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

Absolute temperature of a gas is proportional to

Question # 2

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

Question # 3

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

Question # 4

Which of the following is the simplest form of matter?

Question # 5

All gases can be compressed by

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

In gases and liquids, temperature is the measure of :

Question # 10

Keeping the temperature constant, if the gas is expanded

Question # 11

The molar value of CO2 is maximum at :

Question # 12

The rate of diffusion of a gas is :

Question # 13

Liquids are less common than

Question # 14

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

Question # 15

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

Question # 16

Boyle's law does not fall even

Question # 17

Gases shows uniform behavior toward their :

Question # 18

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

Question # 19

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

Question # 20

The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :

Question # 21

The intramolecular force in gases are :

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

The ratio of volume to temperature on Kelvin scale is constant according to

Question # 28

Which statement about gases is not correct ?

Question # 29

Liquids are less common than :

Question # 30

Which Statement about gases is not correct?

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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 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 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
4 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
5 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.
6 The graph between pressure and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
7 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
8 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
9 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
10 In solids, the temperature of is the measure of
A. Rotational kinetic energies
B. transnational kineticenergies
C. Vibrationalkineticenergies
D. None of the above

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