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

Question # 2

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

Question # 3

The intramolecular force in gases are :

Question # 4

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

Question # 5

Liquids are less common than :

Question # 6

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

Question # 7

The rate of diffusion of a gas is :

Question # 8

The intramolecular forces in gases are

Question # 9

In gases and liquids, temperature is the measure of :

Question # 10

All gases can be compressed by

Question # 11

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

Question # 12

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

Question # 13

Boyle's law is represented as :

Question # 14

The rate of diffusion of a gas in

Question # 15

In solids, the temperature of is the measure of

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The molar value of CO2 is maximum at :

Question # 20

Which of the following is the simplest form of matter?

Question # 21

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

Question # 22

In gases and liquids, temperature is the measure of

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 30

Gases shows uniform behavior toward their :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
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 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
4 A graph between P and PV at constant temperature and number of mole is parallel to
A. y axis
B. z axis
C. x axis
D. pressure axis
5 The highest temperature at which a substance can exist as a liquid is called its
A. Critical temperature
B. Zero temperature
C. Absolute temperature
D. None of above
6 In gases and liquids, temperature is the measure of :
A. Average transnational kinetic energies of molecules.
B. Average vibrational kinetic energies of molecules.
C. Average rotational kinetic energies of molecules.
D. None of above
7 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
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 The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to
A. Viscosity
B. Molar mass
C. Momentum
D. All of above
10 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

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