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

The molar value of CO2 is maximum at :

Question # 2

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

Question # 3

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 4

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

Question # 5

Gases exert pressure on walls of container because the gas molecules

Question # 6

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

Question # 7

Keeping the temperature constant, if the gas is expanded

Question # 8

Gases of air, always remain in random motion and do not settle due to

Question # 9

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

Question # 10

Gases show uniform behaviour towards their

Question # 11

Which statement about gases is not correct ?

Question # 12

Gases shows uniform behavior toward their :

Question # 13

Absolute temperature of a gas is proportional to

Question # 14

All gases can be compressed by

Question # 15

Which Statement about gases is not correct?

Question # 16

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

Question # 17

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

Question # 18

Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?

Question # 19

For a gas obeying Boyle's law if pressure is doubled, the volume becomes :

Question # 20

The intramolecular forces in gases are

Question # 21

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

Question # 22

In gases and liquids, temperature is the measure of :

Question # 23

Gases of air always remain in random motion and do not settle due to :

Question # 24

In gases and liquids, temperature is the measure of

Question # 25

The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are

Question # 26

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

Question # 27

Liquids are less common than :

Question # 28

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

Question # 29

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

Question # 30

The intramolecular force in gases are :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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.
2 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
3 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
4 Liquids are less common than
A. Solids
B. Plasmas
C. Gases
D. All of above
5 The movement of molecules from a region of high pressure to vacuum is called :
A. Evaporation
B. Effusion
C. Conduction
D. Difusion
6 Keeping the temperature constant, if the gas is expanded
A. kinetic energy of molecules will increase
B. Number of gas molecules increases
C. Temperature will increases
D. Pressure will decrease
7 A graph between P and PV at constant temperature and number of mole is parallel to
A. y axis
B. z axis
C. x axis
D. pressure axis
8 At constant temperature when pressure of a gas is plotted against volume, the curve is
A. Slanting straight line
B. Parabolic
C. Staight line, parallel to pressure axis
D. OF neither type
9 Cooling happens under the Joule Thomson Effect due to sudden
A. Contraction
B. Absorption
C. Expansion
D. All of above
10 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

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