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

At constant temperature, if the density of the gas is increased, its pressure will:

Question # 2

Rice takes longest to cook

Question # 3

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

Question # 4

The example of reversible process is

Question # 5

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

Question # 6

The pressure exerted by the gas is

Question # 7

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

Question # 8

One kilogram of different substances contain

Question # 9

Boyle's law is applicable in

Question # 10

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

Question # 11

The nature of thermal radiation is similar to:

Question # 12

Truth of kinetic energy is confirmed by:

Question # 13

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 14

When heat is added into the system then change in entropy is

Question # 15

An isochoric process is one which take place at

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:
A. N = nNAm = MNA
B. n = N NA, M = mNA
C. M = NA/N , NA= m/n
D. N = nNA, M = mNA
2 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
3 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
4 The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to
A. 300°C
B. 573°C
C. 600°C
D. 743°C
5 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
6 According to the second law, which is must to produce work
A. a source contains a large amount of heat energy
B. two sources at the same temperature
C. two sources at the different temperatures
D. a source contains a small amount of energy
7 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
A. -20°C
B. 6.67°C
C. 5°C
D. 0°C
8 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them
9 The value of E0in coulomb's law is:
A. 9 x 109Nm2C-2
B. 8.85 x 10-12C2N-1m-2
C. 8.85 x 10-12Nm2C-2
D. 9 x 109C2N-1m-2
10 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16

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  • Arsal

    Arsal

    31 Jan 2018

    Entry test is a good thing

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