ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 3 Gases

Try The MCQ's Test For ECAT Chemistry Chapter 3 Gases

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ECAT Chemistry Chapter 3 Gases

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Question # 1

In Solids, the temperature is the measure of

Question # 2

The graph between pressure and volume at constant temperature for a gas is

Question # 3

The rate of diffusion of a gas in

Question # 4

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :

Question # 5

Boyle's law doesn't fail even :

Question # 6

The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :

Question # 7

The molar value of CO2 is maximum at :

Question # 8

A graph b/w P and 1/V at constant temperature and number of moles is parallel to :

Question # 9

Boyle's law does not fall even

Question # 10

Number of molecules in one dm3 of water is close to :

Question # 11

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 12

All gases can be compressed by

Question # 13

The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to

Question # 14

A graph between P and PV at constant temperature and number of mole is parallel to

Question # 15

Which of the following will have the same number of molecules at STP ?

Question # 16

In Boyle's law which of the following pair is variable :

Question # 17

In Boyle's law which of the following pair is variable

Question # 18

The ratio of volume to temperature on Kelvin scale is constant according to

Question # 19

All gases can be compressed by :

Question # 20

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :

Question # 21

Boyle's law is represented as :

Question # 22

Which statement about gases is not correct ?

Question # 23

The movement of molecules from a region of high pressure to vacuum is called :

Question # 24

Liquids are less common than :

Question # 25

The product of pressure and volume remains constant when temperature and quantity of gas is

Question # 26

In Boyle's law which of the following pair remains constant

Question # 27

In Boyle's law which of the following pair remains constant :

Question # 28

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be

Question # 29

Gases exert pressure on walls of container because the gas molecules :

Question # 30

The density of a gas is directly and volume at constant temperature for a gas is

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 In gases and liquids, temperature is the measure of
A. Average translational kinetic energies of molecules
B. Average vibrational kinetic energies of molecules
C. Average rotational kinetic energies of molecules
D. None of above
2 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
3 In solids, the temperature of is the measure of
A. Rotational kinetic energies
B. transnational kineticenergies
C. Vibrationalkineticenergies
D. None of the above
4 Boyle's law does not fall even
A. Temperature is extremely high
B. Pressure is extremely high
C. Mixture of gases is taken
D. all of above
5 The highest temperature at which a substance can exist as a liquid is called its
A. Critical temperature
B. Zero temperature
C. Absolute temperature
D. None of above
6 A graph between P and 1/V at constant temperature and number moles of a gas meets the
A. y-axis
B. x-axis
C. origin
D. none of above
7 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
8 In Boyle's law which of the following pair is variable :
A. Temperature and quantity of a gas.
B. Pressure and volume
C. Volume and quantity of a gas.
D. Pressure and quantity of a gas.
9 If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :
A. remain unchanged
B. increase four times
C. reduce to 1/4
D. be doubled
10 In gases and liquids, temperature is the measure of :
A. Average transnational kinetic energies of molecules.
B. Average vibrational kinetic energies of molecules.
C. Average rotational kinetic energies of molecules.
D. None of above

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