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 gases and liquids, temperature is the measure of

Question # 2

The rate of diffusion of a gas is :

Question # 3

Which Statement about gases is not correct?

Question # 4

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

Question # 5

Gases exert pressure on walls of container because the gas molecules

Question # 6

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

Question # 7

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

Question # 8

Boyle's law is represented as :

Question # 9

The intramolecular force in gases are :

Question # 10

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

Question # 11

The intramolecular forces in gases are

Question # 12

Keeping the temperature constant, if the gas is expanded

Question # 13

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

Question # 14

The product of pressure and volume remains constant when temperature and quantity of gas is

Question # 15

In Solids, the temperature is the measure of

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

Which of the following is the simplest form of matter?

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

The rate of diffusion of a gas in

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

The movement of gas 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 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 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
3 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
4 The deviation of a gas from ideal behavior is maximum at :
A. -10°C and 5.0 atm
B. -10°C and 2.0 atm
C. 100°C and 2.0 atm
D. 0°C and 2.0 atm
5

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

6.02/22.4


B.

12.04/22.4 *1023


C.

18/22.4*1023

D.

55.6*6.02*1023 * 1023
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 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
8 In Solids, the temperature is the measure of
A. Rotational kinetic energies
B. Translational kinetic energies
C. Vibrational kinetic energies
D. None of above
9 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
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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  • ahsan

    ahsan

    20 Jul 2019

    hello

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