Murray seas carp	4. Off the west coast of North America

A)

A-1 B-2 C-3 D-4

B)

A-3 B-4 C-1 D-2

C)

A-2 B-3 C-4 D-1

D)

A4 B-1 C-2 D-3

View Solution

31)

Consider the following statements?

1. Submarine canyons are so called because they resemble river canyons on the continents

2. They look like long V-shaped valleys with steep sides.

3. They have tributaries similar to those of river cut canyons on land

4. Most of the canyons are formed by continental rifting

Which of the above statements are not correct?

A)

1 and 2 only

B)

2 and 3 only

C)

3 and 4 only

D)

None

View Solution

32)

Which of the following statements regarding submarine canyons are wrong?

A)

They tend to have steep side slopes

B)

Most canyons are formal by turbidity currents

C)

There are no tributaries of the submarine canyons

D)

They are similar to youthful river valleys on the land but are much deeper than the river valleys on the land.

View Solution

33)

Consider the following statements regarding submarine canyons:

1. They are largely found in front of large rivers.

2. They are rarely found in islands studded seas or along desert coasts.

3. They are absent along straight coasts.

4. They are commonly found off the coast of North America from Canada to Cape Hatteras.

Which of the above mentioned statements are correct?

A)

1 and 2 only

B)

1, 2 and 3 only

C)

2, 3 and 4 only

D)

1, 2, and 4 only

View Solution

34)

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

List I	List II
(Oceanic Trench)	(Location)
A. Aleutian	1. Indian Ocean
B. Kermadic	2. North Pacific Ocean
C. Sunda	3. South Pacific Ocean
D. S. Sandwich	4. South Atlantic Ocean

A)

A-2 B-4 C-1 D-3

B)

A-2 B-3 C-1 D-4

C)

A-1 B-3 C-2 D-4

D)

A-1 B-4 C-2 D-3

View Solution

35)

The correct sequence of major salts in the ocean waters in descending order with respect to percentage is

A)

Sodium Chloride, Magnesium Chloride, Magnesium Sulphate, Calcium Sulphate

B)

Magnesium Chloride, Magnesium Sulphate, Calcium Sulphate, Sodium Chloride

C)

Sodium Chloride, Calcium Sulphate, Magnesium Sulphate, Magnesium Chloride

D)

Magnesium Sulphate, Calcium Sulphate, Sodium Chloride, Magnesium chloride

View Solution

36)

Salinity of the ocean waters near the equator is low because of

I. Heavy rainfall

II. High rate of evaporation

III. Huge quantities of water brought to oceans by the rivers

A)

I and II are correct

B)

II and III are correct

C)

I and III are correct

D)

I, II and III are correct

View Solution

37)

Consider the following statements regarding salinity of the ocean waters.

1. Salinity near the equator is very low due to heavy rainfall and little evaporation.

2. Salinity near the Tropic of Cancer is high due to huge evaporation and steady trade winds.

3. Salinity in the polar region is very low due to little evaporation and melting of ice.

4. The lowest salinity is found in the Red Sea.

A)

1 and 4 are correct

B)

2 and 4 are correct

C)

3 and 4 are correct

D)

1,2, and 3 are correct

View Solution

38)

Consider the following statements regarding salinity of the ocean waters.

1. The salinity patterns of the surface waters of the Pacific Ocean are influenced largely by wind, rain and evaporation.

2. The water within the belt of calms and variable winds near the equator has lower salinity as compared to those in the trade wind bells.

3. The higher salinity in the open Pacific occurs in the southern tropical belt.

4. The lowest salinities occur in area near the Aleutian Islands.

Which of the following is the correct sequence of seas in decreasing order of salinity?

