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Civil Engineering Objective Questions { Water Resources Engineering }



36. Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure
A. at the same temperature
B. at the same pressure
C. in the same volume
D. in the atmosphere.

37.  Pick up the correct statement from the following :
A. Absolute humidity at a given temperature is equal to weight of moisture present in a unit volume
B. Relative humidity is the ratio of actual vapour pressure and saturation vapour pressure at the same temperature
C. Relative humidity is the ratio of the weight of the vapours present per unit volume to the weight of vapours which could be contained at the same temperature when fully saturated
D. All the above.

38. Absolute humidity in air
A. decreases at higher altitudes
B. increases at higher altitudes
C. remains constant at all altitudes
D. none of these.

39. Precipitation caused by lifting of an air mass due to the pressure difference, is called
A. cyclonic precipitation
B. convective precipitation
C. orographic precipitation
D. none of these.

40.  Pick up correct statement from the following :
A. The air from outer portion of cyclones gets lifted for causing precipitation
B. The air from central portion of cyclones gets lifted for causing precipitation
C. The air from entire surface of the cyclones gets lifted for causing recipitation
D. None of those.

41. Precipitation caused due to upward movement of warmer air as compared to surrounding air, is called
A. cyclonic precipitation
B. convective precipitation
C. orographic precipitation
D. none of these.

42. Precipitation caused due to striking of air masses with a topographical feature, is called
A. orographic precipitation
B. convective precipitation
C. cyclonic precipitation
D. none of these.

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