Question # 1

The collision between the gas molecules is

Choose an answer

Elastic

Inelastic

Both a and b

None of these

At which of the following temperature a body has maximum internal energy.

Choose an answer

-273 ^oC

0 K

273 K

-273 K

The motion of gas molecules is

Choose an answer

In the same direction

Random

Walls of container

Opposite to each other

Value of triple point of water is given as.

Choose an answer

Zero K

100 K

273.16 K

373.16 K

First law of thermodynamics can be defined by the equation

Choose an answer

Not change in entropy of a system after one complete Carnot cycle is.

Choose an answer

Positive

Negative

Zero

None of these

The increase in thermal pollution of environment means.

Choose an answer

Increase in the entropy

Decrease in the entropy

Entropy remains constant

Entropy becomes zero

The mean kinetic energy of gas is at.

Choose an answer

0 ^oC

-273 ^oC

100 K

100 ^oC

The measure of hotness or coldness of a substance is.

Choose an answer

Temperature

Heat

Internal energy

Energy

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

Choose an answer

Zero

100 J

200 J

-200 J

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

Choose an answer

Doubled

1/4 original

1/2 of original

Unchanged

Heat is form of.

Choose an answer

Power

Momentum

Energy

Torque

The efficiency of diesel engine is about

Choose an answer

25 % to 30%

35% to 40%

40% to 50%

50% to 60%

A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes.

Choose an answer

Halve

Doubled

Four time

Constant

Almost all the raw energy is librated from

Choose an answer

Heat

Earth

Light

All of these

Temperature of a gas is increased from 27 oC to 127 oC. The ratio of its mean K.E. will be

Choose an answer

3/4

9/16

4/3

10/9

Which remains constant in an adiabatic process.

Choose an answer

Volume

Pressure

entropy

temperature

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

Choose an answer

25%

50%

70%

100%

More Classes

Other Links

11th Class Part 1 Physics Chapter 11 Test Online MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer