Internal Energy and Heat Transfer Test

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Internal Energy and Heat Transfer Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

The direction of the flow of heat depends upon

A
quantity of heat in a body

B
temperature difference

C
both (1) and (2)

D
none of these
Question 2
1 / -0

What is the value of zero kelvin on celsius scale?

A
- 273^oC

B
- 32^oC

C
- 0^oC

D
100^oC
Question 3
1 / -0

The normal temperature of a human body on ^oF scale is

A
36.8^o

B
63.8^o

C
98.4^o

D
95.3^o
Question 4
1 / -0

Two bodies A and B are at the same temperature (50^oC). They are placed in contact. The final result will be

A
temperature of A becomes 100^oC

B
temperature of B becomes 100^oC

C
temperature of both A and B becomes 100^oC

D
no change in temperature
Question 5
1 / -0

Why is alcohol more volatile as compared to water?

A
The boiling point of alcohol is more than that of water.

B
The boiling point of alcohol is less than that of water.

C
The melting point of alcohol is less than that of water.

D
The melting point of alcohol is more than that of water.
Question 6
1 / -0

Which of the following statements is NOT true?

A
A calorimeter is used to measure heat energy.

B
Heat energy lost by a hot body is equal to the heat energy gained by a cold body.

C
The SI unit of heat is calories.

D
Heat energy is the sum of potential and kinetic energies of the molecules of the substance.

Solution

Although 'calorie' is the more commonly used unit to measure heat energy, the SI unit for all forms of energy is 'Joule'.
Question 7
1 / -0

Which of the following thermometers can be used to measure temperature of boiling water?

A
Clinical thermometer

B
Laboratory thermometer

C
Maximum-minimum thermometer

D
Both (1) and (2)
Question 8
1 / -0

What is the upper range of temperature of a laboratory thermometer?

A
100°C

B
108°C

C
110°C

D
140°C
Question 9
1 / -0

How are the units` calorie and joule related to each other?

A
1 J = 4.2 cal

B
1 cal = 4.2 J

C
1 cal = 4.2 × 10³ J

D
1 J = 4.2 × 10³ cal
Question 10
1 / -0

How many joules of energy are equal to 5 calories?

A
20.9 joules

B
1.20 joules

C
0.84 joules

D
5.00 joules

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Internal Energy and Heat Transfer Test - 1

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Internal Energy and Heat Transfer Test - 1

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Question 1

quantity of heat in a body

temperature difference

both (1) and (2)

none of these

Question 2

- 273oC

- 32oC

- 0oC

100oC

Question 3

36.8o

63.8o

98.4o

95.3o

Question 4

temperature of A becomes 100oC

temperature of B becomes 100oC

temperature of both A and B becomes 100oC

no change in temperature

Question 5

The boiling point of alcohol is more than that of water.

The boiling point of alcohol is less than that of water.

The melting point of alcohol is less than that of water.

The melting point of alcohol is more than that of water.

Question 6

A calorimeter is used to measure heat energy.

Heat energy lost by a hot body is equal to the heat energy gained by a cold body.

The SI unit of heat is calories.

Heat energy is the sum of potential and kinetic energies of the molecules of the substance.

Solution

Question 7

Clinical thermometer

Laboratory thermometer

Maximum-minimum thermometer

Both (1) and (2)

Question 8

100°C

108°C

110°C

140°C

Question 9

1 J = 4.2 cal

1 cal = 4.2 J

1 cal = 4.2 × 103 J

1 J = 4.2 × 103 cal

Question 10

20.9 joules

1.20 joules

0.84 joules

5.00 joules

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- 273^oC

- 32^oC

- 0^oC

100^oC

36.8^o

63.8^o

98.4^o

95.3^o

temperature of A becomes 100^oC

temperature of B becomes 100^oC

temperature of both A and B becomes 100^oC

1 cal = 4.2 × 10³ J

1 J = 4.2 × 10³ cal