Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 4

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Weekly Quiz Competition

Question 1
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Which property of a gas helps to fill a large volume of liquefied petroleum gas (LPG) in cylinders?

A
High fluidity

B
High compressibility

C
High inflammability

D
Low density

Solution

Gases are highly compressible, therefore a large volume of gas can be filled in small cylinders.
Question 2
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What happens when sugar is added to water?

A
Volume of water doubles.

B
Volume of water decreases.

C
Volume of water remains the same.

D
None of the above

Solution

When sugar is added to water, particles of sugar occupy spaces between the water molecules and hence the volume of water does not increase.
Question 3
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The fourth state of matter is known as

A
Plasma

B
Supergas

C
Superfluid

D
Semisolid

Solution

The fourth state of matter is known as plasma. The state consists of super energetic and super excited particles. These particles are in the form of ionised gases. The fluorescent tube and neon sign bulbs consist of plasma.
Question 4
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Spreading of fragrance of a burning incense stick in a room shows that

A
Particles of matter have spaces between them.

B
Particles of matter attract each other.

C
Particles of matter are constantly moving.

D
None of the above

Solution

Spreading of fragrance of a burning incense stick in a room shows that particles of matter are constantly moving.
Question 5
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What happens when a liquid becomes a gas?

A
The particles of the liquid absorb heat energy and the distance between them increases.

B
The particles of the liquid absorb the heat energy and force of attraction increases.

C
The particles of the liquid absorb heat energy and kinetic energy decreases.

D
The particles of the liquid absorb heat energy and the distance between them decreases.

Solution

On increasing the temperature of liquids, the kinetic energy of the particles increases.

Due to the increase in kinetic energy, the particles start vibrating with a greater speed.

The heat energy supplied overcomes the forces of attraction between the particles.

The particles leave their fixed position and start moving freely.

A stage is reached when the liquid is converted into a gas.
Question 6
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What is the effect of wind speed on evaporation?

A
No effect of wind speed on evaporation.

B
Evaporation decreases with wind speed.

C
Evaporation increases with wind speed.

D
Evaporation decreases if wind speed is greater than 20 km/hr.

Solution

Evaporation increases with the increase in wind speed, the particles of water vapour move away with the wind, decreasing the amount of water vapour in the surroundings.
Question 7
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Which statement regarding the effect of humidity on evaporation is correct?

A
With the increase in humidity, rate of evaporation decreases.

B
Humidity sometimes increases and sometimes decreases the rate of evaporation.

C
Humidity has no effect on evaporation.

D
With the decrease in humidity, rate of evaporation decreases.

Solution

With the increase in humidity, the rate of evaporation decreases.
Question 8
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The hardness of solids is due to the fact that their particles

A
Have strong forces of attraction between them.

B
Are held very close to each other.

C
Have fixed positions.

D
All of the above

Solution

The particles of solids are closely packed and their positions are fixed due to strong forces of attraction between them.
Question 9
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What kind of energy do particles of matter possess?

A
Sound energy

B
Electrical energy

C
Kinetic energy

D
Solar energy

Solution

Particles of matter are continuously moving hence they possess kinetic energy.
Question 10
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Liquids are called fluids because

A
Liquids do not fill the whole container in which they are placed.

B
Particles of a liquid have spaces between them.

C
Liquids can flow.

D
Particles of liquid have no force of attraction between them.

Solution

Liquids flow and change shape, so they are not rigid and can be called as fluids. Liquids show a property called viscosity. More viscous liquids flow more slowly, while less viscous liquids flow easily.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 4

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Matter in Our Surrounding Test - 4

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SHARING IS CARING

Question 1

High fluidity

High compressibility

High inflammability

Low density

Solution

Question 2

Volume of water doubles.

Volume of water decreases.

Volume of water remains the same.

None of the above

Solution

Question 3

Plasma

Supergas

Superfluid

Semisolid

Solution

Question 4

Particles of matter have spaces between them.

Particles of matter attract each other.

Particles of matter are constantly moving.

None of the above

Solution

Question 5

The particles of the liquid absorb heat energy and the distance between them increases.

The particles of the liquid absorb the heat energy and force of attraction increases.

The particles of the liquid absorb heat energy and kinetic energy decreases.

The particles of the liquid absorb heat energy and the distance between them decreases.

Solution

Question 6

No effect of wind speed on evaporation.

Evaporation decreases with wind speed.

Evaporation increases with wind speed.

Evaporation decreases if wind speed is greater than 20 km/hr.

Solution

Question 7

With the increase in humidity, rate of evaporation decreases.

Humidity sometimes increases and sometimes decreases the rate of evaporation.

Humidity has no effect on evaporation.

With the decrease in humidity, rate of evaporation decreases.

Solution

Question 8

Have strong forces of attraction between them.

Are held very close to each other.

Have fixed positions.

All of the above

Solution

Question 9

Sound energy

Electrical energy

Kinetic energy

Solar energy

Solution

Question 10

Liquids do not fill the whole container in which they are placed.

Particles of a liquid have spaces between them.

Liquids can flow.

Particles of liquid have no force of attraction between them.

Solution

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