Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 28

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Weekly Quiz Competition

Question 1
1 / -0

What is the effect of pressure on gas?

A
Volume of gas decreases with increase in pressure

B
Volume of gas increases with increase in pressure

C
Both a and b

D
Pressure has no effect on gas

Solution

The volume of gas decreases with an increase in pressure. This leads to the conversion of the gaseous state into a liquid state and eventually into a solid-state. The volume of the gas decreases by applying pressure on gases because gases are compressible.
Question 2
1 / -0

Three containers X, Y and Z as shown were filled with water and then left near an open window. The purpose was to find out whether the exposed surface area of the water affects the rate of evaporation of water. Why was the experiment NOT a fair one?

A
The exposed surface areas were different

B
Different types of containers were used

C
The amount of water in the containers was different

D
The containers were not covered

Solution

The rate of evaporation is affected by the exposed surface area of water.
Higher the exposed surface area, the higher the rate of evaporation.
The experiment is not a fair one because the amount of water in the content are different.
Question 3
1 / -0

The inter-particle attractive force ______ with increasing distance between particles.

A
increases

B
decreases

C
does not change

D
None of the above

Solution

As the distance between the particles reduces, it means they will be held together weakly. Consequently, the force of attraction between the particles decreases.
Hence, the correct option is B.
Question 4
1 / -0

Which of the following has a direct effect on the kinetic energy of particles?

A
Pressure

B
Potential energy

C
Temperature

D
All of the above

Solution

When the temperature of a substance is increased collision, rate between particles increases which increases the speed of particles which implies that the kinetic energy of particles is directly proportional to the temperature of the substance.
Question 5
1 / -0

Coolers are more effective in areas with ___________.

A
low humidity

B
high humidity

C
both A and B

D
none of above

Solution

A decrease in humidity increases the rate of evaporation. Coolers work on the concept of evaporation. Evaporation causes cooling when liquid particles absorb energy from the surroundings to regain the lost energy during evaporation. This absorption of energy from surrounding cools the area.
In high humid areas, the rate of evaporation is low and making cooler not very effective. On the other hand, in low humid areas, the rate of evaporation is high which causes cooling and thus, coolers are more effective in such areas.
Question 6
1 / -0

The state or phase of a given set of matter can change depending on _____________.

A
temperature

B
pressure

C
Both a and b

D
None of above

Solution

The state or phase of a given set of matter can change depending on pressure and temperature conditions, transitioning to other phases as these conditions change to favor their existence; for example, solid transitions to liquid with an increase in temperature. When pressure increases on a substance in a gas phase it can cause the substance to be condensed or a decrease in pressure on the substance can cause it to vaporize.
Hence, option $$C$$ is correct.
Question 7
1 / -0

Based on the statements given below, choose the correct answer.

P: Some sugar can be added to a glass full of water without causing an overflow.
Q: Liquids have spaces present between the molecules.

A
P and Q are true and Q explains P

B
P and Q are true but Q does not explain P

C
Only P is true

D
Only Q is true

Solution

Liquids have indefinite shape. They have weak interparticle forces of attraction, so they are not closely packed. They have empty spaces between the particles. When small amount of sugar is added, the sugar particles occupy these empty spaces and do not cause an overflow of the water.

Hence, P and Q are true and Q correctly explains P.
Question 8
1 / -0

__________ of ice is the energy that is used to change the state of ice to water.

A
Latent heat of fusion

B
Latent heat of vaporization

C
Conduction

D
All of above

Solution

When solid changes into a liquid, the heat required for changing the state without rising in temperature is called latent heat of fusion.

The $$\text {latent heat of fusion}$$ of ice is the energy that is used to change the state of ice (solid) to water (liquid).

Option $$A$$ is correct.
Question 9
1 / -0

Which of the following factor can affect evaporation?

A
High pressure on liquid surface

B
Specific heat

C
Latent energy

D
All of above

Solution

Evaporation is the surface phenomenon in which if high pressure is present on the surface of the liquid, it reduces the rate of evaporation.
Storms are examples of high-pressure systems that slow down evaporation.

Therefore, the option is $$A$$.
Question 10
1 / -0

Which of the following represents true statement(s)?

A
Solids will not break under force.

B
It is easy to change shape of solids as they are highly compressible.

C
Both of the above

D
None of the above

Solution

Solids are breakable when force applied. They are least compressible hence are rigid thus shape cannot be changed. None of the above statements are true.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 28

Result

Matter in Our Surrounding Test - 28

Score

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SHARING IS CARING

Question 1

Volume of gas decreases with increase in pressure

Volume of gas increases with increase in pressure

Both a and b

Pressure has no effect on gas

Solution

Question 2

The exposed surface areas were different

Different types of containers were used

The amount of water in the containers was different

The containers were not covered

Solution

Question 3

increases

decreases

does not change

None of the above

Solution

Question 4

Pressure

Potential energy

Temperature

All of the above

Solution

Question 5

low humidity

high humidity

both A and B

none of above

Solution

Question 6

temperature

pressure

Both a and b

None of above

Solution

Question 7

P and Q are true and Q explains P

P and Q are true but Q does not explain P

Only P is true

Only Q is true

Solution

Question 8

Latent heat of fusion

Latent heat of vaporization

Conduction

All of above

Solution

Question 9

High pressure on liquid surface

Specific heat

Latent energy

All of above

Solution

Question 10

Solids will not break under force.

It is easy to change shape of solids as they are highly compressible.

Both of the above

None of the above

Solution

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