Q30. Irrigation supplied by pumping water from wells is classified as which irrigation?
[GPSC Assistant Engineer Civil (2020)]
(A) Flow irrigation
(B) Lift irrigation
(C) Tidal irrigation
(D) Direct flood irrigation
Answer: (B) Lift irrigation
Explanation: A well or tube well requires water to be lifted from below ground to the field, usually using mechanical or electrical pumping. Gravity-based flow irrigation instead relies principally on available hydraulic head.
Q29. Which is an especially important irrigation source in Rajasthan?
[RSMSSB JE (2020)]
(A) Tanks alone
(B) Sea-water canals
(C) Glacial channels
(D) Wells and tube wells
Answer: (D) Wells and tube wells
Explanation: Groundwater extracted through open wells and tube wells has been central to Rajasthan agriculture in many areas. Relative dependence varies among districts and over time, and continued pumping requires attention to aquifer depletion.
2019 Previous-Year Questions
Q28. In which state is bamboo drip irrigation an old traditional practice?
[SSC GD Constable (18 February 2019, Shift 1)]
(A) Chhattisgarh
(B) Meghalaya
(C) Telangana
(D) Maharashtra
Answer: (B) Meghalaya
Explanation: Meghalaya’s bamboo drip systems divert spring water through a series of hollow bamboo channels. The channels progressively reduce discharge and deliver water near plants, providing a low-energy adaptation to steep terrain.
Q27. Which Indian state has the largest total area under irrigation in the examination comparison?
[UP PGT Geography (2019)]
(A) Punjab
(B) Haryana
(C) Uttar Pradesh
(D) Kerala
Answer: (C) Uttar Pradesh
Explanation: Uttar Pradesh’s extensive plains and major canal and tube-well networks give it a very large irrigated area in absolute terms. Percentage of cultivated land irrigated is a different indicator and may favour other states.
Q26. What is an important loss mechanism in overhead sprinkler irrigation?
[DSSSB Junior Engineer Civil (2019)]
(A) No evaporation ever
(B) Evaporation from airborne droplets
(C) Complete elimination of runoff
(D) Zero pumping requirements
Answer: (B) Evaporation from airborne droplets
Explanation: Some sprinkler droplets evaporate before reaching the ground, especially in hot, dry or windy conditions. Designing suitable nozzle sizes, pressure and irrigation times helps reduce these losses and improve application uniformity.
2018 Previous-Year Questions
Q25. Which Rajasthan irrigation project was the first to require sprinkler irrigation throughout its command?
[RPSC RAS Prelims (2018)]
(A) Parban
(B) Dholpur Lift
(C) Narmada
(D) Takli
Answer: (C) Narmada
Explanation: The Narmada Canal Project introduced mandatory sprinkler irrigation for its Rajasthan command. Water conservation is important because the scheme conveys river water into relatively arid areas where broad surface flooding can waste supplies.
Q24. The Mohanpura irrigation project inaugurated in 2018 is located in which Madhya Pradesh district?
[MP Jail Prahari (2018)]
(A) Guna
(B) Sehore
(C) Rajgarh
(D) Raisen
Answer: (C) Rajgarh
Explanation: Mohanpura Dam lies in Rajgarh district and was inaugurated in June 2018. Its purpose includes expanding assured irrigation to agricultural land, supporting crop production in a region affected by variable rainfall.
2017 Previous-Year Questions
Q23. Which is an irrigation method?
[MPPEB Group 2/Subgroup 4 Labour Inspector (10 January 2017, Shift 2)]
(A) Burrow
(B) Furrow
(C) Harrow
(D) Fallow
Answer: (B) Furrow
Explanation: Furrow irrigation uses shallow channels between planted ridges to convey water by gravity. A harrow is a soil-working implement, fallow refers to temporarily uncropped land and burrow has a different ordinary meaning.
Q22. The Polavaram irrigation and hydroelectric project is on which river?
[WBCS Prelims (2017)]
(A) Cauvery
(B) Pennar
(C) Krishna
(D) Godavari
Answer: (D) Godavari
Explanation: Polavaram, also called the Indira Sagar Project, is a multipurpose water scheme on the Godavari in Andhra Pradesh. It is planned to supply irrigation water, hydropower and other benefits across parts of the state.
Q21. Crop irrigation requirement is determined from which primary crop-water quantity?
[GPSC Assistant Engineer Civil (2017)]
(A) Maximum flood depth
(B) Minimum canal width
(C) Evapotranspiration
(D) Reservoir volume only
Answer: (C) Evapotranspiration
Explanation: Evapotranspiration combines soil evaporation and plant transpiration. Crop irrigation requirement is estimated by considering crop evapotranspiration after accounting for effective rainfall, stored soil moisture and other water contributions.
