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

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

Question # 2

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

Question # 3

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

Question # 4

The rate of diffusion of a gas in

Question # 5

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

Question # 6

In gases and liquids, temperature is the measure of :

Question # 7

The intramolecular forces in gases are

Question # 8

Which of the following is the simplest form of matter?

Question # 9

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

Question # 10

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

Question # 11

Boyle's law does not fall even

Question # 12

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 13

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

Question # 14

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

Question # 15

Boyle's law doesn't fail even :

Question # 16

Cooling happens under the Joule Thomson Effect due to sudden

Question # 17

Liquids are less common than :

Question # 18

Liquids are less common than

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Gases show uniform behaviour towards their

Question # 25

Which statement about gases is not correct ?

Question # 26

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

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

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
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 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
4 Gases shows uniform behavior toward their :
A. Internal conditions
B. External conditions
C. Internal and external conditions
D. None of above
5 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.
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 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
8 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.
9 The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :
A. Charles's law
B. Graham's law
C. Boyle's law
D. Gas law
10 A graph between P and PV at constant temperature and number of mole is parallel to
A. y axis
B. z axis
C. x axis
D. pressure axis

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