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

Boyle's law doesn't fail even :

Question # 2

Gases show uniform behaviour towards their

Question # 3

Which of the following is the simplest form of matter?

Question # 4

Gases exert pressure on walls of container because the gas molecules

Question # 5

Which of the following is the simplest form of matter?

Question # 6

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

Question # 7

In Solids, the temperature is the measure of

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

A graph between P and 1/V at constant temperature and number moles of a gas meets the

Question # 16

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

Question # 17

Boyle's law does not fall even

Question # 18

In solids, the temperature of is the measure of

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

The rate of diffusion of a gas in

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

All gases can be compressed by :

Question # 28

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

Question # 29

The intramolecular forces in gases are

Question # 30

Which statement about gases is not correct ?

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 Cooling happens under the Joule Thomson Effect due to sudden
A. Contraction
B. Absorption
C. Expansion
D. All of above
2 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.
3 The graph between pressure and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
4 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
5 The product of pressure and volume remains constant when temperature and quantity of gas is
A. zero
B. variable
C. kept constant
D. None of these
6 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
7 The density of a gas is directly and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
8 The ratio of volume to temperature on Kelvin scale is constant according to
A. Charle's law
B. Newton's law
C. Coulomb's law
D. Boyle's law
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 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

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