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

Question # 2

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

Question # 3

In solids, the temperature of is the measure of

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

The rate of diffusion of a gas in

Question # 8

Cooling happens under the Joule Thomson Effect due to sudden

Question # 9

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

Question # 10

In gases and liquids, temperature is the measure of

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Which of the following is the simplest form of matter?

Question # 16

In Solids, the temperature is the measure of

Question # 17

Keeping the temperature constant, if the gas is expanded

Question # 18

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 19

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

Question # 20

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

Question # 21

All gases can be compressed by :

Question # 22

Gases shows uniform behavior toward their :

Question # 23

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

Question # 24

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

Question # 25

The intramolecular forces in gases are

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

Boyle's law doesn't fail even :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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.
2 At constant temperature when pressure of a gas is plotted against volume, the curve is
A. Slanting straight line
B. Parabolic
C. Staight line, parallel to pressure axis
D. OF neither type
3

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
4 Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :
A. 1/2
B. 8/9
C. 1/9
D. 16/17
5 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
6 Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid State
C. Solid State
D. All of above
7 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.
8 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
9 Gases shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
10 Cooling happens under the Joule Thomson Effect due to sudden :
A. Contraction
B. Absortption
C. Expansion
D. All of above

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