PPSC Physics Topic 3 MCQ Test With Answer

PPSC Physics lecturer test contains questions about Thermal Properties Of Matter. This topic deals with the reaction of different states of matter when studied under different levels of thermal conditions. Learning about how different types of matter behave when exposed to different temperatures has enabled physicists and scientists to invent thousands of useful items. In the PPSC Physics online test, you can attempt the type of questions that are usually asked about Thermal Properties Of Matter in the PPSC physics test. The importance of the matter and its interaction with different conditions of temperature makes it an important concept in the understanding of the subject matter of physics.

All candidates can prepare for PPSC Physics test on our free IlmKiDunya.com online test preparation portal. By taking this test, you can expand the understanding you already have of this topic. Attempt the PPSC Physics test MCQs regarding this topic right now and test your abilities!

MCQ's Test For PPSC Physics Topic 3 Thermal Properties of Matter

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PPSC Physics Topic 3 Thermal Properties of Matter

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Question # 1

What is the mean free path in a gas.

Question # 2

A diatomic gas contains only

Question # 3

Thermal conduction in metals differs from thermal conduction in insulators,. The reasons for this is that , in metals heat can be transported by.

Question # 4

What is the total entropy change during an reversible cycle.

Question # 5

Efficiency of a Carnot engine depends on

Question # 6

A Carnot engine has the same efficiency between (i) 100 K and 500 K and ii) T and 900 K What will be T.

Question # 7

The ideal thermal efficiency of a cyclic heat engine is limited by

Question # 8

The thermal inertia of a thermodynamic system is known as its.

Question # 9

The internal energy of an isolated system

Question # 10

Real gases obey gas laws only at

Question # 11

By definition a gas is said to be have undergone adiabatic compressing when

Question # 12

Which quantity must be the same for two bodies if they are to be in thermal equilibrium.

Question # 13

Which is the heat transfer mode between an object and its environment due to circular fluid motion.

Question # 14

Significant motion for the molecules of a monoatomic gas is.

Question # 15

Let at constant temperature the pressure of an ideal gas be doubled so that the new volume is.

Question # 16

The efficiency of Carnot engine is

Question # 17

Which of the following is an example of an irreversible process.

Question # 18

Absolute zero may be regarded as the temperature of which

Question # 19

The term used for heat capacity per unit mass is.

Question # 20

The kinetic molecular model of matter describe matter an being made up of molecules in continuous.

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PPSC Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Contrivances for converting heat into work are called.
A. Heat pumps
B. Heat engines
C. IC engines
D. Jet engine
2 The heat accepted and rejected by a Carnot engine operating between two heat reservoirs defines.
A. The efficiency of the working substance of the engine
B. the ideal gas scale of temperature
C. The ratio of the absolute temperature of the reservoirs
D. The thermal capacity of the working substance
3 The thermal inertia of a thermodynamic system is known as its.
A. Entropy
B. Enthalpy
C. Isothermal conduction
D. Adiabatic conduction
4 A diatomic gas contains only
A. Translational K.E.
B. Rotational K.E.
C. Vibrational K.E.
D. All of these
5 Convention is the transfer of thermal energy by means of currents in
A. Pressure
B. Temperature
C. Liquids
D. Fluids
6 A Carnot engine has the same efficiency between (i) 100 K and 500 K and ii) T and 900 K What will be T.
A. 90 K
B. 100 K
C. 180 K
D. 200 K
7 What is the SI unit for thermal conductivity.
A. W m-1 K-1
B. W m-2 k-2
C. W m-3 k-1
D. J kg -1 k-1
8 The efficiency of a diesel engine is about
A. 15% to 35 5
B. 355 to 40%
C. 45% to 655
D. 505 to 65 %
9 The process in which a system undergoes a change of state at constant volume.
A. Isobaric process
B. Isochoric process
C. Isothermal process
D. Adiabatic process
10 If temperature of the sink is decreased the efficiency of a Carnot engine
A. Increases
B. Decreases
C. Remains constant
D. First increases and thend ecreases

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