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

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

Boyle's law does not fall even

Question # 8

The intramolecular forces in gases are

Question # 9

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

Question # 10

Cooling happens under the Joule Thomson Effect due to sudden

Question # 11

The rate of diffusion of a gas is :

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

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

Question # 14

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

Question # 15

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 16

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

Question # 17

The molar value of CO2 is maximum at :

Question # 18

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

Question # 19

Absolute temperature of a gas is proportional to

Question # 20

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

Question # 21

Which statement about gases is not correct ?

Question # 22

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

Question # 23

Liquids are less common than

Question # 24

All gases can be compressed by

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

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

Question # 28

In gases and liquids, temperature is the measure of

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
2 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
3

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
4 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
5 Gases show uniform behaviour towards their
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
6 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
7 The intramolecular forces in gases are
A. Weak
B. Normal
C. Very weak
D. Strong
8 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.
9

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
10 In gases and liquids, temperature is the measure of
A. Average translational kinetic energies of molecules
B. Average vibrational kinetic energies of molecules
C. Average rotational kinetic energies of molecules
D. None of above

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    ahsan

    20 Jul 2019

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