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

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

Question # 3

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

Question # 4

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

Question # 5

Gases exert pressure on walls of container because the gas molecules :

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

Boyle's law does not fall even

Question # 10

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

Question # 11

Liquids are less common than

Question # 12

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

Question # 13

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

Question # 14

Boyle's law doesn't fail even :

Question # 15

Gases show uniform behaviour towards their

Question # 16

In gases and liquids, temperature is the measure of

Question # 17

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

Question # 18

Which Statement about gases is not correct?

Question # 19

Gases shows uniform behavior toward their :

Question # 20

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

Question # 21

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

Question # 22

Which of the following is the simplest form of matter?

Question # 23

The intramolecular force in gases are :

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

In solids, the temperature of is the measure of

Question # 29

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

Question # 30

In gases and liquids, temperature is the measure of :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Boyle's law does not fall even
A. Temperature is extremely high
B. Pressure is extremely high
C. Mixture of gases is taken
D. all of above
4 The movement of molecules from a region of high pressure to vacuum is called :
A. Evaporation
B. Effusion
C. Conduction
D. Difusion
5 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
6

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
7 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
8

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
9 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
10 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

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  • ahsan

    ahsan

    20 Jul 2019

    hello

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