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

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

Question # 2

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

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

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

Question # 5

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

Question # 6

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

Question # 7

Gases exert pressure on walls of container because the gas molecules

Question # 8

The intramolecular forces in gases are

Question # 9

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

Question # 10

Gases shows uniform behavior toward their :

Question # 11

Keeping the temperature constant, if the gas is expanded

Question # 12

Which of the following will have the same number of molecules at STP ?

Question # 13

Liquids are less common than :

Question # 14

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

Question # 15

In Solids, the temperature is the measure of

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

Gases show uniform behaviour towards their

Question # 23

The molar value of CO2 is maximum at :

Question # 24

All gases can be compressed by :

Question # 25

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

Question # 26

All gases can be compressed by

Question # 27

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

Question # 28

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

Question # 29

Cooling happens under the Joule Thomson Effect due to sudden

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 A real gas obeying van der Waals' equation will resemble ideal gas if :
A. both 'a' and 'b' are large
B. both 'a' and 'b' are small
C. 'a' is small and 'b' is large
D. 'a' is large and 'b' is small
2 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
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 If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :
A. remain unchanged
B. increase four times
C. reduce to 1/4
D. be doubled
5 The movement of gas molecules from a region of high pressure to vacuum is called
A. Evaportation
B. Effusion
C. Conduction
D. Diffusion
6 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
7 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.
8 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
9 In solids, the temperature of is the measure of
A. Rotational kinetic energies
B. transnational kineticenergies
C. Vibrationalkineticenergies
D. None of the above
10 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P

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