Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 26

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Weekly Quiz Competition

Question 1
1 / -0

The rate of evaporation does not depends on:

A
surface area

B
wind speed

C
humidity

D
type of particles

Solution

The rate of evaporation does not depend on the type of particles because it completely depends upon the surface area of the liquid if the surface area is large evaporation will be maximum.
Evaporation also depends upon wind speed, if the wind is flowing at a higher speed, then the rate of evaporation increases.
The same will be applied in the case of humidity. Humidity decreases the rate of evaporation.
Therefore, the correct option is $$D$$.
Question 2
1 / -0

During hot sunny day, people sprinkle water on the roof because:

A
they have more water to sprinkle

B
water is cheapest thing available

C
it has high latent heat of vapourisation

D
None of the above

Solution

People sprinkle water on the rooftop during sunny days as water has a high latent heat of vaporisation so it will absorb more heat and make the rooftop cool.

Option $$C$$ is correct.
Question 3
1 / -0

The force of attraction among the constituent particles is ________ in solids, ________ in liquids and __________ in gases.

A
weak, very weak, very high

B
weak, weak, very weak

C
very high, weak, very weak

D
very high, very weak, high

Solution

The force of attraction among the constituent particles is $$\underline {very\ high}$$ in solids, $$\underline {weak}$$ in liquids and $$\underline {very\ weak}$$ in gases. So, there are more spaces between the particles of gases, lesser between those of liquids, and least in solids. This is responsible for the respective properties of solids, liquids, and gases.
Question 4
1 / -0

The particles in solid are ________ packed, in liquid are ________ packed and in gas ___________ packed.

A
very tightly, less loosely, very loosely

B
less loosely, very loosely, very tightly

C
very loosely, very tightly, less loosely

D
tightly, tightly, tightly

Solution

1. In solid atoms are very tightly packed because atoms are very close to each other.

2. Liquids have the arrangement of the atoms looser than that of in solid.

3. In gases, atoms are very loosely packed because of the high kinetic energy of atoms in the gas phase.

Hence, option A is correct.
Question 5
1 / -0

Spreading of smell proves that _____________.

A
matter is made up of small particles

B
the particles in matter are in motion

C
Both A and B

D
None of above

Solution

When we use perfume, tiny particles of air collide with tiny particles of perfume which is liquid. The particles of perfume spread in air due to these collisions. Hence, we can feel the smell of perfume. Spreading of smell proves that matter is made up of small particles moving randomly.
Question 6
1 / -0

The rate of evaporation increases with:

A
increase of surface area

B
increase of temperature

C
increase in wind speed

D
all of above

Solution

If the surface area is increased, the rate of evaporation increases. With the increase of temperature, more number of particles get enough kinetic energy to go into the vapour state. With the increase in wind speed, the particles of water vapour move away from the wind, decreasing the amount of water vapour in the surrounding.
So, option $$D$$ is correct.
Question 7
1 / -0

In liquids, there is ____________ and ____________ between particles.

A
strong force of attraction, more spacing

B
weaker force of attraction, more spacing

C
weaker force of attraction, less spacing

D
strong force of attraction, less spacing

Solution

Liquids have no fixed shape but have a fixed volume. They take up the shape of the container in which they are kept. In liquids, there is a weaker force of attraction and more spacing between the particles.
Hence, they are not rigid and can flow.
Question 8
1 / -0

While mixing sugar with water, the level of water does not increase because _____________.

A
matter has large particles which destroy water particles

B
tiny particles of sugar adjust among the space between tiny particles of water

C
tiny particles of sugar destroy large particles of water

D
None of the above

Solution

While mixing sugar with water, the level of water does not increase because tiny particles of sugar adjust among the space between tiny particles of water. This shows that space is present between the molecules of liquids.
Question 9
1 / -0

The presence of a significant number of charge carriers makes plasma as _____________.

A
electrically conductive

B
non-conductive

C
ductile

D
compressible

Solution

Plasma is one of the four fundamental states of matter, the others being solid, liquid, and gas. The presence of a significant number of charge carriers makes plasma electrically conductive, so that it responds strongly to electromagnetic fields.
Question 10
1 / -0

Evaporation is indirectly proportional to ___________.

A
temperature

B
surface area

C
humidity

D
wind speed

Solution

Humidity is the amount of water vapour present in the air. The air around us cannot hold more than a definite amount of water vapour at a given temperature. If the amount of water in the air is already high, the rate of evaporation decreases. Hence, it is indirectly proportional to humidity.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 26

Result

Matter in Our Surrounding Test - 26

Score

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Rank

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SHARING IS CARING

Question 1

surface area

wind speed

humidity

type of particles

Solution

Question 2

they have more water to sprinkle

water is cheapest thing available

it has high latent heat of vapourisation

None of the above

Solution

Question 3

weak, very weak, very high

weak, weak, very weak

very high, weak, very weak

very high, very weak, high

Solution

Question 4

very tightly, less loosely, very loosely

less loosely, very loosely, very tightly

very loosely, very tightly, less loosely

tightly, tightly, tightly

Solution

Question 5

matter is made up of small particles

the particles in matter are in motion

Both A and B

None of above

Solution

Question 6

increase of surface area

increase of temperature

increase in wind speed

all of above

Solution

Question 7

strong force of attraction, more spacing

weaker force of attraction, more spacing

weaker force of attraction, less spacing

strong force of attraction, less spacing

Solution

Question 8

matter has large particles which destroy water particles

tiny particles of sugar adjust among the space between tiny particles of water

tiny particles of sugar destroy large particles of water

None of the above

Solution

Question 9

electrically conductive

non-conductive

ductile

compressible

Solution

Question 10

temperature

surface area

humidity

wind speed

Solution

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