Question # 1

Maximum density of H₂O is at the temperature

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32°F

39.2°F

42°F

4°F

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

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32°C

-32°C

-40°C

-212°C

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

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rotational motion of molecules

vibrational motion of molecules

linear motion of molecules

all of them

A reversible cycle is the one in which

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some of the changes are reversible

all of the changes are reversible

all of the changes are irreversible

none of them

Which of the following is not an example of adiabatic process

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the rapid escape of air from a burst type

the rapid expansion and compression of air through which a sound wave is passing

cloud formation in the atmosphere

none of them

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

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Metal has high specific heat

Metal has high thermal conductivity

Metal has low specific heat

Metal has low thermal conductivity

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

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546 K

273 K

546°C

273°C

At absolute temperature, the kinetic energy of the molecules

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Becomes zero

Becomes maximum

Becomes minimum

Remain constant

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

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2

3

5

6

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

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zero degree celsius

zero degree fahrenheit

absolute zero

373 K

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

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Specific heat

Water equivalent

Thermal capacity

Entropy

The temperature scale approved in SI units is:

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Celsius scale

Kelvin scale

Fehrenheit scale

None of these

When heat is removed from the system

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negative

positive

zero

any one of them

The nature of thermal radiation is similar to:

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Ultraviolet rays

Light rays

Both of them

None of these

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

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1/2

More than 1/2

Less than 1/2

Between 1 and 2

One mole of any substance contain

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same number of molecules

different number of molecules

may be same or different

none of them

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ECAT Physics Chapter 11 Heat & Thermodynamics Online Test MCQs With Answers

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