ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQ`s Test

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Dr Shahida 01 - Nov - 2024 11 Min 12 Sec 100/120
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Rashida Latif 13 - Jan - 2025 07 Min 37 Sec 65/120

ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	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
2	Heat travels through vacuum by	A. Conduction B. Convection C. Radiation D. Both A and B
3	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
4	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
5	In an adiabatic expansion, the temperature of the gas	A. increases B. becomes zero C. decreases D. decreases rapidly
6	In which process the condition for the application of Boyle's law on the gas is fulfilled	A. isochoric process B. adiabatic process C. isothermal process D. none of them
7	Pressure exerted by a gas is	A. Independent of density of the gas B. Inversely proportional to the density of the gas C. Directly proportional to the square of the density of the gas D. Directly proportional to the density of the gas
8	Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:	A. Newton's second law B. Pascal's law C. Carnot theorem D. Second law of thermodynamics
9	It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of	A. Clausius statement of second law B. Kelvin'sstatement of second law C. Clausius statement of first law D. Kelvin's statement of first law
10	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

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ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

Amount of heat required to raise the temperature of a body through 1 K is called its

If the formula PV = nRT, n denotes:

No spark plug is needed in

In an adiabatic expansion, the temperature of the gas

At constant volume temperature is increased. Then

The behaviour of gases is well accounted by the kinetic theory based on

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Generally a temperature scale is established by

The basis to define a temperature scale that is independent of material properties is provided by

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

We can express the work in term of

Pressure of a gas at constant volume is proportion to

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

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

In the study of thermodynamics, which gas is considered as the working substance

The internal energy of an ideal gas system is generally the

Efficiency of carnot engine is independent of the

In a heat engine, heat is supplied by the

The motion of molecules in gases is:

The volume of universal gas constant R is:

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

The example of irreversible process is

The internal energy of a system does not depend upon the

A process in which no heat enters or leaves the system is called

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

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

The efficiency of diesel engine is

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

The heat required to raise the temperature of one mole of the substance through 1 K is called

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

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ECAT Physics Chapter 11 Important MCQ's

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