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

Gases show uniform behaviour towards their

Question # 2

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

Question # 3

Keeping the temperature constant, if the gas is expanded

Question # 4

Boyle's law does not fall even

Question # 5

Gases exert pressure on walls of container because the gas molecules

Question # 6

The rate of diffusion of a gas is :

Question # 7

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

Question # 8

The molar value of CO2 is maximum at :

Question # 9

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

Question # 10

Boyle's law is represented as :

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 17

Liquids are less common than

Question # 18

Boyle's law doesn't fail even :

Question # 19

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

Question # 20

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

Question # 21

In gases and liquids, temperature is the measure of :

Question # 22

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

Question # 23

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

Question # 24

At constant temperature when pressure of a gas is plotted against volume, the curve is

Question # 25

Absolute temperature of a gas is proportional to

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid State
C. Solid State
D. All of above
3 The graph between pressure and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
4 Gases exert pressure on walls of container because the gas molecules
A. Obey gas laws
B. Have definite volume
C. Collide with the walls of container
D. Collide with each other
5 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.
6 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
7

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

6.02/22.4


B.

12.04/22.4 *1023


C.

18/22.4*1023

D.

55.6*6.02*1023 * 1023
8

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
9 The deviation of a gas from ideal behavior is maximum at :
A. -10°C and 5.0 atm
B. -10°C and 2.0 atm
C. 100°C and 2.0 atm
D. 0°C and 2.0 atm
10 According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between
A. V and T
B. P and V
C. P and 1/V
D. P and PV

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    20 Jul 2019

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