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

In Solids, the temperature is the measure of

Question # 2

Gases shows uniform behavior toward their :

Question # 3

Gases show uniform behaviour towards their

Question # 4

In gases and liquids, temperature is the measure of

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

The rate of diffusion of a gas in

Question # 13

Cooling happens under the Joule Thomson Effect due to sudden

Question # 14

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

Question # 15

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

Question # 16

Which of the following is the simplest form of matter?

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

The rate of diffusion of a gas is :

Question # 22

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

Question # 23

The molar value of CO2 is maximum at :

Question # 24

Which statement about gases is not correct ?

Question # 25

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

Question # 26

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

Question # 27

In solids, the temperature of is the measure of

Question # 28

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

Question # 29

Keeping the temperature constant, if the gas is expanded

Question # 30

Cooling happens under the Joule Thomson Effect due to sudden :

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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 transnational kinetic energies of molecules.
B. Average vibrational kinetic energies of molecules.
C. Average rotational kinetic energies of molecules.
D. None of above
2 The movement of molecules from a region of high pressure to vacuum is called :
A. Evaporation
B. Effusion
C. Conduction
D. Difusion
3 Boyle's law doesn't fail even :
A. Temperature is extremely high
B. Pressure is extremely high
C. Mixture of gas is taken
D. All of above
4 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
5 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
6 The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are
A. Charle's Law
B. Graham's Law
C. Boyle's Law
D. Gas Laws
7

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
8 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
9 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
10 Which statement about gases is not correct ?
A. The spread throughout the vessel.
B. Pressure is due to collision
C. There are large spaces between the molecules.
D. molecules are arranged regularly.

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