ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

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

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Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

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Question # 1

The absolute temperature for an ideal gas is

Question # 2

Which of the following is not thermo dynamical function?

Question # 3

The work done on the system by the environment is considered as

Question # 4

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

Question # 5

Rice takes longest to cook

Question # 6

Heat travels through vacuum by

Question # 7

The unit of thermodynamical scale is

Question # 8

The curve representing an adiabatic process is called

Question # 9

The internal energy of an ideal gas system is generally the

Question # 10

The product of the pressure and volume of an ideal gas is

Question # 11

When two objects come to common temperature, the body is said to be in:

Question # 12

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Question # 13

Sadi carnot described an ideal heat engine in

Question # 14

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Question # 15

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

Question # 16

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 17

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Question # 18

The disorder in the system increases due to the

Question # 19

The percentage of available heat energy converted into work by a diesel engine is roughly

Question # 20

Absolute zero is considered as that temperature at which:

Question # 21

If the formula PV = nRT, n denotes:

Question # 22

Efficiency of carnot engine is independent of the

Question # 23

If a liquid is heated in weightlessness, the heat is transmitted through

Question # 24

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Question # 25

Energy gas behaves like an ideal gast at

Question # 26

In an adiabatic process the work is done at the expense of the

Question # 27

Truth of kinetic energy is confirmed by:

Question # 28

Average KE of a gas molecule has:

Question # 29

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 30

Pressure exerted by a gas is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 For making cooking utensils, which of the following pairs of properties is most suited?
A. Low specific heat and high conductivity
B. Low specific heat and low conductivity
C. High specific heat and high conductivity
D. High specific heat and low conductivity
2 For the working of a heat engine, there must be
A. a source of heat at high temperature
B. a sink at low temperature
C. both of them
D. none of them
3 One mole of any substance contain
A. same number of molecules
B. different number of molecules
C. may be same or different
D. none of them
4 We can express the work in term of
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
5 A real gas can be approximated to an ideal gas at
A. Low density
B. High pressure
C. High density
D. Low temperature
6 According to kinetic theory of gases, molecules of a gas behave like
A. Inelastic spheres
B. Perfectly elastic rigid sphere
C. Perfectly elastic non-rigid spheres
D. Inelastic non-rigid spheres
7 In an adiabatic process the work is done at the expense of the
A. energy supplied to the system
B. energy gained from the surroundings
C. internal energy
D. none of them
8 The curve representing an adiabatic process is called
A. isotherm
B. adiabat
C. adiable
D. none of them
9 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
10 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6

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