Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 52

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Weekly Quiz Competition

Question 1
4 / -1

The weight of a person if 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 2
4 / -1

The thermal capacity of a body is 80 cal, then its water equivalent is

A
80 cal/g

B
8 g

C
80 g

D
80 kg
Question 3
4 / -1

A vessel contains 110 g of water. The heat capacity of the vessel is equal to 1 g water. The initial temperature of water in vessel is 10^oC. If 220 g of hot water at 70^oC is poured in the vessel, the final temperature neglecting loss, will be

A
70^oC

B
80^oC

C
60^oC

D
50^oC

Solution
Question 4
4 / -1

A hailstone at 0^oC falls from a height of 1 km on an insulting surface converting whole of its kinetic energy into heat. What part of it will melt? (g = 10 m/s²)

A

B

C

D
All part

Solution
Question 5
4 / -1

The SI unit of mechanical equivalent of heat is

A
Joule × Calorie

B
Joule/Calorie

C
Calorie × Erg

D
Erg/Calorie

Solution
Question 6
4 / -1

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

A
2.6^oC

B
1.2^oC

C
0.32^oC

D
0.12^oC

Solution
Question 7
4 / -1

A lead ball moving with a velocity v strikes a wall and stops. If 5% 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
Question 8
4 / -1

A mechanical equivalent of heat J is

A
A constant

B
A physical quantity

C
A conversion factor

D
None of these
Question 9
4 / -1

Boiling water is changing into steam. At this stage the specific heat of water is

A
< 1

B
∞

C
1

D
0
Question 10
4 / -1

A block of mass 100 g slides on a rough horizontal surface. If the speed of the block decreases from 10 m/s to 5 m/s, the thermal energy developed in the process is

A
3.75 J

B
37.5 J

C
0.375 J

D
0.75 J

Solution