A)

1 only

B)

1 and 2 only

C)

1, 2 and 3 only

D)

1, 2, 3 and 4

View Solution

39)

A)

Red Sea, Caribbean Sea, Bering Sea, Baltic Sea

B)

Caribbean Sea, Bering Sea, Baltic Sea, Red Sea

C)

Bering Sea, Baltic Sea, Red Sea, Caribbean Sea

D)

Baltic Sea, Red Sea, Caribbean Sea, Bering Sea

View Solution

40)

1. Of all the latitudes, salinity is the maximum at the equator.

2. Within the tropics, salinity of the open oceans is larger than that of the closed areas.

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

41)

1. Lake Van has the highest salinity in the world.

2. Gulf of Bothnia records some of the lowest salinity in the world.

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

42)

Match List I with List II and find out the correct answer using the codes given below

A)

Salinity of the ocean water is directly proportional to the rate of evaporation.

B)

Salinity of the ocean water decreases with the increase in precipitation.

C)

Higher rates of salinity are found at the mouths of big rivers.

D)

Tides and currents bring about changes in salinity.

View Solution

43)

List I	List II
(Sea)	(Salinity)
A. Red Sea	1. 37-41%
B. North Sea	2. 34%
C. Black Sea	3. 17-18%
D. Dead Sea	4. 240%

A)

A-3 B-4 C-1 D-2

B)

A-2 B-3 C-4 D-1

C)

A-4 B-2 C-1 D-3

D)

A-1 B-2 C-3 D-4

View Solution

44)

1. Salinity of the ocean waters generally decreases from the equator towards poles.

2. Tropic of Cancer and Tropic of Capricorn have higher salinity than the equator.

3. Mediterranean Sea has higher salinity than the open Atlantic Ocean.

4. Salinity is low in the polar areas due to influx of melting water.

Which of following statements is not correct?

A)

1 and 2 only

B)

2 and 3 only

C)

3 and 4 only

D)

1, 2, 3 and 4

View Solution

45)

A)

In the North Atlantic Ocean the highest salinity is found off the Labrador coast.

B)

In the South Atlantic Ocean salinity is higher along the western margins as compared to salinity along the eastern margins.

C)

South Indian Ocean has lower salinity than the North Indian Ocean.

D)

Salinity is uniformly low in the Southern Ocean.

View Solution

46)

Examine the following statements and select the correct answer using the codes given below

1. The average salinity of the oceans is 35%

2. Salinity of the Mediterranean Sea decreases from east to west.

3. Salinity of the Red Sea increases from south to north.

4. Salinity of the Persian Gulf increases from its head to the interior.

A)

1 and 2 only

B)

2 and 3 only

C)

1, 2 and 3 only

D)

1,2,3 and 4

View Solution

47)

Consider the following water bodies

Find out the correct sequence of the above water bodies in descending order of salinity by using the following codes.

A)

1, 2, 3 and 4

B)

2, 3, 4 and 1

C)

3, 4, 2 and 1

D)

4, 3, 2 and 1

View Solution

48)

Salinity of the open oceans is maximum in the:

A)

Equatorial regions

B)

Tropical regions

C)

Sub-tropical region

D)

Polar region

View Solution

49)

A)

Temperature of the ocean water increases with depth as we find increase in temperature with increasing depth within the earth.

B)

Temperature differences play a vital role in controlling the movements of the ocean water.

C)

Differential thermal conditions of the ocean water influence the general atmospheric conditions and control the planetary wind belts.

D)

Ocean water temperature has moderating effect on weather conditions of coastal areas.

View Solution

50)

A)

Temperatures of the ocean waters are the highest at the equator and decreases towards the poles.

B)

Diurnal range of ocean water temperature is very small and is often around\[{{1}^{o}}C\].

C)

Annual range of temperature in the northern parts of the Pacific and Atlantic oceans is higher than their southern counterparts.

D)

Range of the water temperature increases with depth.

View Solution

51)

1. The temperature of the ocean water falls with increasing depth but at no depth point, the temperature falls below freezing point.

2. The temperature of the ocean water is almost the same at the sea surface in the Indian Ocean and Red Sea, but at greater depth temperature in Indian Ocean falls more rapidly than in Red Sea.

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

52)

1. Boundary between surface waters and deeper waters is known as thermocline.

2. Temperature above the thermocline layer is lower than that of the layer below thermocline.

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

53)

A)

The rate of decrease of temperature with increasing depth goes on decreasing from equator towards poles.

