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VisionIAS - Online Self Test
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Questions for practice
1)

Arrange the following constituents of salts in the decreasing order of their percentage in the ocean water

  1. Sodium Chloride
  2. Magnesium Bromide
  3. Calcium Carbonate
  4. Calcium sulfate.

Choose the correct option from below

(a)1-4-3-2

(b)1-2-3-4

(c)2-3-1-4

(d)4-3-2-1

2)

The Coast of Florida and the Coast of California are located on the same latitude but have different salinity. This is because of which of the following?

(a)Prevailing trade winds

(b)Prevailing Westerlies

(c)Influx of more rivers in Florida

(d)None of the above

3)

The salinity is moderate in equatorial regions even when temperatures are high due to?

(a)High Precipitation

(b)High density of forests

(c)Low Pressure

(d)Cold currents

4)

Consider the following statements :

Statement-1 : Equatorial regions have more precipitation and less salinity.
Statement-2 : Precipitation adds fresh water and decreases salinity. 

Which one of the following is correct in respect of the above statements?

(a)Both Statement-1 and Statement-2 are correct and Statement-2 is the correct explanation for Statement-1

(b)Both Statement-1 and Statement-2 are correct and Statement-2 is not the correct explanation for Statement-1

(c)Statement-1 is correct but Statement-2 is incorrect

(d)Statement-1 is incorrect but Statement-2 is correct 

5)

Consider the following with respect to the areas of very high salinity:

1. Lake Van of Turkey and the Great Salt lake from Utah in the USA
2. The Dead Sea between Jordan and Israel
3. The Red Sea and the Persian Gulf 

How many of the statement/s given above is/are correct?

(a)Only one

(b)Only two

(c)All three

(d)None

6)

Consider the following with respect to the Horizontal Salinity Distribution:

1. Areas of moderate salinity: Equatorial regions
2. Areas of very high salinity: Subtropical Regions
3. Areas of low salinity: Polar Regions  

How many of the statement/s given above is/are correct?

(a)Only one

(b)Only two

(c)All three

(d)None

7)

With reference to factors affecting ocean salinity, consider the following statements:

1. The salinity of water in the surface layer of oceans depends mainly on evaporation and precipitation.
2. Surface salinity is greatly influenced in coastal regions by the freshwater flow from rivers.
3. The higher the wind speed, the higher the evaporation resulting in higher salinity.

How many of the statements given above is/are correct?

(a)Only one

(b)Only two

(c)All three

(d)None

8)

Consider the following statements with respect to factors increase/decrease Salinity in Seas:

1. The influx of river waters
2. More Precipitation
3. Melting of Ice
4. Higher temperature and higher wind velocity
5. Cold Ocean Current

How many of the statement/s given above is/are correct?

(a)Only two

(b)Only three

(c)Only four

(d)All five

9)

Though California and Florida are located on the same latitude, the salinity at the coast of Florida is higher than California"s. Explain why. (150 words/10 marks)

10)

Explain the horizontal distribution of salinity.(10 marks/ 150 words)



Answers
1) a
2) a
3) a
4) a
5) c
6) c
7) c
8) d