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

Boyle's law doesn't fail even :

Question # 2

Gases shows uniform behavior toward their :

Question # 3

In gases and liquids, temperature is the measure of

Question # 4

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

Question # 5

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

Question # 6

In Solids, the temperature is the measure of

Question # 7

Which Statement about gases is not correct?

Question # 8

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

Question # 9

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

Question # 10

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?

Question # 11

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

Question # 12

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

Question # 13

Which of the following is the simplest form of matter?

Question # 14

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

Question # 15

The molar value of CO2 is maximum at :

Question # 16

In solids, the temperature of is the measure of

Question # 17

The intramolecular forces in gases are

Question # 18

Absolute temperature of a gas is proportional to

Question # 19

Liquids are less common than :

Question # 20

Gases show uniform behaviour towards their

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

The rate of diffusion of a gas is :

Question # 25

Boyle's law does not fall even

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

All gases can be compressed by :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?
A. Temperature is lowered and pressure is increased
B. Temperature is increasedand pressure is lowered
C. Temperature and pressure both are lowered
D. Temperature and pressure both are increased
2 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
3 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
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 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
6 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
7 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
8 In solids, the temperature of is the measure of
A. Rotational kinetic energies
B. transnational kineticenergies
C. Vibrationalkineticenergies
D. None of the above
9 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
10 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

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