B)

The change in sea temperature below 2000 m is negligible.

C)

The diurnal and annual range of temperature cease below the depths of 5 fathom and 100 fathoms respectively.

D)

The annual range of temperature is the same for open oceans and closed seas.

View Solution

54)

A)

Density of water increases and temperature of water decreases with increasing depth.

B)

About 90 per cent of the ocean water is found below the thermocline.

C)

West coast of the temperate North Atlantic Ocean has much lower temperature than is east coast

D)

Temperature variations in the northern and southern hemisphere are the same.

View Solution

55)

1. Saline water freezes slowly as compared to fresh water.

2. There is a positive correlation between salinity and density of sea water.

3. Boiling point of water decreases with increase in salinity

4. Salinity of sea water is inversely proportional to evaporation.

1. The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean.

A)

1 and 2

B)

2 and 3

C)

3 and 4

D)

1 and 4

View Solution

56)

Consider the following

2. The annual range of temperature is greater in the Northern Hemisphere than that in the Southern Hemisphere.

Correct statements

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

57)

Match list I with list II and find out the correct answer using the code given below:

List I	List II
A. Wave crest	1. Lowest part of the wave
B. Wave trough	2. Highest part of the wave
C. Wave length	3. Distance between a trough and its neighboring crust
D. Wave height	4. Distance between two consecutive crests or troughs

A)

A-1 B-4 C-2 D-3

B)

A-2 B-1 C-4 D-3

C)

A-4 B-2 C-3 D-1

D)

A-3 B-1 C-4 D-2

View Solution

58)

Which of the following factors does not cause ocean currents?

A)

Prevailing winds

B)

Rotation of the earth

C)

Revolution of the earth

D)

Temperature differences

View Solution

59)

Which of the following factors of ocean current formation is specific to the North Indian Ocean?

A)

Salinity difference

B)

Shape of coasts

C)

Evaporation

D)

Change of seasons

View Solution

60)

1. Ocean currents are the slow-surface movements of water in the ocean.

2. Ocean currents assist in maintaining the Earth's heat balance.

3. Ocean currents are set in motion primarily by prevailing winds.

4. Ocean currents are affected by the configuration of the ocean.

Which of these statements are correct?

A)

1 and 2 only

B)

2, 3 and 4 only

C)

1, 3 and 4 only

D)

1, 2, 3 and 4

View Solution

61)

Which the following statements regarding currents of the North Atlantic Ocean are not correct?

A)

Trade winds maintain fairly steady near North Equatorial current.

B)

Huge quantity of water is accumulated in the Caribbean Sea.

C)

On reaching the American coast, the North Equatorial current of the Atlantic Ocean is divided into Antilles current and Caribbean current.

D)

Florida current is the slowest of all the currents of the North Atlantic Ocean.

View Solution

62)

Which of the following currents is also known as the Humboldt Current?

A)

California Current

B)

Labrador Current

C)

Peru Current

D)

Kuroshio Current

View Solution

63)

Consider the following statements.

1. In the Pacific Ocean there is a seasonal march of the Pacific Equatorial currents to the north of equator in summer and to the south of equator in the winter.

2. Axis of the counter equatorial current remains at the equator throughout the year.

Which one of the following factors is responsible for change in the regular direction of ocean currents in the North Indian Ocean?

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

64)

A)

Indian Ocean is 'half an ocean'.

B)

Indian Ocean has monsoon drift.

C)

Indian Ocean has greater variation in salinity.

D)

Indian Ocean is a land- locked ocean.

View Solution

65)

Currents surrounding the Sargasso Sea are

1. Gulf stream

2. North Atlantic Drift

3. Norwegian current

4. Labrador Current

5. Canaries Current

6. Counter Equatorial current

A)

1, 2, 3, 4 are correct

B)

2, 3, 4, 5 are correct

C)

1, 2, 5 are correct

D)

1, 3, 4, 6 are correct

View Solution

66)

Match List I with List II and find out the correct answer using the codes given below:

List I (Current)	List II (Location)
A. Benguela Current	1. East coast of South America
B. Falkland current	2. West coast of Africa
C. Kuroshio current	3. East court of Japan
D. Gulf Stream	4. East coast of U.S.A.

