ECAT Pre Engineering Chemistry Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 3 Gases

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ECAT Chemistry Chapter 3 Gases

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Question # 1

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

Question # 2

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

Question # 3

Gases show uniform behaviour towards their

Question # 4

In gases and liquids, temperature is the measure of :

Question # 5

Liquids are less common than

Question # 6

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

Question # 7

Boyle's law is represented as :

Question # 8

Pressure remaining constant, at which temperature volume of gas will become twice of what it is at 0°C ?

Question # 9

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

Question # 10

The rate of diffusion of a gas in

Question # 11

The molar value of CO2 is maximum at :

Question # 12

A real gas obeying van der Waals' equation will resemble ideal gas if :

Question # 13

Cooling happens under the Joule Thomson Effect due to sudden

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

Which Statement about gases is not correct?

Question # 18

All gases can be compressed by :

Question # 19

Absolute temperature of a gas is proportional to

Question # 20

The highest temperature at which a substance can exist as a liquid is called its

Question # 21

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

Question # 22

A graph between P and 1/V at constant temperature and number moles of a gas meets the

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

The deviation of a gas from ideal behavior is maximum at :

Question # 27

Liquids are less common than :

Question # 28

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

Question # 29

The order of the rate of diffusion of gases NH3,SO2, CL2, and CO2 IS :

Question # 30

The intramolecular forces in gases are

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 The ratio of volume to temperature on Kelvin scale is constant according to
A. Charle's law
B. Newton's law
C. Coulomb's law
D. Boyle's law
2 Liquids are less common than :
A. Solids
B. Plasmas
C. Gases
D. All of 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 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
5 The molar value of CO2 is maximum at :
A. STP
B. 127°C and 1 atm
C. 0°C and 2 atm
D. 273°C and 2 atm
6 The movement of gas molecules from a region of high pressure to vacuum is called
A. Evaportation
B. Effusion
C. Conduction
D. Diffusion
7 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
8

Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid state
C. Solid state
D. All of above
9 The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to
A. Viscosity
B. Molar mass
C. Momentum
D. All of above
10 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P

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