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

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

Question # 2

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?

Question # 3

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

Question # 4

In gases and liquids, temperature is the measure of

Question # 5

All gases can be compressed by :

Question # 6

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

Question # 7

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

Question # 8

Liquids are less common than

Question # 9

Cooling happens under the Joule Thomson Effect due to sudden

Question # 10

The molar value of CO2 is maximum at :

Question # 11

Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :

Question # 12

The intramolecular forces in gases are

Question # 13

Liquids are less common than :

Question # 14

Keeping the temperature constant, if the gas is expanded

Question # 15

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

Question # 16

The rate of diffusion of a gas is :

Question # 17

Boyle's law does not fall even

Question # 18

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

Question # 19

Which of the following is the simplest form of matter?

Question # 20

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

Question # 21

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

Question # 22

Absolute temperature of a gas is proportional to

Question # 23

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

Question # 24

Which of the following is the simplest form of matter?

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Gases exert pressure on walls of container because the gas molecules

Question # 29

In solids, the temperature of is the measure of

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 Cooling happens under the Joule Thomson Effect due to sudden :
A. Contraction
B. Absortption
C. Expansion
D. All of above
2 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
3 In Boyle's law which of the following pair remains constant
A. Temperature and quality of a gas
B. Pressure and quality of a gas
C. Temperature and pressure
D. Temperature and quantity of a gas
4 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
5 A graph b/w P and 1/V at constant temperature and number of moles is parallel to :
A. None of above
B. X-axis
C. Z-axis
D. Y-axis
6 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
7 Liquids are less common than :
A. Solids
B. Plasmas
C. Gases
D. All of above
8 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
9 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
10 The graph between pressure and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above

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