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MCQOPTIONS
This section includes 2658 Mcqs, each offering curated multiple-choice questions to sharpen your UPSC IAS Exam knowledge and support exam preparation. Choose a topic below to get started.
| 901. |
Consider the following statements regarding continental shelves 1. They have gentle slope and they extend up to 200m depth. 2. They are quite wide where mountains are close and parallel to the coast. 3. They are narrow where there are wide plains near the coast. 4. The widest continental is off the Arctic coast of Siberia. |
| A. | ?1 and 2 are true |
| B. | ?2 and 3 are true |
| C. | ?3 and 4 are true |
| D. | ?1 and 4 are true |
| Answer» E. | |
| 902. |
Salinity of the open oceans is maximum in the: |
| A. | ?Equatorial regions |
| B. | ?Tropical regions?????????????????????? |
| C. | ?Sub-tropical region |
| D. | ?Polar region |
| Answer» D. ?Polar region | |
| 903. |
Consider the following water bodies 1. Lake Van 2. Dead Sea 3. Red Sea 4. Gulf of Bothnia 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 |
| Answer» B. ?2, 3, 4 and 1 | |
| 904. |
Which of following statements is not correct? |
| 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. |
| Answer» B. ?In the South Atlantic Ocean salinity is higher along the western margins as compared to salinity along the eastern margins. | |
| 905. |
Consider the following statements 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 the above statements are correct? |
| A. | ?1 and 2 only |
| B. | ?2 and 3 only |
| C. | ?3 and 4 only |
| D. | ?1, 2, 3 and 4 |
| Answer» E. | |
| 906. |
Match List I with List II and find out the correct answer using the codes given below 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 |
| Answer» E. | |
| 907. |
Match List I with List II and find out the correct answer using the codes given below????? List I (Sea) List II (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 |
| Answer» E. | |
| 908. |
Consider the following statements 1. Lake Van has the highest salinity in the world. 2. Gulf of Bothnia records some of the lowest salinity in the world. Which of the above statements is/are correct? |
| A. | ?1 only |
| B. | ?2 only |
| C. | ?Both 1 and 2 |
| D. | ?Neither 1 nor 2 |
| Answer» D. ?Neither 1 nor 2 | |
| 909. |
Consider the following statements: 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. Which of the above statements is/are correct? |
| A. | ?1 only |
| B. | ?2 only |
| C. | ?Both 1 and 2 |
| D. | ?Neither 1 nor 2 |
| Answer» E. | |
| 910. |
Match List I with List II and select the correct answer using the codes given below: List I (Sea) List II (Country) A. Black Sea 1. Bulgaria B. Red Sea 2. China C. Yellow Sea 3. Eritrea D. Caspian Sea 4. Kazakhstan |
| A. | A-1 B-2 C-4 D-3 |
| B. | A-2 B-3 C-1 D-4 |
| C. | A-1 B-3 C-2 D-4 |
| D. | A-2 B-4 C-1 D-3 |
| Answer» D. A-2 B-4 C-1 D-3 | |
| 911. |
Match List I with List II and select the correct answer using the codes given below: List I (Sea) List II (Country) A. Black Sea??????? 1. Bulgaria B. Red Sea??????? 2. China C. Yellow Sea????? 3. Eritrea D. Caspian Sea???? 4. Kazakhstan |
| A. | A-1 ?????????????? B-2????? C-4?????? D-3 |
| B. | A-2??????????????? B-3????? C-1?????? D-4 |
| C. | A-1??????????????? B-3 ???? C-2?????? D-4 |
| D. | A-2??????????????? B-4????? C-1?????? D-3 |
| Answer» D. A-2??????????????? B-4????? C-1?????? D-3 | |
| 912. |
Which of the following is the correct sequence of seas in decreasing order of salinity? |
| 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 |
| Answer» B. ?Caribbean Sea, Bering Sea, Baltic Sea, Red Sea | |
| 913. |
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 |
| Answer» E. | |
| 914. |
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 |
| Answer» D. ?I, II and III are correct | |
| 915. |
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 |
| Answer» B. ?Magnesium Chloride, Magnesium Sulphate, Calcium Sulphate, Sodium Chloride | |
