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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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	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
2	Absolute temperature can be calculated by	A. Means squares velocity B. Motion of the molecule C. Both A and B D. None of these
3	The curve representing an isothermal process is called	A. adiabat B. isotherm C. fixed temperature D. none of them
4	Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called	A. heat capacity B. specific heat capacity C. specific heat at constant volume D. specific heat at constant pressure
5	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
6	The pressure exerted by the gas is	A. directly proportional to the P.E B. inversely proportional to the P.E C. inversely proportional to the K.E D. directly proportional to the K.E
7	The motion of molecules in gases is:	A. Orderly B. Random C. Circular D. All of these
8	Sadi carnot described an ideal heat engine in	A. 1820 B. 1840 C. 1860 D. 1880
9	At constant temperature, if the density of the gas is increased, its pressure will:	A. One kg of a substance B. Unit volume of a substance C. One mole of a substance D. None of these
10	Which of the following is not thermo dynamical function?	A. Enthalpy B. Work done C. Gibb's energy D. Internal energy

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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

While deriving equation of pressure by kinetic theory of gases, we take into account:

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

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

We can express the work in term of

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Hotness and coldness of an object is represented in terms:

The concept of entropy was introduced into the study of thermodynamics in

First law of thermodynamic is special case of

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

If the formula PV = nRT, n denotes:

The example of reversible process is

At absolute temperature, the kinetic energy of the molecules

A reversible cycle is the one in which

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

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

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

Specific heat at constant pressure is greater than the specific heat at constant volume because

Carnot heat engine only used

Rice takes longest to cook

The absolute temperature for an ideal gas is

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

If the distance between two charges is doubled, the force between them will become:

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

If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

If an amount of heat enters the system it could

Sadi carnot described an ideal heat engine in

Efficiency of carnot engine is independent of the

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

The example of irreversible process is

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ECAT Physics Chapter 11 Important MCQ's

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If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I³gives the: