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

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

Question # 2

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 3

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

Question # 4

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

Question # 5

Which of the following is the simplest form of matter?

Question # 6

The molar value of CO2 is maximum at :

Question # 7

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

Question # 8

Boyle's law is represented as :

Question # 9

Which statement about gases is not correct ?

Question # 10

Boyle's law doesn't fail even :

Question # 11

Which Statement about gases is not correct?

Question # 12

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

Question # 13

In gases and liquids, temperature is the measure of :

Question # 14

All gases can be compressed by

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Liquids are less common than :

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

All gases can be compressed by :

Question # 23

Gases shows uniform behavior toward their :

Question # 24

Gases show uniform behaviour towards their

Question # 25

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

Question # 26

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

Question # 27

The rate of diffusion of a gas is :

Question # 28

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

Question # 29

The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 In Boyle's law which of the following pair remains constant
A. Temperature and quality of a gas
B. Pressure and quality of a gas
C. Temperature and pressure
D. Temperature and quantity of a gas
3 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
4 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
5 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
6 Which Statement about gases is not correct?
A. They spread throughout the vessel
B. Pressure is due to collision
C. There are larger spaces between the molecules
D. Molecules are arranged regularly
7 Boyle's law does not fall even
A. Temperature is extremely high
B. Pressure is extremely high
C. Mixture of gases is taken
D. all of above
8 According to Boyle's law, which parameters give a straight line parallel to axis-s, when we plot a graph between:
A. V and T
B. P and V
C. P and 1/V
D. P and PV
9

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

546

B. 200
C. 546K
D. 273K
10 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

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