Hydrology MCQs with Answers & Solutions — Page 2

According to recommendations of IS: 4987–1968, how many raingauges would be required for 1170 square kilometer hilly area?Precipitation

A confined aquifer of thickness 5 m gives a steady discharge of 20 litre/sec through a well of 0.3 m radius. The height of water in the well dropped…Groundwater Hydrology

The precipitation in the form of water drops of size larger than 0.5 mm is known asPrecipitation

The word unit in the unit hydrograph refers to theRunoff and Hydrographs

An isohyet is a line joining points havingPrecipitation

Which of the following factors have to be considered in selecting a site for a stream gauging station?Streamflow Measurement

The discharge per unit drawdown at a well is known asGroundwater Hydrology

The standard Symons type rain gauge has a collecting area of diameterPrecipitation

The Probable Maximum Flood isSurface Water Hydrology

A Unit Hydrograph has one unit ofRunoff and Hydrographs

A geological formation which is essentially impermeable to the flow of water.Groundwater Hydrology

The earth’s water circulatory system is known asSurface Water Hydrology

The commonly used rain gauge isPrecipitation

According to Fanning’s formula, the flood discharge (Q) in cumecs is given byRunoff and Hydrographs

The water stored in the reservoir below the minimum pool level is calledReservoir Storage and Flood Control

The precipitation which is caused by lifting of an air mass due to the pressure difference is calledPrecipitation

The Penman equation is used primarily for estimatingEvaporation

The wading technique is commonly used to measureStreamflow Measurement

Which of the following chemical emulsions is primarily used to reduce water loss through evaporation from open water surfaces?Evaporation

If N is the optimum number of rain gauge stations, C v is the coefficient of variation of the rainfall values of the existing rain gauge stations and…Precipitation

Which of the following statements is/are true regarding network of rain gauge stations? i. In plains, 01 rain gauge up to 500 km 2 shall be…Precipitation

The shape of the basin is quantitatively measured by various factors such as the i. form factor ii. circularity ratio iii. elongation ratio iv.…Surface Water Hydrology

On small streams, the flow can be measured with the help of hydraulic measuring devices such as i. Trapezoidal weir ii. Parshall flumeStreamflow Measurement

An atmometer is used to measureEvaporation

Which of the following statements is/are true for Potential Evapo Transpiration (PET)? i. It is defined as the evapotranspiration which would occur…Evaporation

The infiltration index that represents a constant average infiltration rate during a rainfall event is calledInfiltration

Volume of water an aquifer releases or takes into storage per unit surface area of the aquifer per unit drop of the water table is calledGroundwater Hydrology

An aquifer bound by one or two aquitards is called as i. semi-confined aquifer ii. leaky aquifer iii. aquifugeGroundwater Hydrology

Which of the following best defines the term ‘overdraft’ in the context of groundwater management?Groundwater Hydrology

Water which infiltrates the soil surface and then moves laterally through the upper soil horizons towards the stream channels above the main…Runoff and Hydrographs

Which of the following is/are the assumptions of the unit hydrograph theory? i. The effective rainfall is uniformly distributed within its duration…Runoff and Hydrographs

In hydrogeology, an isochrone representsRunoff and Hydrographs

The Muskingum method is primarily used in hydrology forFlood Routing

Which of the following best defines the Time of Concentration in the context of watershed runoff?Runoff and Hydrographs

Double mass curve method is used forPrecipitation

Which of the following statements are true? 1.Horton's equation models infiltration capacity. 2.Phi-index is average rainfall lost to infiltration.…Infiltration

For an unconfined aquifer, the drawdown is moreGroundwater Hydrology

Gumbel distribution is used to modelFlood Frequency Analysis

Baseflow isRunoff and Hydrographs

The unit hydrograph is applicable forRunoff and Hydrographs

Match the following: List-I A. Infiltration B. Peak discharge C. Reservoir routing D. Flood frequency List-II 1. Horton's equation 2. Rational method…Flood Routing

Which instrument measures groundwater level?Groundwater Hydrology

A storm hydrograph has a rising limb due toRunoff and Hydrographs

SCS method givesRunoff and Hydrographs

Which of the following contributes most to peak flood?Runoff and Hydrographs

Which of the following methods can be used for flood routing in reservoirs?Flood Routing

Sedimentation in reservoirs reducesReservoir Storage and Flood Control

Hyetograph representsPrecipitation

Which rivers occasionally cause flood in the Gujarat state?Surface Water Hydrology

The ratio of actual rainfall in a year at a place to the normal annual rainfall of that place is calledPrecipitation