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

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

Question # 2

Boyle's law doesn't fail even :

Question # 3

The rate of diffusion of a gas in

Question # 4

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

Question # 5

Boyle's law does not fall even

Question # 6

The intramolecular force in gases are :

Question # 7

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

Question # 8

A real gas obeying van der Waals' equation will resemble ideal gas if :

Question # 9

Absolute temperature of a gas is proportional to

Question # 10

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

Question # 11

The molar value of CO2 is maximum at :

Question # 12

Keeping the temperature constant, if the gas is expanded

Question # 13

Gases show uniform behaviour towards their

Question # 14

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 15

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

Question # 16

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

Question # 17

Liquids are less common than

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

Cooling happens under the Joule Thomson Effect due to sudden

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

Gases shows uniform behavior toward their :

Question # 28

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

Question # 29

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

Question # 30

In gases and liquids, temperature is the measure of :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 For a gas obeying Boyle's law if pressure is doubled, the volume becomes
A. Remains constant
B. Double
C. One half
D. None of above
3 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
4 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
5 A graph between P and 1/V at constant temperature and number moles of a gas meets the
A. y-axis
B. x-axis
C. origin
D. none of above
6 The product of pressure and volume remains constant when temperature and quantity of gas is
A. zero
B. variable
C. kept constant
D. None of these
7 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
8 The molar value of CO2 is maximum at :
A. STP
B. 127°C and 1 atm
C. 0°C and 2 atm
D. 273°C and 2 atm
9 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
10 In Solids, the temperature is the measure of
A. Rotational kinetic energies
B. Translational kinetic energies
C. Vibrational kinetic energies
D. None of above

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  • ahsan

    ahsan

    20 Jul 2019

    hello

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