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

00:00
Question # 1

All gases can be compressed by :

Question # 2

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

Question # 3

The intramolecular forces in gases are

Question # 4

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

Question # 5

Which of the following is the simplest form of matter?

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The rate of diffusion of a gas in

Question # 11

Boyle's law does not fall even

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Boyle's law is represented as :

Question # 16

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

Question # 17

In gases and liquids, temperature is the measure of :

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

The highest temperature at which a substance can exist as a liquid is called its

Question # 23

A real gas obeying van der Waals' equation will resemble ideal gas if :

Question # 24

Which of the following is the simplest form of matter?

Question # 25

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

Question # 26

The molar value of CO2 is maximum at :

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

Liquids are less common than

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
2 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
3 Liquids are less common than
A. Solids
B. Plasmas
C. Gases
D. All of above
4

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

280 CM3 of CO2 and 280 CM3 of N2O

B.

11.2 dm3 of O2 and 32 g of O2

C.

44 g of CO2 and 11.2 dm3 of CO

D.

28 g of N2 and 5.6 dm3 of oxygen
5 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
6 All gases can be compressed by
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of above
7 Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid State
C. Solid State
D. All of above
8 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
9 For a gas obeying Boyle's law if pressure is doubled, the volume becomes :
A. Remain constant
B. Double
C. One half
D. None of above
10

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?
A. Temperature is lowered and pressure is increased
B. Temperature is increasedand pressure is lowered
C. Temperature and pressure both are lowered
D. Temperature and pressure both are increased

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