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

In gases and liquids, temperature is the measure of

Question # 2

All gases can be compressed by

Question # 3

The intramolecular forces in gases are

Question # 4

At constant temperature when pressure of a gas is plotted against volume, the curve is

Question # 5

Gases show uniform behaviour towards their

Question # 6

Which Statement about gases is not correct?

Question # 7

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

Question # 8

In Solids, the temperature is the measure of

Question # 9

Liquids are less common than

Question # 10

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

Question # 11

The molar value of CO2 is maximum at :

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Liquids are less common than :

Question # 19

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

Question # 20

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

Question # 21

Keeping the temperature constant, if the gas is expanded

Question # 22

Which statement about gases is not correct ?

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

Gases shows uniform behavior toward their :

Question # 28

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

Question # 29

Which of the following is the simplest form of matter?

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 Gases deviate from ideal behavior at high pressure. Which of the following is correct for non-ideality ?
A. At high pressure, the gas molecules move in one direction only.
B. At high pressure, the collisions between the gas molecules are increased manifold.
C. At high pressure, the volume of gas becomes insignificant.
D. At high pressure, the inter molecular attraction become significant.
2 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
3 According to Boyle's law, which parameters give a straight line parallel to axis-s, when we plot a graph between:
A. V and T
B. P and V
C. P and 1/V
D. P and PV
4 In Solids, the temperature is the measure of
A. Rotational kinetic energies
B. Translational kinetic energies
C. Vibrational kinetic energies
D. None of above
5 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
6 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
7 Keeping the temperature constant, if the gas is expanded
A. kinetic energy of molecules will increase
B. Number of gas molecules increases
C. Temperature will increases
D. Pressure will decrease
8 The rate of diffusion of a gas in
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
9 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
10 The density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to
A. Viscosity
B. Molar mass
C. Momentum
D. All of above

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