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

Liquids are less common than

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

In Solids, the temperature is the measure of

Question # 6

Which statement about gases is not correct ?

Question # 7

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

Question # 8

The rate of diffusion of a gas in

Question # 9

Keeping the temperature constant, if the gas is expanded

Question # 10

Which of the following is the simplest form of matter?

Question # 11

Gases shows uniform behavior toward their :

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Gases show uniform behaviour towards their

Question # 16

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

Question # 17

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

Question # 18

The intramolecular forces in gases are

Question # 19

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

Question # 20

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

Question # 21

In gases and liquids, temperature is the measure of

Question # 22

Which Statement about gases is not correct?

Question # 23

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

Question # 24

Boyle's law is represented as :

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Liquids are less common than :
A. Solids
B. Plasmas
C. Gases
D. All of above
3 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
4 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
5 Cooling happens under the Joule Thomson Effect due to sudden :
A. Contraction
B. Absortption
C. Expansion
D. All of above
6 The highest temperature at which a substance can exist as a liquid is called its
A. Critical temperature
B. Zero temperature
C. Absolute temperature
D. None of above
7 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.
8

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
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 A graph b/w P and 1/V at constant temperature and number of moles is parallel to :
A. None of above
B. X-axis
C. Z-axis
D. Y-axis

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