ECAT Pre General Science Chapter 11 online mcq test with answers for Physics chapter 11 (Heart & Thermodynamics)

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ECAT Physics Chapter 11 Important MCQ's

Sr.#	Question	Answer
1	A typical four stroke petrol engine undergoes how many successive processes in each cycle	A. one B. two C. three D. four
2	At absolute temperature, the kinetic energy of the molecules	A. Becomes zero B. Becomes maximum C. Becomes minimum D. Remain constant
3	The pressure of gas everywhere inside the vessel will be the same provided the gas is of	A. Non-uniform density B. uniform density C. high density D. low density
4	On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves	A. outwards B. inwards C. in either way D. none of these
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 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	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
8	At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be	A. 81 K B. 355 K C. 627 K D. 627°C
9	The heat required to raise the temperature of one mole of the substance through 1 K is called	A. heat capacity B. specific heat capacity C. molar specific heat D. all of them
10	The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :	A. 1.7 x 10³J B. 10.2 x 10³J C. 3..4 x 10³J D. 6.8 x 10³J

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ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

The absolute temperature for an ideal gas is

Hotness and coldness of an object is represented in terms:

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

The example of irreversible process is

Real gases strictly obey gas law at:

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

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

During the whole carnot cycle

The disorder in the system increases due to the

Carnot heat engine only used

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Triple point of water is

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

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:

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

The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to

The internal energy of a system does not depend upon the

One kilogram of different substances contain

Which of the following is not thermo dynamical function?

First law of thermodynamics is consequence of conservation of

The only significant motion possessed by the mono-atomic gas represented is:

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

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

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

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

While deriving the equation for pressure of a gas we consider the

Efficiency of carnot engine is independent of the

We cannot utilize the heat contents of oceans and atmosphere because

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

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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:

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

If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then