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

Question # 2

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

Question # 3

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

Question # 4

Keeping the temperature constant, if the gas is expanded

Question # 5

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

Question # 6

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 7

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

Question # 8

Liquids are less common than

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Boyle's law doesn't fail even :

Question # 13

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

Question # 14

The molar value of CO2 is maximum at :

Question # 15

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

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 1/V at constant temperature and number moles of a gas meets the

Question # 18

Cooling happens under the Joule Thomson Effect due to sudden

Question # 19

Which of the following is the simplest form of matter?

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

In Solids, the temperature is the measure of

Question # 25

Which of the following is the simplest form of matter?

Question # 26

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

Question # 27

Which statement about gases is not correct ?

Question # 28

Boyle's law does not fall even

Question # 29

In gases and liquids, temperature is the measure of

Question # 30

The rate of diffusion of a gas in

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 A graph between P and PV at constant temperature and number of mole is parallel to
A. y axis
B. z axis
C. x axis
D. pressure axis
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 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
4 According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between
A. V and T
B. P and V
C. P and 1/V
D. P and PV
5 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
6 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.
7 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
8 In gases and liquids, temperature is the measure of
A. Average translational kinetic energies of molecules
B. Average vibrational kinetic energies of molecules
C. Average rotational kinetic energies of molecules
D. None of above
9

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
10

Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid state
C. Solid state
D. All of above

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