Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 35

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Weekly Quiz Competition

Question 1
4 / -1

A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt, the latent heat required

A
Are the same for both

B
Is greater for the ball

C
Is greater for the spring

D
For the two may or may not be the same depending upon the metal
Question 2
4 / -1

A closed bottle containing water at 30°C is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened

A
Water will boil

B
Water will freeze

C
Nothing will happen on it

D
It will decompose into H₂ and O₂
Question 3
4 / -1

The thermal capacity of 40 g of aluminium (specific heat = 0.2 cal/g°/C) is

A
40 cal/°C

B
60 cal/°C

C
200 cal/°C

D
8 cal/°C

Solution
Question 4
4 / -1

Two rigid boxes containing different ideal gases are placed on a table. Box A contains one mole of nitrogen at temperature T₀, while Box B contains one mole of helium at temperature (7/3) T₀. The boxes are then put into thermal contact with each other and heat flows between them until the gases reach a common final temperature (Ignore the heat capacity of boxes). Then, the final temperature of the gases, T_f, in terms of T₀ is

A

B

C

D

Solution
Question 5
4 / -1

A liquid of mass M and specific heat S is at a temperature 2 t. If another liquid of thermal capacity 1.5 times, at a temperature of t/3 is added to it, the

A
4/3 t

B
t

C
t/2

D
2/3 t

Solution
Question 6
4 / -1

0.93 watt-hour of energy is supplied to a block of ice weighing 10 g. It is found that

A
Half of the block melts

B
The entire block melts and the water attains a temperature of 4°C

C
The entire block just melts

D
The block remains unchanged

Solution
Question 7
4 / -1

The weight of a person is 60 kg. If he gets 10⁵ calories heat through food and the efficiency of his body is 28%, then upto how much height he can climb (approximately)

A
100 m

B
200 m

C
400 m

D
1000 m

Solution
Question 8
4 / -1

Hailstone at 0°C falls from a height of 1 km on an insulating surface converting whole of its kinetic energy into heat. What part of it will melt (g = 10 m/s²)

A
1/33

B
1/8

C

D
All of it will melt

Solution
Question 9
4 / -1

Of two masses of 5 kg each falling from height of 10 m, by which 2kg water is stirred. The rise in temperature of water will be

A
2.6°C

B
1.2°C

C
0.32°C

D
0.12°C

Solution
Question 10
4 / -1

A lead ball moving with a velocity V strikes a wall and stops. If 50% of its energy is converted into heat, then what will be the increase in temperature (Specific heat of lead is S)

A

B

C

D

Solution