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

Which statement about gases is not correct ?

Question # 2

Which of the following is the simplest form of matter?

Question # 3

The intramolecular force in gases are :

Question # 4

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

Question # 5

In Solids, the temperature is the measure of

Question # 6

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

Question # 7

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

Question # 8

Boyle's law is represented as :

Question # 9

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

Question # 10

In solids, the temperature of is the measure of

Question # 11

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

Question # 12

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

Question # 13

In gases and liquids, temperature is the measure of

Question # 14

Boyle's law doesn't fail even :

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

All gases can be compressed by :

Question # 20

All gases can be compressed by

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Keeping the temperature constant, if the gas is expanded

Question # 29

Gases show uniform behaviour towards their

Question # 30

Cooling happens under the Joule Thomson Effect due to sudden

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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 Liquids are less common than
A. Solids
B. Plasmas
C. Gases
D. All of above
3 The rate of diffusion of a gas is :
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
4 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
5 Gases of air, always remain in random motion and do not settle due to
A. Difference in molecular masses of air gases
B. Difference in partial pressure of gas molecules
C. Unequal number of different gas molecules
D. Elastic collision of gas molecules
6

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
7 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
8 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
9 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
10 Liquids are less common than :
A. Solids
B. Plasmas
C. Gases
D. All of above

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