ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

Try The MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

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ECAT Physics Chapter 11 Heat & Thermodynamics

00:00
Question # 1

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 2

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

Question # 3

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 4

If an amount of heat enters the system it could

Question # 5

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 6

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

Question # 7

The absolute temperature of the tripple point of water is

Question # 8

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

Question # 9

Amount of heat required to raise the temperature of a body through 1 K is called its

Question # 10

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

Question # 11

A process in which no heat enters or leaves the system is called

Question # 12

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

Question # 13

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

Question # 14

The number of translation degress of freedom for a diatomic gas is

Question # 15

Heat travels through vacuum by

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
A. 0°C
B. 10°C
C. 17°C
D. 20°C
2 The basis to define a temperature scale that is independent of material properties is provided by
A. carbon cycle
B. nitrogen cycle
C. Carnot cycle
D. irreversible cycle
3 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them
4 Heat travels through vacuum by
A. Conduction
B. Convection
C. Radiation
D. Both A and B
5 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
6 The percentage of available heat energy converted into work by a diesel engine is roughly
A. 35 %`
B. 40 %
C. 35 - 40 %
D. 25 %
7 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
8 In which process the condition for the application of Boyle's law on the gas is fulfilled
A. isochoric process
B. adiabatic process
C. isothermal process
D. none of them
9 The example of reversible process is
A. an explosion
B. changes occur suddenly
C. slow compression of a gas
D. all of them
10 A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be
A. 1/2
B. More than 1/2
C. Less than 1/2
D. Between 1 and 2

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  • Arsal

    Arsal

    31 Jan 2018

    Entry test is a good thing

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