Tag: sources of water

Questions Related to sources of water

Which of the following is most important in water cycle?

evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Transpiration through leaves

  2. Evaporation from the oceans

  3. Percolation of water into the ground

  4. Absorption of capillary water by plants

Show answer
Correct Option: B
Explanation:

Evaporation from the oceans is the most important in water cycle, because it comprises of the major part of global water cycle.

Life is sustainable with water only because 

evs sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. It makes 90% of the protoplasm

  2. Translocation of nutrients inside the body occurs wiith the help of water

  3. Water loss in form of sweating helps to maintain body temperature

  4. All of these

Show answer
Correct Option: D
Explanation:

Protoplasm is the material comprising the living contents of a cell. It consists of 70- 90% water along with the minerals, sugars, amino acids, proteins, enzymes, etc. The translocation of nutrients inside the body occurs viz. blood which also major consists of water. In an environment with excessive heat, water loss in the form of sweating keeps the body cool. Thus, water maintains body temperature. 

So, the correct answer is 'All of the above'.

Which one of the following fish is being illegally introduced for aquaculture purposes and is posing a threat to the indigenous catfishes of Indian rivers?

evs sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Clarias gariepinus

  2. Nile perch

  3. Climbing perch

  4. Protopterus

Show answer
Correct Option: A
Explanation:

Clarias gariepinus, the African catfish has been illegally introduced for aquaculture purposes and is posing a threat to the indigenous catfishes of Indian rivers.

The water cycle in nature involves which of the following processes sequentially?

evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Evaporation, precipitation and condensation

  2. Precipitation, condensation and evaporation

  3. Evaporation, condensation and precipitation

  4. Condensation, evaporation and precipitation

Show answer
Correct Option: C
Explanation:

Water evaporates as water vapour from water bodies like lakes, rivers, seas, etc. It then cools as it moves up and condenses to form clouds of tiny water droplets. When the cloud is saturated with warm droplets, precipitation occurs in the form of rain.

Primary source of water is

evs sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Rivers

  2. Ground water

  3. Lakes

  4. Rainwater

Show answer
Correct Option: D
Explanation:

The primary source of water on the surface of the earth is rain. Rain is mainly formed due to the precipitation of vapours accumulated due to evaporation. Some part of the rainwater is available as ground water which can be used in case of adversity.

So, the correct answer is option D.

The continuous movement of water on surface of the earth is described as

evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Water movement

  2. Natural flow

  3. Water cycle

  4. All of the above

Show answer
Correct Option: C
Explanation:

The water cycle involves the continuous movement of water on, above and below the surface of the Earth. The surface water evaporates by the process of evaporation which condenses into tiny droplets which falls on the earth as rain as a source of the atmospheric cycle. Surface waters and atmospheric cycles are thus overlaps in hydrological cycles. Thus, the correct answer is option C.

All of the following are the properties of water except ____________.

evs sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Hydrophilic properties

  2. Hydrophobic properties

  3. Very good solvent

  4. Density as a solid is less than that as a liquid

  5. Strong surface tension

Show answer
Correct Option: B

Which of the following plays a very important role in causing rainfall?

evs sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Factories

  2. Vehicles

  3. Plants

  4. None of the above

Show answer
Correct Option: C
Explanation:

Transpiration is the process in which plants lose water as water vapor during photosynthesis. This water is added to the moisture in air saturating it and hence generating rainfall. Thus the correct answer is option C.

Water cycles through the biosphere in all of the following processes except     

evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Precipitation

  2. Condensation

  3. Transpiration

  4. Decomposition

  5. Runoff

Show answer
Correct Option: D
Explanation:
A. When the water vapour in the atmosphere condenses and fall in the form of rain, hail, snow etc., it is called precipitation.
B. Condensation is the conversion of a gas into liquid when the temperature is lowered down.
C. Transpiration is the loss of water in vapour form from the surface of leaves through minute pores called stomata.
D. Decomposition is the process of breakdown of complex organic materials into simpler ones.
E. Runoff is the overflow or the flow of excess water over the earth's surface from any water source.
Hence, water cycles through the biosphere in all of the given processes except decomposition.
So, the correct answer is 'Decomposition'.

In the water cycle, the process by which water is returned to the atmosphere is known as 

evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

  1. Runoff

  2. Condensation

  3. Evaporation

  4. Precipitation

  5. Photosynthesis

Show answer
Correct Option: C,E
Explanation:

Evaporation and photosynthesis are two process through which water is returned to the atmosphere during water cycle.

So, the correct answer is 'Evaporation and Photosynthesis'