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

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

Question # 2

Absolute temperature of a gas is proportional to

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The rate of diffusion of a gas is :

Question # 10

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

Question # 11

Which of the following is the simplest form of matter?

Question # 12

The intramolecular force in gases are :

Question # 13

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

Question # 14

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

Question # 15

Cooling happens under the Joule Thomson Effect due to sudden

Question # 16

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

Question # 17

In Solids, the temperature is the measure of

Question # 18

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

Question # 19

Keeping the temperature constant, if the gas is expanded

Question # 20

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

Question # 21

Boyle's law is represented as :

Question # 22

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

Question # 23

Boyle's law doesn't fail even :

Question # 24

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

Question # 25

All gases can be compressed by :

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 A graph between P and 1/V at constant temperature and number moles of a gas meets the
A. y-axis
B. x-axis
C. origin
D. none of above
2 The movement of gas molecules from a region of high pressure to vacuum is called
A. Evaportation
B. Effusion
C. Conduction
D. Diffusion
3 At constant temperature when pressure of a gas is plotted against volume, the curve is
A. Slanting straight line
B. Parabolic
C. Staight line, parallel to pressure axis
D. OF neither type
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 shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
6 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
7 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
8 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
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 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

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