ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

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ECAT Physics Chapter 11 Heat & Thermodynamics

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Question # 1

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

Question # 2

When the temperature of source and sink of a heat engine become equal entropy change will be

Question # 3

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 4

In the theory of dimensional analysis, heat may be properly represented by:

Question # 5

The relationship between Boltzmann constant k with R and NAis given as:

Question # 6

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

Question # 7

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 8

At O° K which of the following properties of a gas will be zero?

Question # 9

The earliest heat engine was

Question # 10

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 11

The motion of molecules in gases is:

Question # 12

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Question # 13

Which of the following is not an assumption of kinetic energy

Question # 14

The example of irreversible process is

Question # 15

At absolute temperature, the kinetic energy of the molecules

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 First law of thermodynamics is consequence of conservation of
A. Work
B. Energy
C. Heat
D. All of these
2 If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy
A. 0 J
B. 2 J
C. 5 J
D. 10 J
3 Brownian motion increases due to
A. Increase in size of Brownian particle
B. Increase in temperature of medium
C. Increase in density of medium
D. Increase in viscosity of medium
4 The unit of thermodynamical scale is
A. centigrade
B. fahrenheit
C. kelvin
D. none of them
5 The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called
A. heat capacity
B. specific heat capacity
C. molar specific heat
D. molar specific heat at constant volume
6 An irreversible heat flow from a hot to cold substances of a system, causes the disorder to
A. decrease
B. remains the same
C. increase
D. any one of them
7 Heat travels through vacuum by
A. Conduction
B. Convection
C. Radiation
D. Both A and B
8 Absolute zero is considered as that temperature at which:
A. All liquid become gases
B. All gases become liquid
C. Water freezes
D. None of these
9 At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:
A. Double
B. Remains constant
C. Half
D. None of these
10 At absolute temperature, the kinetic energy of the molecules
A. Becomes zero
B. Becomes maximum
C. Becomes minimum
D. Remain constant

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  • Arsal

    Arsal

    31 Jan 2018

    Entry test is a good thing

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