Hydrology MCQ Questions Answers – Civil Engineering (CE)
1) The % of earth covered by oceans is about
a) 31%
b) 51%
c) 71%
d) 97%
2) The average annual rainfall over the whole of india is estimated as
a) 189 cm
b) 319 cm
c) 89 cm
d) 119 cm
3) The percentage of total quantity of water in the world that is saline is about
a) 71%
b) 33%
c) 67%
d) 97%
4) A rainfall with an intensity of 5 mm/h is classified as
a) traces
b) light rain
c) moderate rain
d) heavy rain
5) Which is the odd one in the following ?
a) Snow
b) Sleet
c) Rain
d) Hail
6) A plot between rainfall intensity versus time is called as
a) hydrograph
b) mass curve
c) hyetograph
d) isohyets
7) Wind speed is measured with
a) a wind vane
b) a heliometers
c) Stevenson box
d) anemometer
8) The average pan coefficient for the standard US Weather Bureau class A pan is
a) 0.85
b) 0.70
c) 0.90
d) 0.20
9) Lysimeter is used to measure
a) infiltration
b) Evaporation
c) Evapotranspiration
d) Vapour pressure
10) The science and practice of water flow measurement is known as
a) Hypsometry
b) Hydrometeorology
d) Fluvimetry
d) Hydrometry
11) Calibration of a current meter for use, in channel flow measurement is done in a
a) wind tunnel
b) water tunnel
c) towing tank
d) flume
12) When an accumulated mass of snow melts, the resulting flow entering a stream is classified as
a) direct runoff
b) base flow
c) subsurface flow
d) interflow
13) A hydrograph is a plot of
a) rainfall intensity against time
b) stream discharge against time
c) cumulative rainfall against time
d) cumulative runoff against time
14) A unit hydrograph has
a) one unit of peak discharge
b) one unit of rainfall duration
c) one unit of direct runoff
d) one unit of the time base of direct runoff
15) Probability of a 10 year flood to occur at least once in the next 4 year is
a) 25%
b) 35%
c) 50%
d) 65%
16) For a return period of 100 years the Gumbel’s reduced variate yT is
a) -4.600
b) 4.600
c) 0.517
d) 1.2853
17) Which of the following equation is used in hydrological flood routing ?
a) energy equation
b) continuity equation
c) equation of motion
d) both a and c
18) In the Muskingum method of channel routing the weighing factor x can have a value
a) between -0.5 to 0.5
b) between 0.0 to 0.5
c) between 0.0 to 1.0
d) between – 1.0 to + 1.0
19) The use of rational formula for estimating floods is limited to catchments of size less than
a) 5000 km2
b) 500 km2
c) 50 km2
d) 5 km2
20) The flow-mass curve is an integral curve of
a) the hydrograph
b) the hyetograph
c) the flow duration curve
d) the S-curve