Tag: evs

Questions Related to evs

Water is required in our daily life; as per United Nations what is the minimum amount of amount required for a single person to maintain proper hygiene?

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

  1. 50 liters/day

  2. 20 liters/day

  3. 65 liters/day

  4. 100 liters/ day

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Correct Option: A
Explanation:


Amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of 50 liters per person per day.

So, the correct answer is '50 liters/day' 

The water is bad conductor of electricity.

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

  1. True

  2. False

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Correct Option: B
Explanation:

Distilled water is a bad conductor of electricity as it is electrically neutral. However, tap water is a good conductor of electricity as it may contain some impurities and therefore, the ions flow resulting in the conductivity. So, this statement is "false".

Which sea is referred to as an oceanic desert?

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

  1. Red Sea

  2. Sargasso Sea

  3. Arabian Sea

  4. Sea of Japan

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Correct Option: B

Water vapor contains a huge amount of stored energy known as

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

  1. Latent heat

  2. Solar energy

  3. Stored heat

  4. Mechanical energy

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Correct Option: A

If all the water vapor in the atmosphere were to condense and fall to the ground, the globe would be covered with about of water.

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

  1. 1 millimeter

  2. 1 inch

  3. 1 foot

  4. 1 meter

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Correct Option: B

Which of the following is 'water wise habit'?

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

  1. Mop the floor instead of washing

  2. Keeping tap on while bath

  3. Washing your car daily

  4. Using excess water in kitchen

Show answer
Correct Option: A
Explanation:

Water wise habit is to conserve water by using alternatives to water or reducing the usage of water. Water is used for cleaning the floor, utensils etc 

Here instead of washing the floor it can be mopped
So, the correct answer is 'Mop the floor instead of washing'

What does high velocity in river cause?

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

  1. Reaeration

  2. Currents

  3. Hydrography

  4. Turbidity

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Correct Option: A

An example of lotic system

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

  1. Pond

  2. River

  3. Lake

  4. Reservoir

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Correct Option: B

The top layer of the lake is called as

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

  1. Thermocline

  2. Epilimnion

  3. Thermonion

  4. Hypolimnion

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Correct Option: B

What is chemical formula of water?

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

  1. $H _{2}SO _{4}$

  2. $H _{2}O$

  3. $H _{2}S$

  4. $H _{2}$

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Correct Option: B