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Ocean Salinity

16 MCQ questions with answers and explanations

Test yourself▶ Full test · 16 questions

Q1. The highest salinity in the world is found in-

  1. Ain the Great Salt Lake
  2. Bin the Dead Sea
  3. Cin the Pacific Ocean
  4. DAt Lake Van
Show answer & explanation

Answer: D) At Lake Van

Q2. The salt found in the highest quantity in sea water is-

  1. Acalcium chloride
  2. Bsodium chloride
  3. Ccalcium sulfate
  4. Dmagnesium sulfate
Show answer & explanation

Answer: B) sodium chloride

Q3. The correct sequence of the following oceans in descending order of salinity is-

  1. ARed Sea, Black Sea, Arctic Sea
  2. BRed Sea, Arctic Sea, Black Sea
  3. CBlack Sea, Red Sea, Arctic Ocean
  4. DBlack Sea, Arctic Sea, Red Sea
Show answer & explanation

Answer: B) Red Sea, Arctic Sea, Black Sea

Q4. Between which latitudes is the highest amount of salinity found in ocean water?

  1. A0⁰ between 10° and 15° latitude
  2. BBetween 10° and 20° latitude
  3. CBetween 20° and 40° latitude
  4. DBetween 40° and 60° latitude
Show answer & explanation

Answer: C) Between 20° and 40° latitude

Q5. The average salinity of sea water is-

  1. A0.2
  2. B0.25
  3. C0.3
  4. D0.35
Show answer & explanation

Answer: D) 0.35

Q6. The highest salinity of ocean water is found in

  1. Anear 0° latitude
  2. Bnear 25° latitude
  3. Cnear 35° latitude
  4. Dnear 45° latitude
Show answer & explanation

Answer: C) near 35° latitude

Q7. Generally, the salinity of ocean water increases with the increase in depth -

  1. Aincreases
  2. Bdecreases
  3. CRespect remains
  4. Dgradually increases
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Answer: A) increases

Q8. In which ocean is the highest salinity found?

  1. ADead Sea
  2. BRed Sea
  3. CIndian Ocean
  4. DArabian Sea
Show answer & explanation

Answer: A) Dead Sea

Q9. The sea which is different from the other three in terms of salinity is-

  1. ARed Sea
  2. BBlack Sea
  3. CDead Sea
  4. DMediterranean Sea
Show answer & explanation

Answer: C) Dead Sea

Q10. The reason for high salinity in the Dead Sea is-

  1. Ahigh temperature
  2. Bscanty rainfall
  3. Cstagnant water
  4. Dhighest rate of evaporation
Show answer & explanation

Answer: D) highest rate of evaporation

Q11. The reason for the low salinity in the Black Sea is-

  1. Astagnation of water
  2. Blow temperature
  3. Clow evaporation
  4. DSupply of clean water by rivers
Show answer & explanation

Answer: D) Supply of clean water by rivers

Q12. Which of the following oceans has the highest salinity?

  1. AAtlantic Ocean
  2. Bpacific ocean
  3. CIndian Ocean
  4. DArctic Ocean
Show answer & explanation

Answer: A) Atlantic Ocean

Q13. The reason for the relatively high salinity in the North Sea is-

  1. Amore evaporation
  2. Bscanty rainfall
  3. CNorth Atlantic Current
  4. Dover temp
Show answer & explanation

Answer: C) North Atlantic Current

Q14. Salinity of ocean water in high latitudes during summer-

  1. Adecreases
  2. Bincreases
  3. Cremains the same
  4. Dnone of these
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Answer: A) decreases

Q15. The source of ocean salinity is-

  1. Arivers
  2. Bvolcanic ash
  3. Cwind
  4. Dland
Show answer & explanation

Answer: A) rivers

Q16. The average salinity of the water of the Arabian Sea is-

  1. A25 ppt
  2. B35 ppt
  3. C45 ppt
  4. D55 ppt
Show answer & explanation

Answer: B) 35 ppt

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