# Group I lists a few devices while Group II provides information about their uses. Match the devices with their corresponding use. Group I $\quad$             Group II P. Anemometer 1. Capillary potential of soil water Q. Hygrometer 2. Fluid velocity at a specific point in the flow stream R. Pitot Tube 3. Water vapour content of air S. Tensiometer 4. Wind speed (A) $P-1 ; Q-2 ; R-3 ; S-4$ (B) $P-2 ; Q-1 ; R-4 ; \quad \mathrm{S}-3$ (C) $P-4 ; Q-2 ; R-1 ; S-3$ (D) $P-4 ; Q-3 ; R-2 ; S-1$

## Question ID - 156363 :- Group I lists a few devices while Group II provides information about their uses. Match the devices with their corresponding use. Group I $\quad$             Group II P. Anemometer 1. Capillary potential of soil water Q. Hygrometer 2. Fluid velocity at a specific point in the flow stream R. Pitot Tube 3. Water vapour content of air S. Tensiometer 4. Wind speed (A) $P-1 ; Q-2 ; R-3 ; S-4$ (B) $P-2 ; Q-1 ; R-4 ; \quad \mathrm{S}-3$ (C) $P-4 ; Q-2 ; R-1 ; S-3$ (D) $P-4 ; Q-3 ; R-2 ; S-1$

3537

$P-4 ; Q-3 ; R-2 ; S-1$

Next Question :

An isolated $3-h$ rainfall event on a small catchment produces a hydrograph peak and point of inflection on the falling limb of the hydrograph at 7 hours and 8.5 hours respectively, after the start of the rainfall. Assuming, no losses and no base flow contribution, the time of concentration (in hours) for this catchment is approximately
(A) 8.5
(B) 7.0
(C) 6.5
(D) 5.5 