UPSC Geography Oceans and Continents / महासागरों और महाद्वीपों Question Bank

done Ecology of Oceans Total Questions - 30

• question_answer1)
  The average temperature of the oceans is about:
  A)
  \[{{4}^{o}}C\] done clear
  B)
  \[{{6}^{o}}C\] done clear
  C)
  \[{{8}^{o}}C\]                       done clear
  D)
  \[{{10}^{o}}C\] done clear
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• question_answer2)
  The widest continental-shelf is found in the:
  A)
  Antarctic Ocean              done clear
  B)
  Arctic Ocean done clear
  C)
  Atlantic Ocean               done clear
  D)
  Indian Ocean done clear
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• question_answer3)
  Continental margins include:
  A)
  Continental Shelf and Submarine Canyons. done clear
  B)
  Continental Shelf and Continental Slope. done clear
  C)
  Continental Shelf, Continental Slope and Continental Rise. done clear
  D)
  Continental Shelf and Continental Rise. done clear
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• question_answer4)
  The highest annual range of temperature is recorded in the:
  A)
  North Atlantic Ocean  done clear
  B)
  North Pacific Ocean done clear
  C)
  South Atlantic Ocean          done clear
  D)
  South Pacific Ocean done clear
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• question_answer5)
  The highest salinity of the oceans is found between:
  A)
  \[{{10}^{o}}\] to \[{{20}^{o}}\] N. latitudes           done clear
  B)
  \[{{20}^{o}}\]to \[{{30}^{o}}\] N. Lat. done clear
  C)
  \[{{30}^{o}}\] to \[{{40}^{o}}\] N. Lat.               done clear
  D)
  \[{{10}^{o}}\]to \[{{20}^{o}}\] S. lat. done clear
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• question_answer6)
  The highest temperature is recorded in the:
  A)
  Gulf of Khambat              done clear
  B)
  Gulf of Mannar done clear
  C)
  Gulf of Martaban            done clear
  D)
  Gulf of Persia done clear
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• question_answer7)
  Which one of the following has the highest salinity?
  A)
  Caspian Sea done clear
  B)
  Dead Sea done clear
  C)
  Sambhar Lake             done clear
  D)
  Van Lake done clear
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• question_answer8)
  Out of the following, the highest salinity of the oceans is found in the:
  A)
  Red Sea done clear
  B)
  Mediterranean Sea done clear
  C)
  Caribbean Sea                done clear
  D)
  Black Sea done clear
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• question_answer9)
  In case the ice-sheet of Antarctica melts completely, the sea-level of the world oceans will rise by about:
  A)
  40 metres         done clear
  B)
  60 metres done clear
  C)
  80 metres                     done clear
  D)
  100 metres done clear
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• question_answer10)
  Consider the following statements and select the correct answer using the code given below:

  1. The solids dissolved in seawater changes its thermal characteristics.

  2. The solids dissolved in water lowers its heat capacity by 4 %.

  3. Only \[0.96\]calories of heat energy is required to raise the temperature of sea-water by \[{{1}^{o}}C\]

  4. The saltier the water, lower the freezing point.

  A)
  1, 2 and 3 are correct    done clear
  B)
  1, 2 and 4 are done clear
  C)
  1, 2, 3 and 4 are correct   done clear
  D)
  2, 3 and 4 are correct done clear
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• question_answer11)
  Consider the following statements about eustatic change and select the correct answer using the code given below:

  1. A rise or fall of sea level is known as eustatic change.

  2. Eustatic change is the result of tidal waves.

  3. Eustatic change is caused by earthquake waves.

  4. Eustatic change is caused by climatic change.

  A)
  1 and 2 are correct        done clear
  B)
  1 and 3 are correct done clear
  C)
  1, 2, 3 and 4 are correct  done clear
  D)
  1 and 4 are correct done clear
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• question_answer12)
  Which one of the following countries is contributing significantly in the protection of coral formations?                             
  A)
  Australia          done clear
  B)
  Israel done clear
  C)
  U.K.                             done clear
  D)
  U.S. done clear
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• question_answer13)
  Coral formations are not found in
  A)
  Andaman and Nicobar Island done clear
  B)
  Lakshadweep Islands done clear
  C)
  Rann of Kachchh Islands done clear
  D)
  Sundarban Islands done clear
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• question_answer14)
  Consider the following statements and select the correct answer using the code given below

  1. There is an inverse relationship between the salinity and temperature of oceans.

  2. Inversion of temperature in oceans is found in the lower latitudes.

  A)
  Only 1 is correct           done clear
  B)
  Only 2 is correct done clear
  C)
  Both 1 and 2 are correct          done clear
  D)
  Neither 1 nor 2 is correct done clear
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• question_answer15)
  The Coral Reef Research Centre of India is located at
  A)
  Kavaratti           done clear
  B)
  Puducherry done clear
  C)
  Port Blair done clear
  D)
  Tuticorin done clear
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• question_answer16)
  The coral formation named 'Roast Reef lies along the coast of:
  A)
  Australia          done clear
  B)
  New Zealand done clear
  C)
  Norway done clear
  D)
  Somalia done clear
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• question_answer17)
  Consider the following statements and select the correct answer using the code given below:

