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

Question # 2

Keeping the temperature constant, if the gas is expanded

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 7

Which of the following is the simplest form of matter?

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Gases shows uniform behavior toward their :

Question # 12

Cooling happens under the Joule Thomson Effect due to sudden

Question # 13

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

Question # 14

The rate of diffusion of a gas is :

Question # 15

The intramolecular force in gases are :

Question # 16

Which of the following is the simplest form of matter?

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

Gases show uniform behaviour towards their

Question # 21

Boyle's law doesn't fail even :

Question # 22

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

Question # 23

The intramolecular forces in gases are

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

In gases and liquids, temperature is the measure of :

Question # 28

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

Question # 29

The density of a gas is directly and volume at constant temperature for a gas is

Question # 30

The molar value of CO2 is maximum at :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
2

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

546

B. 200
C. 546K
D. 273K
3 Gases shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
4 If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be
A. Remain unchanged
B. Doubled
C. Reduced
D. Increased four times
5 Which statement about gases is not correct ?
A. The spread throughout the vessel.
B. Pressure is due to collision
C. There are large spaces between the molecules.
D. molecules are arranged regularly.
6 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
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 intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
9

Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid state
C. Solid state
D. All of above
10 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.

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