A)

A-1 B-2 C-4 D-3

B)

A-2 B-1 C-3 D-4

C)

A-4 B-3 C-2 D-1

D)

A-3 B-4 C-1 D-2

View Solution

67)

Which of the following pairs is not correctly matched?

A)

(Current)	(Characteristics)
Gulf Stream	1. Carries heat to western coast of Europe

B)

(Current)	(Characteristics)
Labrador current	2. Carries cold water from Baffin Bay

C)

(Current)	(Characteristics)
West wind Drift	3. Flows in all the southern oceans.

D)

(Current)	(Characteristics)
Humboldt current	4. Warm current along the African coast

View Solution

68)

The important fishing grounds of the world are found in the regions where

A)

Warm and cold atmospheric currents meet.

B)

Rivers drain out large amounts of fresh water into the sea.

C)

Warm and cold oceanic currents meet.

D)

Continental shelf is undulating.

View Solution

69)

Match List I with List II and find out the correct answer by using the codes given below:

(Current)	(Origin)
A. Labrador current	1. Baffin Bay
B. North-East Monsoon Drift	2. Strait of Malacca
C. Kurile current	3. Okhotsk Sea
D. North Atlantic Equatorial Current	4. West coast of Africa

A)

A-3 B-4 C-1 D-2

B)

A-2 B-1 C-4 D-3

C)

A-1 B-2 C-3 D-4

D)

A-4 B-3 C-2 D-1

View Solution

70)

1. Ocean currents have great effect on the temperature of the ocean water.

2. Ocean currents are deeply influenced by local winds.

3. Labrador Current sinks down the below the Gulf Stream and flows as a sub-surface current.

4. Ocean currents are not affected by Carioles force.

Imager Current is a branch of

A)

1 and 2 only

B)

1 and 3 only

C)

3 and 4 only

D)

2 and 4 only

View Solution

71)

A)

Canaries current

B)

Labrador current

C)

North Atlantic current

D)

Beguele current

View Solution

72)

1. Saragossa Sea is a 'gyre' of calm and motionless sea.

2. Saragossa Sea is surrounded by warm currents on all sides.

3. Saragossa Sea has higher salinity than the neighboring sea.

4. Saragossa Sea is not fit for navigation.

A)

1, 2 and 3 only

B)

2, 3 and 4 only

C)

1, 2 and 4 only

D)

1, 3 and 4 only

View Solution

73)

1. Spring tides occur at the time of full moon.

2. Neap tides occur at the time of new moon.

A)

Only 1 is correct

B)

Only 2 is correct

C)

Both 1 and 2 are correct

D)

Neither 1 nor 2 is correct

View Solution

74)

The duirnal tides occur in

1. Gulf of Tonkins and Thailand

2. Java Sea

3. Bismark and Solomon Sea N and E island' of New Guinea

4. Along much of the Pacific coast

A)

Only 1 is incorrect

B)

1 and 2 are incorrect

C)

3 and 4 are incorrect

D)

Only 4 is incorrect

View Solution

75)

Match List I with List II and find out the correct answer by using the codes given below

List I (Theory of Tidal Oragins)	List II (Scholar)
A. Equilibrium Theory	1. Laplace
B. Dynamic Theory	2. William Whewell
C. Progressive wave	3. Newton Theory
D. Stationary wave	4. R.A. Harris Theory

A)

A-1 B-3 C-2 D-4

B)

A-3 B-1 C-2 D-4

C)

A-2 B-4 C-3 D-1

D)

A-4 B-2 C-1 D-3

View Solution

76)

Which is the correct sequence in descending order of tidal range in the Pacific Ocean?