| 916. |
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 |
| Answer» C. A-1 B-3 C-2 D-4 | |
| 917. |
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 |
| Answer» E. | |
| 918. |
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. |
| Answer» D. ?They are similar to youthful river valleys on the land but are much deeper than the river valleys on the land. | |
| 919. |
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 |
| Answer» E. | |
| 920. |
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 |
| Answer» B. A-3 B-4 C-1 D-2 | |
| 921. |
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 |
| Answer» B. A-3??????????????? B-4????? C-1?????? D-2 | |
| 922. |
Consider the following pairs: List I (Sea) List II (Ocean) 1. Kara Sea Atlantic Ocean 2. Baltic Sea Arctic Ocean 3. Weddell Sea Southern Ocean 4. Coral Sea??? Pacific Ocean Which of the above pairs are correctly matched? |
| A. | ?1 and 2 only |
| B. | ?2 and 3 only |
| C. | ?3 and 4 only |
| D. | ?None |
| Answer» D. ?None | |
| 923. |
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 |
| Answer» B. A-2 B-3 C-4 D-1 | |
| 924. |
Consider the following pairs: List I (Sea) List II (Ocean) 1. Kara Sea Atlantic Ocean 2. Baltic Sea Arctic Ocean 3. Weddell Sea Southern Ocean 4. Coral Sea Pacific Ocean Which of the above pairs are correctly matched? |
| A. | 1 and 2 only |
| B. | 2 and 3 only |
| C. | 3 and 4 only |
| D. | None |
| Answer» D. None | |
| 925. |
Match List I with List II and find out the correct answer using the codes given below: List I (Feature) List II (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 |
| Answer» B. A-2??????????????? B-3????? C-4?????? D-1 | |
| 926. |
The northern and the southern parts of the Mid Atlantic Ridge are respectively known as: |
| 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 |
| Answer» B. ?Challenger Ridge and Walvis Ridge | |
| 927. |
Consider the following statements 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 above statements is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 928. |
Consider the following statements 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 Which of the above statements is/are correct? |
| A. | ?1 only |
| B. | ?2 only |
| C. | ?Both 1 and 2 |
| D. | ?Neither 1 nor 2 |
| Answer» C. ?Both 1 and 2 | |
| 929. |
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 |
| Answer» B. A-1 B-2 C-4 D-3 | |
| 930. |
Which of the following combination is wrong? Plateau |
| A. | ?Telegraph Plateau :?? ???? Indian Ocean |
| B. | ?Cocoa ridge???? ?????:?? ???? Pacific Ocean |
| C. | ?Wolvis ridge???? ???:?? ????? Atlantic Ocean |
| D. | ?Agulhas basin??? ???:?? ???? Indian Ocean |
| Answer» B. ?Cocoa ridge???? ?????:?? ???? Pacific Ocean | |
| 931. |
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. Which of the above statements is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» B. 2 only | |
| 932. |
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 |
| Answer» D. ?3, 2 and 1 | |
| 933. |
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 |
| Answer» B. A-3 B-1 C-4 D-2 | |
| 934. |
Match list I with list II and select correct answer using the codes given below List I (Ocean Trench) List II (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 |
| Answer» B. A-3??????????????? B-1????? C-4?????? D-2 | |
| 935. |
Match list I with list II 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 |
| Answer» B. A-1 B-2 C-3 D-4 | |
| 936. |
Consider the following statements: 1. Seamounts are isolated steep submarine hills 2. The Andaman and Nicobar Islands are parts of seamounts projecting above the sea level. Which of the above statements is/are correct? |
| A. | ?1 only |
| B. | ?2 only |
| C. | ?Both 1 and 2 |
| D. | ?Neither 1 nor 2 |
| Answer» B. ?2 only | |
| 937. |
Consider the following pairs List I (Ocean Floor Feature) List II (Percentage of Ocean Area) 1. Continental Shelves (a) 7.6 2. Continental Slopes (b) 8.5 3. Abyssal plains (c) 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 |
