Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 17

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Weekly Quiz Competition

Question 1
1 / -0

The process by which wet clothes dry up is called _____________.

A
evaporation

B
boiling

C
condensation

D
solidification

Solution

Evaporation is a type of vaporization of a liquid that occurs from the surface of liquid into gaseous phase that is not saturated with the evaporating substance. Clothes dry up as the water evaporates from the surface of cloth.
Question 2
1 / -0

The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called :

A
sublimation

B
evaporation

C
cooling

D
boiling

Solution

Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase below its boiling point.

Hence, option B is correct.
Question 3
1 / -0

What happens to the particle of matter when pressure is applied?

A
They move faster

B
They come closer

C
They move freely

D
None of the above

Solution

When pressure is applied, the particles move closer to each other and their state also changes.
Question 4
1 / -0

The rate of evaporation depends on __________.

A
surface area

B
temperature

C
humidity

D
all of the above

Solution

The rate of evaporation depends on the surface area, temperature, humidity, and speed of the wind. It increases with an increase in surface area, temperature, and wind speed. But it decreases with an increase in humidity.
Option $$D$$ is correct.
Question 5
1 / -0

The rate of evaporation is ____________.

A
directly proportional to the temperature of the liquid

B
inversely proportional to the temperature of the liquid

C
independent of the temperature of the liquid

D
directly proportional to the humidity of the surrounding air

Solution

Evaporation is a type of vaporization of a liquid that occurs from the surface of liquid into gaseous phase that is not saturated with the evaporating substance. The higher the temperature of substance or liquid the greater the kinetic energy of the molecules at its surface and therefore the faster the rate of evaporation.
Question 6
1 / -0

Which one of the processes is slow?

A
Evaporation

B
Boiling

C
Both have same rate

D
None of the above

Solution

Evaporation is a slow process - it can take days, hours or weeks depending on the temperature of the surrounding. On the other hand, boiling occurs only when the liquid achieves the boiling point. Once that temperature is reached, the liquid can boil in matter of minutes.
Question 7
1 / -0

The particles of matter are ______________.

A
large

B
small

C
medium sized

D
None of these

Solution

The particles of matter are small in size. All matters are made up of extremely small atoms.
Hence, the correct option is B.
Question 8
1 / -0

Water, when left uncovered, gets converted into vapour without any external heat due to:

A
evaporation

B
boiling

C
Both A and B

D
None of these

Solution

The water, when left uncovered, gets converted into vapour due to evaporation. The surface molecules of uncovered water absorbs energy from the atmosphere easily, increasing their kinetic energy. These molecules escape the surface of water as vapour, thus, reducing the level of water
Hence, the correct option is $$\text{A}$$.
Question 9
1 / -0

The term used for five basic elements was ___________.

A
tritatva

B
panchtatva

C
chaturthtatva

D
dashatatva

Solution

The term used for five basic elements was panchtatva. Panch means five and tatva mean element.
Hence, the correct option is B.
Question 10
1 / -0

The rate of evaporation increases as ____________.

A
the exposed surface area of the liquid increases

B
the exposed surface area of the liquid decreases

C
the movement of air above the surface of the liquid decreases

D
atmospheric pressure increases

Solution

Evaporation is a type of vaporization of a liquid that occurs from the surface of liquid into gaseous phase that is not saturated with the evaporating substance. Substance or liquid that has a larger surface area will evaporate faster as there are more surface molecules per unit of volume that are potentially able to escape.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 17

Result

Matter in Our Surrounding Test - 17

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SHARING IS CARING

Question 1

evaporation

boiling

condensation

solidification

Solution

Question 2

sublimation

evaporation

cooling

boiling

Solution

Question 3

They move faster

They come closer

They move freely

None of the above

Solution

Question 4

surface area

temperature

humidity

all of the above

Solution

Question 5

directly proportional to the temperature of the liquid

inversely proportional to the temperature of the liquid

independent of the temperature of the liquid

directly proportional to the humidity of the surrounding air

Solution

Question 6

Evaporation

Boiling

Both have same rate

None of the above

Solution

Question 7

large

small

medium sized

None of these

Solution

Question 8

evaporation

boiling

Both A and B

None of these

Solution

Question 9

tritatva

panchtatva

chaturthtatva

dashatatva

Solution

Question 10

the exposed surface area of the liquid increases

the exposed surface area of the liquid decreases

the movement of air above the surface of the liquid decreases

atmospheric pressure increases

Solution

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