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 intramolecular forces in gases are

Question # 2

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

Question # 3

In solids, the temperature of is the measure of

Question # 4

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

Question # 5

In Solids, the temperature is the measure of

Question # 6

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

Question # 7

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

Question # 8

Cooling happens under the Joule Thomson Effect due to sudden

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Boyle's law doesn't fail even :

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

All gases can be compressed by :

Question # 18

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

Question # 19

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

Question # 20

Which of the following is the simplest form of matter?

Question # 21

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

Question # 22

Absolute temperature of a gas is proportional to

Question # 23

Which statement about gases is not correct ?

Question # 24

In gases and liquids, temperature is the measure of

Question # 25

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

Question # 26

Boyle's law does not fall even

Question # 27

Which of the following is the simplest form of matter?

Question # 28

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

Question # 29

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

Question # 30

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

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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 Gases of air, always remain in random motion and do not settle due to
A. Difference in molecular masses of air gases
B. Difference in partial pressure of gas molecules
C. Unequal number of different gas molecules
D. Elastic collision of gas molecules
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 rate of diffusion of a gas in
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
5 In gases and liquids, temperature is the measure of
A. Average translational kinetic energies of molecules
B. Average vibrational kinetic energies of molecules
C. Average rotational kinetic energies of molecules
D. None of above
6 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
7 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
8 Boyle's law doesn't fail even :
A. Temperature is extremely high
B. Pressure is extremely high
C. Mixture of gas is taken
D. All of above
9 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
10 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.

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