| Answer» E. | |
| 938. |
Consider the following pairs 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 |
| Answer» E. | |
| 939. |
Which of the following straits is nearest to the International Date Line? |
| A. | Malacca Strait |
| B. | Strait of Florida |
| C. | Bering Strait |
| D. | Strait of Gibraltar |
| Answer» D. Strait of Gibraltar | |
| 940. |
Consider the following statements regarding continental slopes 1. They have an average slope of \[{{4.3}^{o}}\] 2. Their average depth varies from 200 to 2000 m. 3. The maximum extension of continental slope is found between \[{{20}^{o}}N\] and \[{{50}^{o}}N\] latitudes and on \[{{80}^{o}}N\] and \[{{70}^{o}}N\] latitudes 4. They are characterized by extensive marine deposits Which of the above statements are correct? |
| A. | ?1, 2 and 4 only |
| B. | ?1, 2 and 3 only |
| C. | ?2, 3 and 4 only |
| D. | ?1, 2, 3 and 4 |
| Answer» C. ?2, 3 and 4 only | |
| 941. |
???????? Which of the following straits is nearest to the International Date Line?? ??????????????????????????????? |
| A. | ?Malacca Strait |
| B. | ?Strait of Florida |
| C. | ?Bering Strait |
| D. | ?Strait of Gibraltar |
| Answer» D. ?Strait of Gibraltar | |
| 942. |
Match the following and find out the correct answer by using the codes given below. List I (Feature) List II (Example) A. Strait 1. Malacca B. Sea 2. Caribbean C. Gulf 3. Bothnia D. Isthmus 4. Panama Code: |
| A. | A-1 B-2 C-3 D-4 |
| B. | A-3 B-1 C-4 D-2 |
| C. | A-2 B-3 C-1 D-4 |
| D. | A-4 B-2 C-3 D-1 |
| Answer» B. A-3 B-1 C-4 D-2 | |
| 943. |
Through which one of the following straits does a channel connect the United Kingdom and France????????????????????????????????????? ???????? |
| A. | ?Davis Strait |
| B. | ?Strait of Dover |
| C. | ?Denmark Strait |
| D. | ?Strait of Gibraltar ?? |
| Answer» C. ?Denmark Strait | |
| 944. |
Through which one of the following straits does a channel connect the United Kingdom and France? |
| A. | Davis Strait |
| B. | Strait of Dover |
| C. | Denmark Strait |
| D. | Strait of Gibraltar |
| Answer» C. Denmark Strait | |
| 945. |
Match the following and find out the correct answer by using the codes given below. List I (Feature) List II (Example) A. Strait?????????? 1.? Malacca B. Sea??????????? 2. Caribbean C. Gulf?????????? 3. Bothnia D. Isthmus???????? 4. Panama |
| A. | A-1 ?????????????? B-2????? C-3?????? D-4 |
| B. | A-3??????????????? B-1????? C-4?????? D-2 |
| C. | A-2??????????????? B-3????? C-1?????? D-4 |
| D. | A-4??????????????? B-2????? C-3?????? D-1 |
| Answer» B. A-3??????????????? B-1????? C-4?????? D-2 | |
| 946. |
Consider the following statements 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. Which of the above statements is/are correct? |
| A. | ?1 only?????????? ?????????????? |
| B. | ?2 only |
| C. | ?Both 1 and 2???? ??????????? |
| D. | ?Neither 1 nor 2 |
| Answer» C. ?Both 1 and 2???? ??????????? | |
| 947. |
Consider the following statements 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. Which of the above statements are correct? |
| A. | ?1 and 2 only???? |
| B. | ?1, 2 and 3 only |
| C. | ?2, 3 and 4 only?? ?????????? |
| D. | ?1, 2, 3 and 4 |
| Answer» E. | |
| 948. |
What is the correct sequence of the following oceans in descending order of their areas? |
| A. | ?Indian Ocean, Arctic Ocean, Atlantic Ocean and Pacific Ocean |
| B. | ?Arctic Ocean, Atlantic Ocean, Indian Ocean and Pacific Ocean |
| C. | ?Atlantic Ocean, Pacific Ocean, Arctic Ocean and Indian Ocean |
| D. | ?Pacific Ocean, Atlantic Ocean, Indian Ocean and Arctic Ocean |
| Answer» E. | |
| 949. |
The study of earth's structure and the rocks that make up the earth is called |
| A. | Geology |
| B. | Glaciology |
| C. | Hydrology |
| D. | Geomorphology |
| Answer» E. | |
| 950. |
Who advocated the opposite theory of determinism? |
| A. | Vidal de la Blache |
| B. | Huntington |
| C. | Ptolemy |
| D. | None of these |
| Answer» B. Huntington | |