1. : The science that deals with the occurrence, movement, and distribution of water on Earth is called:
(A) Geology
(B) Hydrology
(C) Oceanography
(D) Meteorology
2. : The hydrologic cycle is primarily driven by:
(A) Wind energy
(B) Solar radiation
(C) Earth’s gravity only
(D) Ocean currents
3. : The process of water movement through soil and porous rocks is known as:
(A) Infiltration
(B) Precipitation
(C) Evaporation
(D) Transpiration
4. : Which of the following is a non-consumptive use of water?
(A) Irrigation
(B) Drinking water supply
(C) Hydropower generation
(D) Industrial cooling
5. : The largest freshwater reservoir on Earth is:
(A) Groundwater
(B) Rivers
(C) Lakes
(D) Glaciers and ice caps
6. : The main source of groundwater recharge is:
(A) Ocean currents
(B) Rainfall and infiltration
(C) River dams
(D) Snowstorms
7. : Which parameter measures the ability of soil to transmit water?
(A) Porosity
(B) Permeability
(C) Specific yield
(D) Capillarity
8. : Aquifers that are confined between two impermeable layers are called:
(A) Unconfined aquifers
(B) Confined aquifers
(C) Perched aquifers
(D) Artesian aquifers
9. : The zone of saturation in groundwater is also known as:
(A) Vadose zone
(B) Water table zone
(C) Capillary zone
(D) Unsaturated zone
10. : The process of converting saline water into freshwater is known as:
(A) Sedimentation
(B) Filtration
(C) Desalination
(D) Evapotranspiration
11. : Runoff is the part of precipitation that:
(A) Infiltrates into the soil
(B) Returns to the atmosphere
(C) Flows over land into rivers and streams
(D) Becomes groundwater only
12. : Which method is commonly used to measure streamflow in rivers?
(A) Pitot tube method
(B) Weirs and flumes
(C) Barometer method
(D) Hygrometer method
13. : Flood frequency analysis is usually carried out using:
(A) Normal distribution
(B) Gumbel distribution
(C) Binomial distribution
(D) Poisson distribution
14. : The ability of an aquifer to store water is represented by:
(A) Porosity
(B) Transmissivity
(C) Storage coefficient
(D) Hydraulic gradient
15. : Drought is best described as:
(A) Prolonged period of excessive rainfall
(B) Prolonged deficiency of precipitation
(C) Sudden flooding event
(D) Reduction in river velocity
16. : Watershed management involves:
(A) Conservation of soil and water resources in a drainage basin
(B) Construction of roads in hilly regions
(C) Designing of underground sewers
(D) Mapping of weather patterns only
17. : Which of the following is a major impact of over-pumping groundwater?
(A) Increased recharge
(B) Land subsidence
(C) Water table rise
(D) Enhanced water quality
18. : The residence time of groundwater is generally:
(A) Few days
(B) Few months
(C) Years to thousands of years
(D) Less than one hour
19. : In hydrology, unit hydrograph represents:
(A) Response of a watershed to a unit depth of effective rainfall
(B) Groundwater depletion rate
(C) Rate of evapotranspiration
(D) Drought duration
20. : The main objective of water resources management is:
(A) To maximize water use without considering sustainability
(B) To balance water demand with sustainable supply
(C) To promote only groundwater extraction
(D) To eliminate hydropower projects
21. : Which of the following is NOT a waterborne disease?
(A) Cholera
(B) Typhoid
(C) Malaria
(D) Dysentery
22. : Artificial recharge of groundwater can be achieved by:
(A) Dams and reservoirs
(B) Recharge wells and percolation tanks
(C) Cloud seeding
(D) Both (A) and (B)
23. : Which river basin is the largest in the world?
(A) Amazon Basin
(B) Nile Basin
(C) Mississippi Basin
(D) Ganga Basin
24. : The ratio of actual evapotranspiration to potential evapotranspiration is known as:
(A) Runoff coefficient
(B) Evapotranspiration index
(C) Aridity index
(D) Crop coefficient
25. : Integrated Water Resources Management (IWRM) is based on the principle of:
(A) Considering only surface water
(B) Coordinated management of water, land, and related resources
(C) Exclusive use of groundwater
(D) Isolating water management from ecosystems