A)

Cape Horn, Yokohama, Honolulu, That

B)

Yokohama, Honolulu, That, Cape Horn

C)

Honolulu, That, Cope Horn, Yokohama

D)

That, Cape Horn, Yokohama, Honolulu

View Solution

77)

Which of the following conditions is not suitable for the occurrence of a tidal bore?

A)

Narrow, low-lying shallow, constrict coastal river with gentle slope

B)

A narrow bay with tapering head

C)

A small tide with wave height less than 2 metres

D)

Decreasing depth of water with increasing distance inland from the coast

View Solution

78)

Consider the following statements: 1. Moon is more effective than the sun for generating tides on the earth. 2. Spring tides are produced by the combined gravitational pull of moon and sun when moon, sun and earth are in the same line. 3. Each day a tide is experienced at the same time Which of the above statements is/are correct?

A)

1 only

B)

1 and 2 only

C)

2 and 3 only

D)

1,2 and 3

View Solution

79)

Which of the following is not the major cause of tsunamis in the ocean?

A)

Atlantic Ocean is the youngest of all the oceans.

B)

Pacific Ocean has larger number of islands than any other ocean of the world.

C)

No part of the mid Atlantic Ridge emerges out of the ocean water.

D)

North Indian Ocean is characterized by seasonal reversal of direction of its currents.

View Solution

80)

A)

Earthquakes

B)

Volcanoes

C)

Landslides

D)

Cyclones

View Solution

81)

Consider the following statements 1. In deep sea, tsunamis travel at very high speeds varying from 500 to 700 km ph. 2. Their speed is further increased when they reach the coast Which of the above statements is/are correct?

A)

1 only

B)

2 only

C)

Both 1 and-2

D)

Neither 1 nor 2

View Solution

82)

Consider the following statements: 1. Tsunamis have very short wave length and high amplitude in the deep sea. 2. As the tsunamis reach the coast, their wave length increases and amplitude decreases. Which of the above statements is/are correct?

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

83)

Consider the following statements 1. Pacific is the most vulnerable ocean with respect to tsunamis. 2. India has developed a perfect tsunami warning system in the Indian Ocean. Which of the above statements is/are correct?

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

84)

Which of the following countries suffered maximum loss of life by the tsunami in the Indian Ocean on 26th December 2004.

A)

India

B)

Sri Lanka

C)

Indonesia

D)

Thailand

View Solution

85)

Examine the following statements and select the correct answer using the codes given below 1. Isotherm of \[{{20}^{o}}C\] determines the pole ward growth of corals. 2. Rise in temperature during the El Nino event can lead to coral bleaching. 3. Corals grow well at greater depths in the sea where sun light cannot reach. 4. Corals thrive well in those ocean waters where salinity varies from 27% to 30% Code:

A)

1,2 and 3 are correct

B)

2, 3 and 4 are correct

C)

1,3 and 4 are correct

D)

1,2 and 4 are correct

View Solution

86)

Consider the following factors.

1. Temperature between \[{{18}^{o}}C\] and \[{{20}^{o}}C\]

2. Upwelling of cold water

3. Salinity above \[{{40}^{o}}\] %o

4. Turbidity

5. Fresh water

6. Submarine Plate forms

Which of the above factors are not suitable for the growth of corals?

A)

1, 2, 3 and 4

B)

3, 4, 5 and 6

C)

2, 3, 4 and 5

D)

1,3, 5 and 6

View Solution

87)

Consider the following statements regarding barrier reefs:

A)

A fringing reef lies close to the shore.

B)

A barrier reef is separated from land by a lagoon.

C)

World's largest barrier reef lies along the coast of New South Wales in Australia.

D)

An atoll is a ring shaped island.

View Solution

88)

1. Barrier reefs are separated from the mainland by a lagoon.

2. Landward slope of a barrier reef is steeper than its seaward slope.

3. Barrier reefs are always found as continuous chain.

4. The surface of barrier reef is composed of boulders, coral debris and sand deposits

A)

1 and 2

B)

2 and 3

C)

3 and 4

D)

1 and 4

View Solution

89)

1. Most of the coral reefs of the world are confined within the tropics.

2. The Great Barrier Reef of Australia is the largest in the world and extends for a distance of about two thousand kilo metres between \[{{9.5}^{o}}\] and \[{{22.5}^{o}}\] south latitudes.

