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

Question # 2

At constant temperature when pressure of a gas is plotted against volume, the curve is

Question # 3

According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between

Question # 4

The intramolecular force in gases are :

Question # 5

Which of the following is the simplest form of matter?

Question # 6

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

Question # 7

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

Question # 8

Liquids are less common than

Question # 9

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

Question # 10

The molar value of CO2 is maximum at :

Question # 11

In gases and liquids, temperature is the measure of :

Question # 12

Boyle's law is represented as :

Question # 13

The rate of diffusion of a gas in

Question # 14

Which statement about gases is not correct ?

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

Which of the following is the simplest form of matter?

Question # 21

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

Question # 22

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 23

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

Question # 24

The intramolecular forces in gases are

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

In solids, the temperature of is the measure of

Question # 27

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

Question # 28

Gases shows uniform behavior toward their :

Question # 29

The rate of diffusion of a gas is :

Question # 30

Boyle's law doesn't fail even :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Cooling happens under the Joule Thomson Effect due to sudden
A. Contraction
B. Absorption
C. Expansion
D. All of above
3 The rate of diffusion of a gas is :
A. Inversely proportional to its density
B. Inversely proportional to square root of its molecular mass
C. Directly proportional to molecular mass
D. Directly proportional to its density
4 The movement of gas molecules from a region of high pressure to vacuum is called
A. Evaportation
B. Effusion
C. Conduction
D. Diffusion
5 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
6 For a gas obeying Boyle's law if pressure is doubled, the volume becomes :
A. Remain constant
B. Double
C. One half
D. None of above
7 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
8 Which Statement about gases is not correct?
A. They spread throughout the vessel
B. Pressure is due to collision
C. There are larger spaces between the molecules
D. Molecules are arranged regularly
9 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
10 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong

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