Environmental Studies · Geography

Water Conservation and Management

2,823 Questions

Water conservation and management questions evaluate techniques for preserving water resources, traditional harvesting methods, and modern irrigation systems. Topics include wastewater treatment, groundwater extraction, and the economic role of wetlands. These concepts are essential for environmental studies and geography exams.

Irrigation MethodsWater HarvestingWastewater ManagementHydropower PlantsWetlands ConservationUrban Water Quality

Water Conservation and Management Questions

Multiple choice
  1. For getting large quantity of water

  2. For reducing salinity of water

  3. For making water of tank useful

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In arid regions, high evaporation causes salts to concentrate in tank water. When wells are dug near tanks, the fresher well water mixes with and dilutes the more saline tank water through percolation, making the combined water more usable for irrigation and drinking.

Multiple choice
  1. canals

  2. wells

  3. rivers

  4. all of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Canals, wells, and rivers are all traditional or conventional sources of irrigation in India. These methods have been used for centuries and form the backbone of agricultural water supply. Modern irrigation includes tube wells and drip systems, but canals, wells, and rivers remain fundamental conventional sources.

Multiple choice
  1. rainfall

  2. rivers

  3. ground water

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Irrigation in India comes from multiple sources - rainfall (monsoon dependence), rivers (canals and diversion), and groundwater (wells and tube wells). All three sources are used either individually or in combination depending on the region and infrastructure available.

Multiple choice
  1. Wells

  2. Ponds

  3. Canals

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Canals are considered the most suitable means of large-scale irrigation as they can serve vast areas, support multiple crops, and provide reliable water supply. Wells and ponds are more localized and limited in their coverage. Canals are essential for agricultural productivity in major farming regions.

Multiple choice
  1. all kinds of water

  2. pond water

  3. stagnant fresh water

  4. fresh flowing water

  5. none of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lotic refers to free fresh flowing water.

Multiple choice

With which of the following statements is the author most likely to disagree?

  1. Preservation of wetlands is necessary in the interest of biodiversity and long term survival of humanity.
  2. Tidal wetlands are as prone to human degradation as the inland non-tidal wetlands.
  3. Awareness about the need to protect the wetlands has not filtered across the general populace.

Directions: Read the passage and answer the question that follows:

Wetlands are indeed the vital link between water and land. It is the collective term for marshes, swamps, and bogs, found along the edges of streams, rivers, lakes and coastlines. Wetlands can be found in nearly every country and climatic zone. Indeed wetlands are found from the Tundra to the Tropics and on every continent. They are so varied. Some are wet all the time. Some wetlands are large and some are very small. Many have been altered by human activities such as farming, building of roads, dams and towns. Wetlands are regarded wastelands sources of mosquitoes, flies, snakes and diseases. People had negative views about them and they eliminated them. Original wetlands have been destroyed; some of them have been converted into farmland, some others filled by industrial wastes.
Wetlands vary widely because of topography, climate, hydrology, water chemistry and vegetation. Wetlands are the coastal mangrove forests, lake marshes and seasonally flooded lands along river courses. Palm swamps, sea grass beds, salt flats, and coral reefs are common wetlands. They are of two types: tidal wetlands and non-tidal (inland) wetlands. Tidal wetlands are found along the Atlantic, Pacific, Alaskan and Gulf Coasts. The salt water and fluctuating water levels create a difficult environment. Some plants have adapted to the environment of saline conditions. Inland wetlands are common in the margins of lakes and rivers. They include wet meadows dominated by herbaceous plants, swamps and shrubs and tall trees. The prolonged presence of water favours the growth of specially adapted plants.
States and tribes play a critical role in the protection and management of wetlands. With the growth of education, people have started understanding ecological processes and their attitude towards wetlands have changed. They have recognised the ecological significance of the wetlands; they are a source of valuable natural wealth. They help regulating water levels within watersheds; reduce flood and storm damages; and provide fish and wildlife habitat. They support hunting, fishing and other recreational activities.

Wetlands are the most productive ecosystems in the world. They have been described as biological supermarkets as they provide great volumes of food and attract many animal species. A variety of insects, amphibians, reptiles, birds, fish and mammals are found in these wetlands. Many species of birds, animals, rely on wetlands for food, water and shelter. The microbes, insects and wildlife are part of global cycles for water, nitrogen, and sulphur. They store carbon within their plant communities and thus help to moderate climate conditions.

  1. Only 1

  2. Both 1 and 2

  3. Both 2 and 3

  4. Only 3

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The passage emphasises the importance of wetlands. Hence, option (1) is the correct answer. Nowhere does the passage mention that tidal wetlands are less prone to degradation than non-tidal wetlands. Hence, option (2) is also correct. Option (3) is directly contradicted by the first sentence of the third paragraph and hence, is the right statement.

Multiple choice
  1. the rain water which moves downwards in response to the force of gravity

  2. the portion of water which is free to move between the soil particles

  3. a very thin film of water seen around each soil particle

  4. the water available to the plants

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hygroscopic water exists as a very thin molecular film around each soil particle, held so tightly by imbibition forces that plants cannot absorb it. Gravitational water drains freely. Capillary water is available water between soil particles. Available water refers to water plants can actually use.

Multiple choice
  1. Canals

  2. Wells

  3. Tubewells

  4. Tanks

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wells (including tube wells) are the largest source of irrigation in India, accounting for about 50-60% of total irrigated area. They are widely used because they are dependable, can be dug or drilled anywhere with adequate groundwater, and provide water on demand. Canals, tanks, and other sources cover the remaining irrigated area.

Multiple choice
  1. sea

  2. sewage

  3. springs

  4. rivers

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Springs are natural outlets where underground water under pressure flows to the surface. Sewage refers to wastewater, rivers are surface water channels, and the sea is a large body of salt water - none of these represent underground water emerging naturally.