Which of the following have coral reefs?

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

90)

1. Andaman and Nicobar Islands

2. Gulf of Kachch

3. Gulf of Mannar

4. Sunderban

Select the correct answer using the codes given below

A)

1,2 and 3 only

B)

2 and 4 only

C)

1,3 and 4 only

D)

1, 2, 3 and 4

View Solution

91)

Which of the following pairs are correctly matched?

Table I (Theory of origin of coral reefs)	Table II (Propounders)
1. Subsidence Theory	Darwin
2. Standstill Theory	Dana
3. Glacial Theory	Daly

Code:

A)

1 and 2 only

B)

2 and 3 only

C)

1 and 3 only

D)

1, 2 and 3

View Solution

92)

The largest coral reef in the world is found near the coast of which of the following countries

A)

Australia

B)

Cuba

C)

Ghana

D)

Philippines

View Solution

93)

Which of the following pairs are not correctly matched? 1. Blue Mud : Temgenous Deposits 2. Globigermic Ooze : Siliceous Deposits 3. Diatom Ooze : Calcareous Deposits 4. Red clay : Inorganic Deposits Code:

A)

All unconsolidated materials deposited on the ocean floor are known as ocean deposits.

B)

Temgenous deposits have their source over the land areas.

C)

Pelagic deposits are derived from the sea.

D)

Meteoric dust is the main source of ocean deposits,

View Solution

94)

A)

1 and 2

B)

2 and 3

C)

3 and 4

D)

1 and 2

View Solution

95)

Which of the following is the correct sequence of deposits on the continental shelf from coast to deeper sea?

A)

Gravel, sand, sandy mud, mud

B)

Sand, gravel, sandy mud, mud

C)

Sandy mud, mud, sand, gravel

D)

Mud, sandy mud, gravel, sand

View Solution

96)

Consider the following statements with regard to ocean deposits:

1. Organic deposits originate in the ocean itself.

2. Blue mud is the most widely spread of all the muds.

3. Calcareous deposits consist of remains of those animals which have high proportion of lime.

Which of the following statements regarding mangroves is not correct?

A)

1 and 2 only

B)

2 and 3 only

C)

2 and 3 only

D)

1, 2 and 3

View Solution

97)

A)

They are found in low muddy coasts of tropical and subtropical regions.

B)

They can survive both in fresh water and salty sea water

C)

They do not provide any timber wood.

D)

Sundri in the Sundarban delta is a typical example of mangrove vegetation.

View Solution

98)

Consider the following statements.

1. Exclusive economic zone extends to a distance of 200 nautical miles.

2. High seas can be used only by the concerned nation.

Consider the following countries

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

99)

1. Denmark

2. Japan

3. Russian Federation

4. United Kingdom

5. United States of America

Which of the above are the members of the 'Arctic Council'?

A)

1, 2 and 3

B)

2, 3 and 4

C)

1, 4 and 5

D)

1, 3 and 5

View Solution

100)

1. Base line is an imaginary line joining the land projecting towards the sea.

2. Sea water lying between coastline and baseline is known as internal water.

3. Territorial water of a nation extends upto 12 nautical miles from the base line.

4. Oceans outside the exclusive economic zone are considered as high seas.

A)

1 and 2 only

B)

1, 2 and 3 only

C)

2, 3 and 4 only

D)

1, 2, 3 and 4

View Solution

101)

1. Saline sea water which is refined and transformed into fresh water is known as 'manufactured water'

2. All coastal areas of India have sands which contain large quantities of monazite.

Which of the following statements is/are correct?

A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

View Solution

102)

1. Indian Ocean contains the largest deposits of manganese nodules.

2. Arctic Ocean has become a major source of attraction for the countries surrounding this ocean due to its large deposits of valuable minerals.