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

A graph between P and PV at constant temperature and number of mole is parallel to

Question # 2

Boyle's law is represented as :

Question # 3

Which of the following is the simplest form of matter?

Question # 4

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

Question # 5

Which statement about gases is not correct ?

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Gases shows uniform behavior toward their :

Question # 13

Which Statement about gases is not correct?

Question # 14

Liquids are less common than :

Question # 15

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

Question # 16

The intramolecular forces in gases are

Question # 17

Cooling happens under the Joule Thomson Effect due to sudden

Question # 18

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

Question # 19

In Solids, the temperature is the measure of

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

The molar value of CO2 is maximum at :

Question # 24

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

Question # 25

All gases can be compressed by

Question # 26

The rate of diffusion of a gas is :

Question # 27

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

Question # 28

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

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

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
2 In Boyle's law which of the following pair is variable :
A. Temperature and quantity of a gas.
B. Pressure and volume
C. Volume and quantity of a gas.
D. Pressure and quantity of a gas.
3 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
4 Keeping the temperature constant, if the gas is expanded
A. kinetic energy of molecules will increase
B. Number of gas molecules increases
C. Temperature will increases
D. Pressure will decrease
5 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
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 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
8 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
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 A graph b/w P and 1/V at constant temperature and number of moles is parallel to :
A. Y-axis
B. Z-axis
C. X-axis
D. None of above

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  • ahsan

    ahsan

    20 Jul 2019

    hello

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