Water Test

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Water Test - 8

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Weekly Quiz Competition

Question 1
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Which of the following are the correct processes for the given conversions in the state of water?

(i) From liquid to gaseous state
(ii) From gaseous to liquid state

A
(i) Condensation
(ii) Freezing

B
(i) Vaporisation
(ii) Condensation

C
(i) Sublimation
(ii) Freezing

D
(i) Evaporation
(ii) Melting

Solution

Water is converted from liquid to vapour state by evaporation (at a temperature below the boiling point) or Vaporisation (at the boiling point).
The conversion of water vapour to liquid water is called condensation and it is brought about by cooling.
Question 2
1 / -0

Which is the natural source of fresh water, which recharges the groundwater?

A
Well

B
River

C
Rainwater

D
Ocean

Solution

The water table is recharged by the rainwater, which percolates through the layers of soil and collects below the hard rock as groundwater.
Question 3
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Read the given statements and select the correct option.

Statements 1: The level of groundwater below the surface of the earth at a given place is known as water table.
Statements 2: Extensive use of groundwater in cities for domestic and industrial purposes is resulting in the lowering of the water table.

A
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

B
Both statements 1 and 2 are true, but statement 2 is not the correct explanation of statement 1.

C
Statement 1 is true and statement 2 is false.

D
Both statements 1 and 2 are false.

Solution

Both the statements are correct.
In cities, the extensive use of water for the agricultural as well as industrial purposes is a cause of depletion of the water table.
However, the second statement is not an explanation for the first.
Question 4
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By which of the following processes does water leave the earth's surface and enters the atmosphere?

A
Crystallisation

B
Precipitation

C
Evaporation

D
Condensation

Solution

Water enters the earth's atmosphere as vapour after evaporation from the water bodies and also by transpiration from the plants.
Question 5
1 / -0

Which of the following is not a solid form of water?

A
Hail

B
Snow

C
Glacier

D
Rain

Solution

The return of water vapour to the earth by condensing is called precipitation.
Hail and snow are the solid forms of precipitation, whereas rain and dew are the liquid forms.
Question 6
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By which of the following processes does water change into its vapour form?

A
Transpiration

B
Condensation

C
Infiltration

D
Precipitation

Solution

Transpiration is the process of the movement of water molecules through the plant and its evaporation from the aerial parts, such as leaves, stems and flowers. The state of water changes from liquid to vapour during transpiration.
Question 7
1 / -0

Which of the following processes is involved in the formation of clouds from water vapour?

A
Melting

B
Evaporation

C
Frost formation

D
Condensation

Solution

The water vapour, on reaching the upper layers of the atmosphere, cools and condenses on the nuclei of dust and smoke particles to form clouds.
Question 8
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Which of the following pairs is not correctly matched?

A
Rainwater - Purest form of water

B
River water - Largest source of water on earth

C
Lakes - A large area of water surrounded by land

D
Seawater - Source of common salt

Solution

Oceans are the largest source of surface water, comprising approximately 97 percent of the earth's surface water.
Question 9
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Read the given statements and select the correct option.

Statement 1: Water vapour is added to the air by the process of evaporation from the water bodies.
Statement 2: Water vapour is added into the air by the process of transpiration from the plants that grow on the surface of land.

A
Both statements are correct.

B
Both statements are incorrect.

C
Only statement 1 is correct.

D
Only statement 2 is correct.

Solution

Both the given statements are correct.
Water vapour is added to the air by the process of evaporation from the surface of water bodies by absorbing the heat from the Sun. Water vapour is also added to the air by the process of transpiration from the exposed parts of plants that grow on the surface of land.
Question 10
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In which of the following cases will evaporation of water be the fastest if equal quantity of water is taken in each of the cases?

A
Water kept in a tumbler in the sunlight

B
Water kept in a tray in the sunlight

C
Water kept in a tumbler in the shade

D
Water kept in a bowl in the sunlight

Solution

Rate of evaporation increases with increase in temperature.
Rate of evaporation increases with increase in the surface area exposed.
Hence, evaporation will be fastest when water is poured in a tray and kept in the sunlight.
Question 11
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Directions For Questions

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Which of the following processes is represented by A?

A
Evaporation

B
Condensation

C
Precipitation

D
Transpiration

Solution

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapour and is released to the atmosphere. Transpiration is evaporation of water from the plant leaves.
Question 12
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Read the given statements and select the correct option.

Assertion (A): Water dissolves more substances than any other liquid.
Reason (R): The physical and chemical properties of water make it a good solvent.

A
Both A and R are individually true and R is the correct explanation of A.

B
Both A and R are individually true, but R is not the correct explanation of A.

C
A is true, but R is false.

D
Neither A nor R is true.

Solution

The physical and chemical properties of water make it a good solvent.
Water dissolves more substances than any other liquid.
Question 13
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Government declared Aman's district as a drought affected area despite the moderate rainfall in that place. Researchers explained the case by stating the factors which could cause the soil to lose water.

Soil loses water in drought affected areas due to

A
excessive evaporation and transpiration

B
excessive respiration and evaporation

C
excessive condensation and evaporation

D
excessive transportation of water

Solution

Soil loses water by the process of evaporation which may increase due to high land and water temperatures and cause drought.
Excessive loss of water by transpiration may also lead to drought.
Question 14
1 / -0

Directions For Questions

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Underground water resources lie beneath the earth's surface. Which of the given areas in India have abundant underground water?

A
A and B

B
A and C

C
B and C

D
A, B and C

Solution

This is correct. The northern plains and the coastal regions in India have abundant underground water.
Question 15
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Directions For Questions

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Naturally occurring bodies of standing water are called inland lakes.

Which of the following is/are the main source(s) of water for inland lakes?

A
A and D

B
B and C

C
C and D

D
D only

Solution

Inland lakes are landlocked water bodies. Their principal source of water is precipitation or runoff, supplemented by groundwater from the immediate drainage area.

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Water Test - 8

Result

Water Test - 8

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Question 1

(i) Condensation(ii) Freezing

(i) Vaporisation(ii) Condensation

(i) Sublimation(ii) Freezing

(i) Evaporation(ii) Melting

Solution

Question 2

Well

River

Rainwater

Ocean

Solution

Question 3

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

Both statements 1 and 2 are true, but statement 2 is not the correct explanation of statement 1.

Statement 1 is true and statement 2 is false.

Both statements 1 and 2 are false.

Solution

Question 4

Crystallisation

Precipitation

Evaporation

Condensation

Solution

Question 5

Hail

Snow

Glacier

Rain

Solution

Question 6

Transpiration

Condensation

Infiltration

Precipitation

Solution

Question 7

Melting

Evaporation

Frost formation

Condensation

Solution

Question 8

Rainwater - Purest form of water

River water - Largest source of water on earth

Lakes - A large area of water surrounded by land

Seawater - Source of common salt

Solution

Question 9

Both statements are correct.

Both statements are incorrect.

Only statement 1 is correct.

Only statement 2 is correct.

Solution

Question 10

Water kept in a tumbler in the sunlight

Water kept in a tray in the sunlight

Water kept in a tumbler in the shade

Water kept in a bowl in the sunlight

Solution

Question 11

Evaporation

Condensation

Precipitation

Transpiration

Solution

Question 12

Both A and R are individually true and R is the correct explanation of A.

Both A and R are individually true, but R is not the correct explanation of A.

A is true, but R is false.

Neither A nor R is true.

Solution

(i) Condensation
(ii) Freezing

(i) Vaporisation
(ii) Condensation

(i) Sublimation
(ii) Freezing

(i) Evaporation
(ii) Melting