Water Test

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Water Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is correct?

A
Ocean water is fit for agricultural and industrial needs

B
Oceans play an important role in supplying the water that we use

C
Ocean water is not saline

D
None of the above

Solution

Oceans play an important role in supplying the water that we use. Oceans provide evaporated water to the water cycle and it is the most important source of water vapor in the water cycle. Oceans are the storehouse of water in nature and run the water cycle.

Hence, option $$B$$ is correct.
Question 2
1 / -0

Where can rainwater harvesting not be practised?

A
Playground

B
Rooftops

C
Bathroom

D
Can be used in all of the above

Solution

Rainwater harvesting cannot be practiced in bathroom as the bathroom is a closed area and rain water cannot directly come into it. Playgrounds and rooftops are open areas and rainwater directly falls on them. In these areas, we can practice rainwater harvesting.
Question 3
1 / -0

Which of the following situations is classified as suffering from water scarcity?
(a) Region with high annual rainfall.
(b) Region having low annual rainfall and large population.
(c) Region having high annual rainfall but water is highly polluted.
(d) Region having low rainfall and low population.

A
a and b

B
a and d

C
c and d

D
b and c

Solution

Region having low annual rainfall and large population can suffer from water scarcity because of overuse of water resources. Region having high annual rainfall but water is highly polluted also suffers from water scarcity because polluted water is unusable for humans.
Question 4
1 / -0

The water in the oceans and seas has many ______ dissolved in its.

A
bases

B
iron

C
acids

D
salts

Solution

The water in the oceans and seas has many salts dissolved in it. The most abundant ions in sea water are $$Cl^-, Na^+. SO_4^{2-}, Mg^{2+}, K^+$$.
Question 5
1 / -0

Which of the following is true about rooftop rainwater harvesting?

A
The rainwater is transferred from the rooftop to a storage tank, present above the ground, through pipes.

B
This water may contain soil from the roof and need filtering before it is used.

C
Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground.

D
All of the above.

Solution

Following are true about Rooftop rainwater harvesting:
1) The rainwater is transferred from the rooftop to a storage tank, present above the ground, through pipes.
2) This water may contain soil from the roof and need filtering before it is used.
3) Instead of collecting rainwater in a tank, the pipes can go directly into a pit in the ground.
Question 6
1 / -0

Which of the following techniques are used for rainwater harvesting?

A
Rooftop rainwater harvesting

B
Water is allowed to go into the ground directly from the roadside drains that collect rainwater.

C
Both of the above

D
None of the above
Solution
The following techniques are used for rainwater harvesting
- Rooftop rainwater harvesting: The rainwater is collected from the rooftop to a storage tank, through pipes.
- Water is allowed to go into the ground directly from the roadside drains that collect rainwater.
Question 7
1 / -0

The ultimate source of water on the earth is

A
oceans and seas

B
spring and wells

C
rivers and lakes

D
rain

Solution

The ultimate source of water on the earth is rain as every water cycle begins with rain and ends in rain. Rain water is the purest form of water that is available to us.
Question 8
1 / -0

Rainwater harvesting is collecting & storing rainwater, which includes activities aimed at:

A
harvesting surface water

B
groundwater

C
prevention of losses through evaporation and seepage

D
all of the above

Solution

In general, water harvesting is the activity of the direct collection of rainwater. The rainwater collected can be stored for direct use or can be recharged into the groundwater. Rain is the first form of water that we know in the hydrological cycle, hence is a primary source of water for us. It is also the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff).
Hence, option $$D$$ is correct.
Question 9
1 / -0

Largest amount of fresh water is found in:

A
Lakes and streams

B
Underground

C
Polar ice and glaciers

D
Rivers

Solution

Over 68 percent of freshwater is found in polar ice & glaciers, while 30 percent is found in groundwater, 0.3 percent is found in surface water of lakes rivers & ponds.

So, correct option is $$C$$.
Question 10
1 / -0

Clouds are:

A
Tiny drops of water floating in the air

B
Mixture of dust and water vapour

C
Particles of water vapour

D
Raindrops in the air

Solution

Water vapour condenses in the air and forms tiny droplets of water that float foamy in air, known as clouds.

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Re-Attempt Weekly Quiz Competition

Water Test - 10

Result

Water Test - 10

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SHARING IS CARING

Question 1

Ocean water is fit for agricultural and industrial needs

Oceans play an important role in supplying the water that we use

Ocean water is not saline

None of the above

Solution

Question 2

Playground

Rooftops

Bathroom

Can be used in all of the above

Solution

Question 3

a and b

a and d

c and d

b and c

Solution

Question 4

bases

iron

acids

salts

Solution

Question 5

The rainwater is transferred from the rooftop to a storage tank, present above the ground, through pipes.

This water may contain soil from the roof and need filtering before it is used.

Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground.

All of the above.

Solution

Question 6

Rooftop rainwater harvesting

Water is allowed to go into the ground directly from the roadside drains that collect rainwater.

Both of the above

None of the above

Solution

Question 7

oceans and seas

spring and wells

rivers and lakes

rain

Solution

Question 8

harvesting surface water

groundwater

prevention of losses through evaporation and seepage

all of the above

Solution

Question 9

Lakes and streams

Underground

Polar ice and glaciers

Rivers

Solution

Question 10

Tiny drops of water floating in the air

Mixture of dust and water vapour

Particles of water vapour

Raindrops in the air

Solution

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