1. What is the land area drained by a river and its tributaries called?
A Drainage basin
B Floodplain
C Delta
D Estuary
A drainage basin is the area from which a river and its tributaries collect water.
2. What separates one river basin from the next?
A River delta
B Floodplain
C Water divide
D Distributary
A water divide is a high area that separates neighboring drainage basins.
3. A smaller stream that flows into a larger river is called what?
A Estuary
B Tributary
C Delta
D Distributary
A tributary flows into a larger river or stream.
4. What is a branch called when it flows away from the main river?
A Catchment
B Tributary
C Water divide
D Distributary
A distributary branches away from the main river, often near its mouth.
5. What landform can build up where a river deposits sediment at its mouth?
A Water divide
B Gorge
C Meander
D Delta
A delta forms as a river deposits sediment near its mouth.
6. What is a tidal river mouth that widens toward the sea called?
A Estuary
B Waterfall
C Floodplain
D Tributary
An estuary is a tidal river mouth where fresh water meets the sea.
7. The Spiti River joins which major river in Himachal Pradesh?
A Chenab
B Beas
C Sutlej
D Ravi
The Spiti is a tributary of the Sutlej in Himachal Pradesh.
8. The Shyok River is a tributary of which river?
A Ganga
B Indus
C Brahmaputra
D Godavari
The Shyok joins the Indus in the trans-Himalayan region.
9. Near which town does the Son River rise?
A Amarkantak
B Malwa
C Shillong
D Chota Nagpur
The Son rises near Amarkantak in the Maikal Hills.
10. Which river is a tributary of the Ganga and flows through Lucknow?
A Tapi
B Betwa
C Chambal
D Gomti
The Gomti is a tributary of the Ganga and flows through Lucknow.
11. Which Himalayan river is a tributary of the Ganga and flows through Uttarakhand and Uttar Pradesh?
A Koyna
B Ramganga
C Periyar
D Sharavathi
The Ramganga joins the Ganga after flowing through Uttarakhand and Uttar Pradesh.
12. What is the Ganga called after it enters Bangladesh?
A Meghna
B Surma
C Padma
D Jamuna
In Bangladesh, the Ganga is known as the Padma.
13. Looking downstream, from which bank does the Son join the Ganga?
A It does not join the Ganga
B Left bank
C From the sea
D Right bank
The Son is a right-bank tributary of the Ganga.
14. Which river flows through Orchha in Madhya Pradesh?
A Betwa
B Ken
C Chambal
D Son
Orchha is located on the banks of the Betwa River.
15. Which major river flows through Kota in Rajasthan?
A Luni
B Mahi
C Chambal
D Banas
Kota is situated on the Chambal River.
16. The Tapi River rises near which town in Madhya Pradesh?
A Trimbakeshwar
B Multai
C Mahabaleshwar
D Amarkantak
The Tapi rises near Multai in the Satpura range of Madhya Pradesh.
17. Which dam is built across the Hasdeo River in Chhattisgarh?
A Hirakud Dam
B Supa Dam
C Pong Dam
D Hasdeo Bango Dam
Hasdeo Bango Dam is built across the Hasdeo River in Chhattisgarh.
18. Mahi Bajaj Sagar Dam is built across which river?
A Mahi
B Tapi
C Narmada
D Sabarmati
Mahi Bajaj Sagar Dam is built across the Mahi River near Banswara in Rajasthan.
19. Rana Pratap Sagar Dam is built on which river?
A Son
B Betwa
C Chambal
D Banas
Rana Pratap Sagar Dam is one of the dams built on the Chambal River in Rajasthan.
20. Matatila Dam is built across which river?
A Ken
B Betwa
C Yamuna
D Chambal
Matatila Dam is built across the Betwa River.
21. What type of dam is Bhakra Dam?
A Concrete gravity dam
B Arch dam
C Timber dam
D Earthfill embankment dam
The Central Water Commission register classifies Bhakra as a concrete gravity or RCC dam.
22. What type of dam is Pong Dam?
A Rockfill arch dam
B Concrete arch dam
C Masonry gravity dam
D Earthfill embankment dam
The Central Water Commission register lists Pong as an earthfill embankment dam.
23. Farakka Barrage helps divert Ganga water toward which river channel?
A Yamuna-Chambal
B Bhagirathi-Hooghly
C Narmada-Tapi
D Godavari-Krishna
The Farakka feeder canal diverts Ganga water toward the Bhagirathi-Hooghly system.
24. In a multipurpose dam project, which combination of benefits is commonly planned?
A Only salt production
B Only ocean navigation
C Irrigation, power, and flood control
D Only road transport
Multipurpose projects can support irrigation, hydroelectricity, and flood control.
25. What is the main purpose of a spillway at a dam?
A Create a river source
B Release excess reservoir water safely
C Measure river salinity
D Stop all water from flowing downstream
A spillway releases excess water from a reservoir to reduce the risk of overtopping.
26. Where is water usually stored by a dam?
A Only in a canal downstream
B Inside the spillway gates
C In a reservoir upstream of the dam
D In the river delta
A dam holds water in a reservoir on its upstream side.
27. What does siltation gradually do to a reservoir?
A Reduces its storage capacity
B Moves it upstream
C Stops rainfall in the basin
D Turns it into an estuary
Sediment accumulation, or siltation, reduces the space available for water storage.
28. Which part of a river basin supplies runoff to a particular reservoir?
A Its estuary
B Its distributary
C Its delta
D Its catchment area
Rainfall and runoff from a catchment area feed the reservoir.
29. What is a winding loop in a river channel called?
A Meander
B Water divide
C Delta
D Spillway
A meander is a bend or loop in a river channel.
30. An oxbow lake forms when what happens?
A A tributary reaches a mountain source
B A cut-off river meander becomes isolated
C A delta rises above a plateau
D A dam blocks a sea inlet
An oxbow lake forms when a river meander is cut off from the main channel.