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

Absolute temperature of a gas is proportional to

Question # 2

The molar value of CO2 is maximum at :

Question # 3

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

Question # 4

In Solids, the temperature is the measure of

Question # 5

The intramolecular force in gases are :

Question # 6

The rate of diffusion of a gas in

Question # 7

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

Question # 8

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

Question # 9

Liquids are less common than :

Question # 10

Which statement about gases is not correct ?

Question # 11

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

Question # 12

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

Question # 13

Which Statement about gases is not correct?

Question # 14

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

Question # 15

Which of the following is the simplest form of matter?

Question # 16

In solids, the temperature of is the measure of

Question # 17

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

Question # 18

Boyle's law does not fall even

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

Keeping the temperature constant, if the gas is expanded

Question # 27

All gases can be compressed by

Question # 28

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

Question # 29

In gases and liquids, temperature is the measure of :

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 The rate of diffusion of a gas in
A. Inversely proportional to its density
B. Inversely proportional to square root of its molecular mass
C. Directly proportional to molecular mass
D. Directly proportional to its density
2 The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :
A. Charles's law
B. Graham's law
C. Boyle's law
D. Gas law
3 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
4 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
5 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
6 In Solids, the temperature is the measure of
A. Rotational kinetic energies
B. Translational kinetic energies
C. Vibrational kinetic energies
D. None of above
7 Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?
A. At high pressure, the gas molecules move in one direction only.
B. At high pressure, the collisions between the gas molecules are increased manifold.
C. At high pressure, the volume of gas becomes insignificant.
D. At high pressure, the inter molecular attraction become significant.
8 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
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 Gases shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above

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