  1. The bony fishes constitute about 90% of the total fishes of the world

  2. The cartilaginous fishes constitute about 10 percent of the total fishes of the world

  3. Tuna fish can travel more than a 1.7 million km in its life time.

  4. Tuna fish regularly migrate from California (USA) to Japan and back.

  A)
  1, 2 and 3 are correct     done clear
  B)
  1, 2 and 4 are correct done clear
  C)
  2, 3 and 4 are correct     done clear
  D)
  1, 2, 3 and 4 are correct done clear
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• question_answer18)
  The highest tides occur in the
  A)
  Gulf of Aqaba               done clear
  B)
  Gulf of Carpentria done clear
  C)
  Gulf of Funday   done clear
  D)
  Gulf of Martaban done clear
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• question_answer19)
  Which one of the following is not correctly matched?
  A)
  A line joining the points of equal depth is known as isobath. done clear
  B)
  A line joining the points of equal salinity is known as isohaline. done clear
  C)
  A line joining the points of equal sunshine is known as isonif. done clear
  D)
  A line joining the points of equal rainfall in known as isohyte. done clear
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• question_answer20)
  What explains the eastward flow of the equatorial counter current?
  A)
  The Earth's rotation on its axis done clear
  B)
  Convergence of the two equatorial currents done clear
  C)
  Difference in salinity of water done clear
  D)
  Occurrence of the belt of calm near the equator done clear
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• question_answer21)
  Consider the following statements and select the correct answer using the code given below:.

  1. The continental shelves of the Atlantic Ocean are wider as compared to that of the Pacific Ocean

  2. Most of the material deposited at the continental shelf comes from erosion of the adjacent continental mass.

  3. The width of a shelf is usually determined by proximity to a plate boundary.

  A)
  1 and 2 are correct        done clear
  B)
  1 and 3 are correct done clear
  C)
  2 and 3 are correct  done clear
  D)
  1, 2 and 3 are correct done clear
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• question_answer22)
  Consider the following statements and select the correct answer using the code given below:

  1. About 3.5% of seawater consists of dissolved substances.

  2. Variations of 0.1% in salinity are significant, therefore oceanographers prefer to use parts-per-thousand notion (%) rather than per cent (%) in discussing salinity.

  3. Nearly every element present in the crust and atmosphere is also present in the oceans.

  A)
  1, 2 and 3 are correct done clear
  B)
  1 and 2 are correct done clear
  C)
  2 and 3 are correct       done clear
  D)
  None of the above is correct done clear
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• question_answer23)
  Which one of the following statements is not correct?
  A)
  A periodic short-term change in the height of the ocean surface at a particular place due to solar, lunar and gravitational forces is known as a tide. done clear
  B)
  A tide influenced by weather is known as meteorological tide. done clear
  C)
  A complex tidal cycle, usually with one high tide and one low tide of unequal height per day is known as mixed tide. done clear
  D)
  The crest of the wave causing tides is known as tidal wave. done clear
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• question_answer24)
  Consider the following statements and select the correct answer using the code given below:

  1. Heat and temperature are not the same thing.

  2. Heat tell us how many and how rapidly molecules are vibrating.

  3. Temperature records only how rapidly the molecules of a substance are vibrating.

  4. Temperature is an object's response to an input (or removal) of heat.

  A)
  1, 2 and 3 are correct     done clear
  B)
  1, 3 and 4 are correct                   done clear
  C)
  2, 3 and 4 are correct     done clear
  D)
  1, 2, 3 and 4 are correct done clear
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• question_answer25)
  Which one of the following statements is not correct?
  A)
  Water molecules in hot water vibrate more rapidly than water molecules in cold water. done clear
  B)
  The density of pure water is 1 gram per cubic centimeter \[(1g/c{{m}^{3}})\]. done clear
  C)
  Granite rock is heavier, with a density of about\[3.7\text{ }g/c{{m}^{3}}\]. done clear
  D)
  Most substances become denser (weigh more per unit volume) as they get colder. done clear
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• question_answer26)
    A tide caused by the gravitational and inertial interaction of the Sun and the Earth is known as
  A)
  Meteorological Tide           done clear
  B)
  Neap Tide done clear
  C)
  Spring Tide    done clear
  D)
  Solar Tide. done clear
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• question_answer27)
  Consider the following statements and select the correct answer using the code given below:

  1. The thin film of water at the surface of ocean that receivers sunlight is known as photic zone.

  2. The photic zone rarely extends deeper than 200 meters.

  3. The upper half of the photic zone- the layer in which most biological productivity occurs is called euphotic zone.

  4. Below the photic zone is the aphotic (dark zone) which extends to the bottom.

  A)
  1, 2 and 3 are correct     done clear
  B)
  1, 2, 3 and 4 are correct done clear
  C)
  1, 3 and 4 are correct     done clear
  D)
  2, 3 and 4 are correct done clear
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• question_answer28)
  Arrange the following zones of the oceans according to depth in a descending order and select the correct answer using the code given below:
  A)
  Bathyl Zone, Abyssal Zone and Hadal Zone. done clear
  B)
  Bathyl Zone, Hadal Zone and Abyssal Zone done clear
  C)
  Hadal Zone, Bathyl Zone and Abyssal Zone done clear
  D)
  Hadal Zone, Abyssal Zone and Bythal Zone done clear
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• question_answer29)
  Which one of the following is not correctly matched?
  A)
  Sand on the shoreward side of the berm crest, sloping away from the ocean. done clear
  B)
  A zone of unconsolidated particles extending from below water level to the edge of the coastal zone. done clear
  C)
  A diagonal accumulation of sediment parallel to shore. done clear
  D)
  Water from waves washing onto a beach. done clear
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• question_answer30)
  Consider the following statements and select the correct answer using the code given below:

  1. The Terrigenous sediments constitute about 55 % of all ocean floor area covered

  2. The Biogenous sediments constitute about 45 % of all ocean floor area covered

  A)
  Only 1 is correct          done clear
  B)
  Only 2 is correct done clear
  C)
  Both 1 and 2 are correct   done clear
  D)
  Neither 1 nor 2 is correct done clear
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