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ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics
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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics
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Question # 1
The nature of thermal radiation is similar to:
Question # 2
In the formula P = N0KT, N0denotes:
Question # 3
Which of the following is not thermo dynamical function?
Question # 4
At constant temperature, if the density of the gas is increased, its pressure will:
Question # 5
In an ideal gas, the molecules have:
Question # 6
An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is
Question # 7
Adiabatic change occurs when the gas
Question # 8
The percentage of available heat energy converted into work by a petrol engine is roughly
Question # 9
The example of reversible process is
Question # 10
In case of an ideal gas, the P.E associated with its molecule is
Question # 11
Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure
Question # 12
A diatomic gas molecule has
Question # 13
According to the second law, which is must to produce work
Question # 14
The absolute temperature for an ideal gas is
Question # 15
The behaviour of gases is well accounted by the kinetic theory based on
Question # 16
A succession of events which bring the system back to its initial condition is called
Question # 17
The Boltzman constant has the value
Question # 18
Truth of kinetic energy is confirmed by:
Question # 19
The heat required to raise the temperature of one mole of the substance through 1 K is called
Question # 20
A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be
Question # 21
Maximum density of H2O is at the temperature
Question # 22
The second law of thermodynamics is concerned with the circumstances in which
Question # 23
The work done on the system by the environment is considered as
Question # 24
Energy gas behaves like an ideal gast at
Question # 25
On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves
Question # 26
A reversible cycle is the one in which
Question # 27
The ideal gas law is
Question # 28
Heat travels through vacuum by
Question # 29
When two objects come to common temperature, the body is said to be in:
Question # 30
A typical four stroke petrol engine undergoes how many successive processes in each cycle
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