1. The process by which water changes into vapour in atmosphere?
(a) Evaporation
(b) Transpiration
(c) Precipitation
(d) Condensation
See Answer
Answer:- A
2. Water from the land and sea continuously evaporates into the atmosphere and returns to the earth in the form of precipitation. This process is known as
(a) Nitrogen cycle
(b) Water cycle
(c) Carbon cycle
(d) Oxygen cycle
See Answer
Answer:- B
3. Which of the following is/are the major source of fresh water?
(l) Rivers
(II) Ponds
(III) Glaciers
(a) I, II and III
(b) Only I
(c) Only I
(d) Only III
See Answer
Answer:- A
4. Ocean bodies and seas contain large amounts of dissolved
(a) Magnesium
(b) Iron
(c) Salts
(d) Potassium
See Answer
Answer:- C
5. The average salinity of the oceans is…… parts per thousands.
(a) 35
(b) 34
(c) 30
(d) 20
See Answer
Answer:- A
6. Dead sea in Israel has salinity of……grams per litre of water.
(a) 350
(b) 500
(c) 340
(d) 400
See Answer
Answer:- C
7. Why do swimmers float in Dead sea?
(a) Salt makes it dense
(b) It is lighter in weight
(c) Both (a) and (b)
(d) None of these
See Answer
Answer:- A
8. ……part of the surface is covered by water.
(a) 1/4
(b) 2/3
(c) 3/4
(d) 1/6
See Answer
Answer:- C
9. Which day is celebrated on 22 March every year?
(a) World Environment Day
(b) Earth Day
(c) Vanamohatsv
(d) World Water Day
See Answer
Answer:- D
10. What are the three movements observed in oceans?
(a) Waves
(b) Currents
(c) Tides
(d) All of the above
See Answer
Answer:- D
11. When water on the surface of the ocean rises and falls alternately, it is known as
(a) Tsunami
(b) Cyclone
(c) Circulation
(d) Waves
See Answer
Answer:- D
12. During a storm, the wind blowing at very high speed form….. waves.
(a) Slow
(b) Low
(c) Huge
(d) Horizontal
See Answer
Answer:- C
13. What is called the rhythmic rise and fall of ocean water twice in a day?
(a) Tides
(b) Ocean currents
(c) Waves
(d) All of these
See Answer
Answer:- A
14. When water reaches its maximum level is known as……and when water recedes to its lowest level is known as…..
(a) Vertical tide, Horizontal tide
(b) High tide, Low tide
(c) Up welling tide, Submerging tide
(d) Fast tide, Slow tide
See Answer
Answer:- B
15. The gravitational pull exerted by the sun and the moon on the earth’s surface causes the:
(a) Tides
(b) Waves
(c) Earthquake
(d) Tsunami
See Answer
Answer:- A
16…….. tides help in navigation.
(a) Low
(b) High
(c) Very low
(d) Slow
See Answer
Answer:- B
17. The rise and fall of water due to tides is used to generate…….
(a) Thermal power
(b) Solar power
(c) Hydro power
(d) Nuclear power
See Answer
Answer:- C
18. Which of the following is the purest form of water?
(a) River water
(b) Ground water
(c) Rain water
(d) Ocean water
See Answer
Answer:- C
19. Which of the following is not a source of surface water?
(a) rain water
(b) river and lake water
(c) spring water
(d) sea water
See Answer
Answer:- C
20. 95% of the earth’s water is stored in its
(a) Rivers
(b) Oceans
(c) Glaciers
(d) Underground aquifers
See Answer
Answer:- B
21. What is Rainwater Harvesting?
(a) Collection and storage of used water
(b) Collection and storage of rainwater
(c) Distribution of water
(d) None of the above
See Answer
Answer:- B
22. What is the purpose of rain water harvesting?
(a) To hold rain water on the surface of the earth
(b) To recharge ground water
(c) To use water for the irrigation of crops
(d) To rear fish
See Answer
Answer:- B
23. Which state introduced rainwater harvesting in India?
(a) Kerala
(b) Karataka
(c) Maharashtra
(d) Tamil Nadu
See Answer
Answer:- D
24. Which irrigation practice leads to maximum water conservation?
(a) Water-wheel
(b) Tube-well
(c) Drip irrigation
(d) Sprinkle
See Answer
Answer:- C
25. In which regions drip irrigation is very useful?
(a) Wet regions
(b) Tropical regions
(c) Monsoonal regions
(d) Dry regions
See Answer
Answer:- D