Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 33

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is a correct statement?

A
The inter-particle force of attraction between the molecules in a liquid is less when compared to solids.

B
The inter-particle force of attraction between the molecules in a liquid is more when compared to solids.

C
The inter-particle force of attraction between the molecules in a liquid is either more or less when compared to solids.

D
There is no inter-particle force of attraction between the molecules in a liquid.

Solution

The inter-particle force of attraction between the molecules in a liquid is less when compared to solids. Due to this, liquids have no definite shape, unlike solids that have a definite shape.
Question 2
1 / -0

Which of the following applications illustrate that evaporation leads to cooling?

A
Only (i) and (ii)

B
Only (ii) and (iii)

C
Only (i) and (iii)

D
(i), (ii) and (iii)

Solution

Question 3

1 / -0

Match Column I with Column II and select the correct option from the codes given below

Column I	Column II
(a) Drying of clothes on a windy day	(i) Time taken for evaporation increases
(b) Liquefaction of gases	(ii) Decreasing pressure and increasing temperature
(c) Change in state of dry ice from solid to gas	(iii) Increasing pressure and decreasing temperature
(d) Less cooling effect of sweating in coastal areas	(iv) Rate of evaporation increases

a - (i), b - (ii), c - (iii), d - (iv)

a - (iv), b - (iii), c - (i), d - (ii)

a - (iii), b - (iv), c - (ii), d - (i)

a - (iv), b - (iii), c - (ii), d - (i)

Solution

Drying clothes on a windy day becomes easier because the rate of evaporation increases. And this is because of wind as wind flows it takes water molecules along with it and evaporation increases.

As we increase pressure and decrease the temperature, gases liquefy.

Change in state of dry ice from solid to gas is sublimation and this happens as we increase temperature and decrease pressure.

Option $$D$$ is correct.

Question 4
1 / -0

The percentage of para hydrogen in ordinary hydrogen increases when?

A
Temperature is lowered

B
Temperature is increased

C
Pressure is increased and temperature is decreased

D
None
Question 5
1 / -0

Statement I : Evaporation causes cooling.
Statement II: Particles of liquid absorb energy from the surrounding to regain the energy lost during evaporation.

A
Both statements I and II are true, statement II is correct explanation for statement I.

B
Both statements I and II are true, statement II is not the correct explanation for statement I.

C
Statement I is true and statement II is false.

D
Statement I is false and statement II is true.

Solution
Question 6
1 / -0

Intermolecular space is the least in?

A
water

B
steam

C
ice

D
all of them
Question 7
1 / -0

The beans are cooked earlier in pressure cooker, because:

A
B.P. increase with increasing pressure

B
B.P. decrease with increasing pressure

C
Extra pressure of pressure cooker, softens the beans

D
Internal energy is not lost while cooking is pressure cooker

Solution

The beans are cooked earlier in a pressure cooker because the boiling point increases with increasing pressure. As the pressure increases the particles come closer and due to their Kinetic energy and temperature inside the container increases and thus the boiling point increases which leads to faster cooking.
Question 8
1 / -0

Water vapor contains a huge amount of stored energy known as

A
Latent heat

B
Solar energy

C
Stored heat

D
Mechanical energy
Question 9
1 / -0

select the order of evaporation for water, alcohol, petrol, and kerosene oil.

A
water > alcohol > kerosene oil > petrol

B
alcohol > petrol > water > kerosene oil

C
petrol > alcohol > water > kerosene oil

D
petrol > alcohol > kerosene oil > water

Solution

A substance that has a lower boiling point will evaporate first. Boiling points of given species are:-
1) Boiling point of water = $$100^{o}C$$
2) Boiling point of alcohol = $$79^{o} C$$ (here ethanol is considered as alcohol)
3) Boiling point of petrol = $$95^{o}C$$
4) boiling point of kerosene = $$150^{O}C - 300^{o}C$$
Hence, the correct answer is $$B$$.
Question 10
1 / -0

Which of the following is the BEST indicator of the actual amount of water vapour in the air?

A
Air temperature

B
Saturation vapour pressure

C
Relative humidity

D
Dew point temperature

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 33

Result

Matter in Our Surrounding Test - 33

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SHARING IS CARING

Question 1

The inter-particle force of attraction between the molecules in a liquid is less when compared to solids.

The inter-particle force of attraction between the molecules in a liquid is more when compared to solids.

The inter-particle force of attraction between the molecules in a liquid is either more or less when compared to solids.

There is no inter-particle force of attraction between the molecules in a liquid.

Solution

Question 2

Only (i) and (ii)

Only (ii) and (iii)

Only (i) and (iii)

(i), (ii) and (iii)

Solution

Question 3

a - (i), b - (ii), c - (iii), d - (iv)

a - (iv), b - (iii), c - (i), d - (ii)

a - (iii), b - (iv), c - (ii), d - (i)

a - (iv), b - (iii), c - (ii), d - (i)

Solution

Question 4

Temperature is lowered

Temperature is increased

Pressure is increased and temperature is decreased

None

Question 5

Both statements I and II are true, statement II is correct explanation for statement I.

Both statements I and II are true, statement II is not the correct explanation for statement I.

Statement I is true and statement II is false.

Statement I is false and statement II is true.

Solution

Question 6

water

steam

ice

all of them

Question 7

B.P. increase with increasing pressure

B.P. decrease with increasing pressure

Extra pressure of pressure cooker, softens the beans

Internal energy is not lost while cooking is pressure cooker

Solution

Question 8

Latent heat

Solar energy

Stored heat

Mechanical energy

Question 9

water > alcohol > kerosene oil > petrol

alcohol > petrol > water > kerosene oil

petrol > alcohol > water > kerosene oil

petrol > alcohol > kerosene oil > water

Solution

Question 10

Air temperature

Saturation vapour pressure

Relative humidity

Dew point temperature

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