MCQOPTIONS
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MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Oceanography (Geography) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the most abundant component of salts in sea ? |
| A. | Calcium |
| B. | Sodium |
| C. | Chlorine |
| D. | Potassium |
| Answer» D. Potassium | |
| 2. |
Average salinity of water of Arabian Sea is |
| A. | 25 ppt |
| B. | 35 ppt |
| C. | 45 ppt |
| D. | 55 ppt |
| Answer» C. 45 ppt | |
| 3. |
Salinity in ocean water decrease when |
| A. | evaporation is more |
| B. | wind velocity is high |
| C. | rainfall is heavy |
| D. | humidity is high |
| Answer» D. humidity is high | |
| 4. |
Assertion (A) : Oceanic salinity is higher along Tropics of Cancer and Capricorn.Reason (R) : Increased evaporation coupled with relatively more insolation along these latitudes causes higher oceanic salinity.Code |
| A. | Both (A) and (R) are individually true and (R) is the correct explanation of (A) |
| B. | Both (A) and (R) are individually true but (R) is not the correct explanation of (A) |
| C. | (A) is true but (R) is false |
| D. | (A) is false but (R) is true |
| Answer» B. Both (A) and (R) are individually true but (R) is not the correct explanation of (A) | |
| 5. |
Assertion (A) : The amount of salinity in the tropical coasts of continents.Reason (R) : The trade wind causes upwelling of water in the western coasts and the water is piled up in the eastern coasts of continents.Code |
| A. | Both (A) and (R) are individually true and (R) is the correct explanation of (A) |
| B. | Both (A) and (R) are individually true but (R) is not the correct explanation of (A) |
| C. | (A) is true but (R) is false |
| D. | (A) is false but (R) is true |
| Answer» B. Both (A) and (R) are individually true but (R) is not the correct explanation of (A) | |
| 6. |
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.Code |
| A. | Both (A) and (R) are individually true and (R) is the correct explanation of (A) |
| B. | Both (A) and (R) are individually true but (R) is not the correct explanation of (A) |
| C. | (A) is true but (R) is false |
| D. | (A) is false but (R) is true |
| Answer» E. | |
| 7. |
Consider the following statementsSalinity of water in the equatorial oceans decrease because1. large rivers like Amazon and Congo enter into the sea2. evaporation is less3. waters from Arctic and Antarctic mix with the waters of Equator4. of heavy rainfallWhich of these statements are correct ? |
| A. | 1 and 2 |
| B. | 2 and 4 |
| C. | 1 and 3 |
| D. | 1 and 4 |
| Answer» E. | |
| 8. |
Assertion (A) : Average ocean salinity generally decreases from equator the pole but tropical zone (20 - 30 ) is charcterized by maximum salinity.Reason (R) : The tropical zone owes its high salinity to high temperature, high evaporation and significantly low rainfall.Codes : |
| A. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| B. | Both (A) and (R) are true but (R) is not a correct explanation of (A) |
| C. | (A) is true but (R) is false |
| D. | (A) is false but (R) is true |
| Answer» B. Both (A) and (R) are true but (R) is not a correct explanation of (A) | |
| 9. |
Consider the following conditions1. anticyclone conditions with static air and high temperature2. Cyclonic conditions with unstable air3. High precipitation with low evaporation4. Low precipitation with high evaporation High salinity of ocean waters is associated with |
| A. | 1 and 4 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 2 and 4 |
| Answer» B. 2 and 3 | |
| 10. |
Major source of oceanic salinity is |
| A. | Rivers |
| B. | Land |
| C. | Wind |
| D. | Ash from volcanoes |
| Answer» E. | |
| 11. |
The highest salinity is found in |
| A. | Lake Van |
| B. | Lake Chad |
| C. | Dead Sea |
| D. | Red Sea |
| Answer» B. Lake Chad | |
| 12. |
What is the average salt content in a liter of sea water ? |
| A. | 39 gm |
| B. | 37 gm |
| C. | 35 gm |
| D. | 32 gm |
| Answer» B. 37 gm | |
| 13. |
When water freeze in the polar seas the salts |
| A. | from a layer on top |
| B. | remain in the substance water that does not freeze |
| C. | sink to the bottom |
| D. | partly freeze and partly sink to the bottom |
| Answer» C. sink to the bottom | |
| 14. |
Which one of the following sequence in the increasing order of salinity concentration in their waters is correct ? |
| A. | Gulf of California - Baltic Sea - Red Sea - Arctic Ocean |
| B. | Baltic Sea - Arctic Ocean - Gulf of California - Red Sea |
| C. | Red Sea - Gulf of California - Arctic Ocean - Baltic sea |
| D. | Arctic Ocean - Gulf of California - Baltic Sea - Red Sea |
| Answer» D. Arctic Ocean - Gulf of California - Baltic Sea - Red Sea | |
| 15. |
Consider the following conditions |
| A. | 1 and 4 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 2 and 4 |
| Answer» B. 2 and 3 | |
| 16. |
Salinity |
| A. | evaporation is more |
| B. | wind velocity is high |
| C. | rainfall is heavy |
| D. | humidity is high |
| Answer» D. humidity is high | |
| 17. |
The favourable percentage of sea water salinity from the point of view of fish production is |
| A. | 2.0 to 2.5 |
| B. | 2.5 to 3.0 |
| C. | 3.0 to 3.5 |
| D. | 3.5 to 4.0 |
| Answer» D. 3.5 to 4.0 | |
| 18. |
Major source of |
| A. | Rivers |
| B. | Land |
| C. | Wind |
| D. | Ash from volcanoes |
| Answer» E. | |
| 19. |
Average salinity of water of |
| A. | 25 ppt |
| B. | 35 ppt |
| C. | 45 ppt |
| D. | 55 ppt |
| Answer» C. 45 ppt | |
| 20. |
The relief of the ocean floor is generally |
| A. | more uniform than that of the continents |
| B. | not of much significance |
| C. | more diverse than that of the continents |
| D. | show minor variation only |
| Answer» D. show minor variation only | |
| 21. |
The number of grams of dissolved salt in 1000 grams of sea water is |
| A. | 10 grams |
| B. | 35 grams |
| C. | 15 grams |
| D. | 5 grams |
| Answer» B. 35 grams | |