31. On which of the following rivers is Koyena Dam built?
(a) Krishna
(b) Kaveri
(c) Ganga
(d) Mahanadi
32. What percentage of the total volume of world’s water is estimated to exist as oceans?
(a) 94.5%
(b) 95.5%
(c) 96.5%
(d) 97.5%
33. In which of the following regions, people built Guls and Kuls for irrigation?
(a) Northern Plains
(b) Western Himalayas
(c) Coastal areas
(d) None of the above
34. What is the contribution of hydroelectricity in the total generation of electricity?
(a) 52%
(b) 42%
(c) 32%
(d) 22%
35. On which of the following rivers Mettur dam is constructed?
(a) River kaveri
(b) River Krishna
(c) River Godavari
(d) River Mahanadi
36. Rooftop rainwater harvesting system in Rajasthan is known as-
(a) Guls
(b) Kuls
(c) Tankas
(d) Babos
37. Which of the following structures are known as Tankas?
(a) Underground tankas for storing rainwater from rooftops for drinking purpose.
(b) Tanks constructed on roof tops for storing rainwater.
(c) Tanks constructed in agricultural fields to store rainwater.
(d) Tanks constructed to store flood water.
38. Which one of the following is not an adverse effect of dams?
(a) Inter-state water dispute
(b) Excessive sedimentation of reservoir
(c) Displacement of population
(d) Flood control
39. Due to which of the following reasons are rooftop rainwater harvesting commonly practiced,
particularly in Rajasthan?
(a) To store water for irrigation
(b) To keep house cool
(c) To store drinking water
(d) To clean rooftops
40. In which of the following areas are Guls and Kuls used to channel water for agriculture?
(a) Deccan Plateau
(b) Deserts of Rajasthan
(c) Western Himalayas
(d) Ganga Plains
41. Drip irrigation system is a means of _________ conservation.
(a) water
(b) fauna
(c) flora
(d) forests
42. Different social groups do not have _________ access to water.
(a) special
(b) equal
(c) different
(d) none of the above
43. Multi-purpose dams were launched in India after _________.
(a) 1957
(b) independence
(c) 1962
(d) none of the above
44. Why is water scarcity mainly caused?
(a) Water pollution
(b) Excessive use and unequal access to water
(c) Water management
(d) Using for utility
45. According to hydrological cycle, how can freshwater be obtained?
(a) Snow
(b) Rainwater
(c) Ground water
(d) Drainage
Answer:
31. (a)
32. (c)
33. (b)
34. (d)
35. (a)
36. (c)
37. (a)
38. (d)
39. (c)
40. (c)
41. (a)
42. (b)
43. (b)
44. (b)
45. (c)