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	When two objects come to common temperature, the body is said to be in:	A. Static equilibrium B. Dynamic equilibrium C. Thermal equilibrium D. None of these
2	10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?	A. Each have same number of molecules B. Don't have same number of molecules C. Can't be predicted D. None
3	The concept of entropy was introduced into the study of thermodynamics in	A. 1856 B. 1865 C. 1656 D. 1685
4	The absolute temperature for an ideal gas is	A. directly proportional to the rotational K.E of gas molecules B. directly proportional to the vibrational K.E of gas molecules C. directly proportional to the average translational K.E.of gas molecules D. directly proportional to the P.E. of gas molecules
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	The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is	A. 70% B. 100% C. 35% D. 38%
7	The earliest heat engine was	A. petrol engine B. diesel engine C. electric engine D. steam engine
8	At O° K which of the following properties of a gas will be zero?	A. Kinetic energy B. Potential energy C. Vibrational energy D. Density
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	First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about	A. how heat is absorbed B. how heat extracted C. how this conversion takes place D. none of them

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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

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

Electromagnetic waves emitted by hot bodies are called:

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

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

The pressure exerted by the gas is

If an amount of heat enters the system it could

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

If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of

A succession of events which bring the system back to its initial condition is called

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

Real gases strictly obey gas law at:

Pressure may be define as _______ per second per unit area:

First law of thermodynamics is consequence of conservation of

The volume of universal gas constant R is:

According to kinetic theory of gases, molecules of a gas behave like

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

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

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

At O° K which of the following properties of a gas will be zero?

During the whole carnot cycle

Internal energy is the sum of all the forms of

Pressure of a gas at constant volume is proportion to

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:

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

One mole of any substance contain

Absolute zero is considered as that temperature at which:

The curve representing an isothermal process is called

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

The Boltzman constant has the value

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

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ECAT Physics Chapter 11 Important MCQ's

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

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: