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	The product of the pressure and volume of an ideal gas is	A. A constant B. Approximately equal to the universal gas constant C. Directly proportional to its temperature D. Inversely proportional to its temperature
2	The motion of molecules in gases is:	A. Orderly B. Random C. Circular D. All of these
3	In an ideal gas, the molecules have:	A. Kinetic energy only B. Potential energy only C. Both KE and PE D. None of these
4	The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called	A. heat capacity B. specific heat capacity C. molar specific heat D. molar specific heat at constant volume
5	Amount of heat required to raise the temperature of a body through 1 K is called its	A. Specific heat B. Water equivalent C. Thermal capacity D. Entropy
6	Which of the following is a state variable	A. entropy B. pressure C. volume D. all of them
7	The disorder in the system increases due to the	A. removal of heat B. addition of heat C. removal or addition of heat D. none of them
8	The unit of thermodynamical scale is	A. centigrade B. fahrenheit C. kelvin D. none of them
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	In an adiabatic expansion, the temperature of the gas	A. increases B. becomes zero C. decreases D. decreases rapidly

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

Pressure exerted by a gas is

The state in which ice, water and vapour coexists in equilibrium is called

The ideal gas law is

The disorder in the system increases due to the

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

When the temperature of source and sink of a heat engine become equal entropy change will be

Good absorbers of heat are

The temperature scale approved in SI units is:

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

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

If the formula PV = nRT, n denotes:

Which of the following is not an assumption of kinetic energy

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

When heat is removed from the system

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

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

Brownian motion increases due to

In a heat engine, heat is supplied by the

The curve representing an adiabatic process is called

At what temperature the adiabatic change is equivalent to the isothermal change?

According to the second law, which is must to produce work

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

In all natural processes where heat flows from one system to another, there is always a net

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

Which quantity is important in stating the entropy of the system

In case of an ideal gas, the P.E associated with its molecule is

A diatomic gas molecule has

One kilogram of different substances contain

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

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ECAT Physics Chapter 11 Important MCQ's

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