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

Cooling happens under the Joule Thomson Effect due to sudden

Question # 2

Gases show uniform behaviour towards their

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The rate of diffusion of a gas is :

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The molar value of CO2 is maximum at :

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Which statement about gases is not correct ?

Question # 16

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

Question # 17

Liquids are less common than

Question # 18

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

Question # 19

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

Question # 20

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 21

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

Question # 22

In solids, the temperature of is the measure of

Question # 23

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

Question # 24

Which of the following is the simplest form of matter?

Question # 25

The intramolecular forces in gases are

Question # 26

Boyle's law doesn't fail even :

Question # 27

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

Question # 28

In Solids, the temperature is the measure of

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
2 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
3 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
4 Gases exert pressure on walls of container because the gas molecules :
A. Obey gas laws.
B. Have definite volume.
C. Collide with the walls of container.
D. Collide with each other.
5 The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :
A. Charles's law
B. Graham's law
C. Boyle's law
D. Gas law
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 graph between pressure and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
8 The density of a gas is directly and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
9 The product of pressure and volume remains constant when temperature and quantity of gas is
A. zero
B. variable
C. kept constant
D. None of these
10 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

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