Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is not a property of particles of matter?

A
The particles of matter are extremely small.

B
The particles of matter have spaces between them.

C
The particles of matter are in stationary state.

D
The particles of matter attract each other.

Solution

The particles of matter are continuously moving. Therefore, option (C) is incorrect.
Question 2
1 / -0

On heating, temperature _______, particles __________energy, intermolecular space ___________ and force of attraction ____________.

A
falls, lose, increases, decreases

B
rises, gain, increases, decreases

C
falls, lose, decreases, increases

D
rises, gain, decreases, increases

Solution

On heating, the temperature rises, particles gain energy as the kinetic energy increases, intermolecular space increases as they get separated from each other and the force of attraction decreases as the particles go far away from each other.
Question 3
1 / -0

Evaporation occurs at _______ temperature.

A
high

B
low

C
all

D
None of the above

Solution

Evaporation does not need any particular temperature, it happens at all temperature.
Question 4
1 / -0

Why does perspiration leave a cooling effect on our body?

A
The sweat particles absorb heat from the body and get converted into vapour, thereby reducing its temperature

B
The sweat particles release energy into the atmosphere and the temperature of the surroundings decrease.

C
The sweat particles absorb energy from the body and get converted into vapour, thereby increasing the temperature.

D
None of the above

Solution

It happens due to evaporative cooling. The sweat gets vaporized from the skin into the atmosphere, by absorbing heat from the body. Thus the body cools down as it loses heat.
Question 5
1 / -0

On decreasing the surface area, the rate of evaporation _________.

A
Increases

B
Decreases

C
Remains same

D
Data insufficient

Solution

On decreasing the surface area, fewer particles are exposed to the atmosphere. So the rate of evaporation decreases.
Question 6
1 / -0

Select the characteristics of particles of matter.

A
There is space between the particles of matter

B
The particles of matter are continuously moving about their mean position

C
The particles of matter attract each other

D
All of these

Solution

Space exists between the particles of matter. The particles of matter are continuously moving about their mean position. The particles of matter attract each other due to intermolecular forces of attraction. Hence, all are the characteristics of matter and, so option D is correct.
Question 7
1 / -0

The diagram given shows a piston fitted in a cylinder. The most suitable inference that can be drawn from it is that _____________.

A
the piston is smooth

B
the particles can be compressed or brought closer by applying pressure

C
the handle of piston is long

D
None of the above

Solution

We can see from the diagram that the particles comes closer as we push the piston down i.e. by applying pressure on the particles.
Question 8
1 / -0

In which case the rate of evaporation is higher?

(1) A test tube filled with water.
(2) China dish filled with water.

A
1

B
2

C
Both 1 and 2 have same rate

D
Data insufficient

Solution

The rate of evaporation increases with surface area. The china dish offers a greater surface area, thus, exposing more particles to the atmosphere for evaporation. As a result, the rate of evaporation will be higher for the 2nd case.
Question 9
1 / -0

As the level of humidity decreases, the rate of evaporation __________.

A
increases

B
decreases

C
remains same

D
Data insufficient

Solution

With decrease in humidity, the amount of water vapour in the air decreases. This increases air's moisture intake, and as a consequence, the rate of evaporation increases.
Hence, option A is correct.
Question 10
1 / -0

On increasing the temperature, the rate of evaporation _________.

A
increases

B
decreases

C
remains same

D
Data insufficient

Solution

On the increasing temperature, the energy of particles increases, therefore, it is easy to convert to vapor phase as compared to particles that have less or no energy. Hence the rate of evaporation increases with increasing temperature.
Option $$A$$ is correct.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 25

Result

Matter in Our Surrounding Test - 25

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SHARING IS CARING

Question 1

The particles of matter are extremely small.

The particles of matter have spaces between them.

The particles of matter are in stationary state.

The particles of matter attract each other.

Solution

Question 2

falls, lose, increases, decreases

rises, gain, increases, decreases

falls, lose, decreases, increases

rises, gain, decreases, increases

Solution

Question 3

high

low

all

None of the above

Solution

Question 4

The sweat particles absorb heat from the body and get converted into vapour, thereby reducing its temperature

The sweat particles release energy into the atmosphere and the temperature of the surroundings decrease.

The sweat particles absorb energy from the body and get converted into vapour, thereby increasing the temperature.

None of the above

Solution

Question 5

Increases

Decreases

Remains same

Data insufficient

Solution

Question 6

There is space between the particles of matter

The particles of matter are continuously moving about their mean position

The particles of matter attract each other

All of these

Solution

Question 7

the piston is smooth

the particles can be compressed or brought closer by applying pressure

the handle of piston is long

None of the above

Solution

Question 8

1

2

Both 1 and 2 have same rate

Data insufficient

Solution

Question 9

increases

decreases

remains same

Data insufficient

Solution

Question 10

increases

decreases

remains same

Data insufficient

Solution

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