Tag: safety and first aid

Questions Related to safety and first aid

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

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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

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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

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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

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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

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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

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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'

Which of the following processes represents X?
River -> X -> Clouds

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

  1. Respiration

  2. Transpiration

  3. Combustion

  4. Evaporation

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Correct Option: D
Explanation:

In the given figure, X is evaporation. Evaporation is the process of conversion of water into vapour. Water vapour rises up into the atmosphere and cools down to form clouds.

So, the correct answer is option D.

The largest part of hydrosphere is 

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

  1. Pacific ocean

  2. Atlantic ocean

  3. Indian ocean

  4. None of the above

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Correct Option: A

Which of the following explains drought?

biology water and air and their importance the lithosphere and the hydrosphere first aid safety and first aid

  1. Low rainfall than requirement

  2. High rainfall than requirement

  3. Low pressure in atmosphere

  4. High pressure in atmosphere

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Correct Option: A

Which of the following are included in hydrosphere?

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

  1. Liquid and frozen surface waters

  2. Groundwater held in soil and rock

  3. Atmospheric water vapor

  4. All of the above

Show answer
Correct Option: D
Explanation:

The hydrosphere is the total amount of water present on the planet which includes the surface water, underground water and in the air (Atmosphere) as water vapor. Hydrosphere can be liquid, ice or vapor. 

So the correct option is 'all of the above'.