Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 50

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Weekly Quiz Competition

Question 1
4 / -1

Melting point of ice

A
Increase with increasing pressure

B
Decreases with increasing pressure

C
Is independent of pressure

D
Os proportional to pressure
Question 2
4 / -1

19 g of water at 30^oC and 5 g of ice at –20^oC are mixed together in a calorimeter. What is the final temperature of the mixture? Given specific heat of ice = 0.5 cal g^–1 (^oC)^–1 and latent heat of fusion of ice = 80 cal g^–1

A
0^oC

B
–5^oC

C
5^oC

D
10^oC

Solution
Question 3
4 / -1

80 g of water at 30^oC are poured on a large block of ice at 0^oC. The mass of ice that melts is

A
30g

B
80g

C
1600g

D
150g

Solution
Question 4
4 / -1

The saturation vapour pressure of water at 100^oC is

A
739 mm of mercury

B
750 mm of mercury

C
760 mm of mercury

D
712 m of mercury
Question 5
4 / -1

Two spheres made of same substance have diameters in the ration 1:2. Their thermal capacities are in the ratio of

A
1 : 2

B
1 : 8

C
1 : 4

D
2 : 1

Solution
Question 6
4 / -1

If mass energy equivalence is taken into account, when water is cooled to form ice, the mass of water should

A
Increase

B
Remain unchanged

C
Decrease

D
First increase then decrease
Question 7
4 / -1

Compared to a burn due to water at 100^oC, a burn due to steam at 100^oC is

A
More dangerous

B
Less dangerous

C
Equally dangerous

D
None of these
Question 8
4 / -1

Two liquids A and B are at 32^oC and 24^oC. When mixed in equal masses, the temperature of the mixture is found to be 28^oC. Their specific heats are in the ratio of

A
3 : 2

B
2 : 3

C
1 : 1

D
4 : 3

Solution
Question 9
4 / -1

It is difficult to cook rice in an open vessel by boiling it a high altitude because of

A
Low boiling point and high pressure

B
High boiling point and low pressure

C
Low boiling point and low pressure

D
High boiling point and high pressure
Question 10
4 / -1

Amount of heat required to raise the temperature of a body through 1 K is called its

A
Water equivalnet

B
Thermal capacity

C
Entropy

D
Specific heat

Solution