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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

The rate of diffusion of a gas in

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Boyle's law doesn't fail even :

Question # 13

The intramolecular forces in gases are

Question # 14

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

Question # 15

Which of the following is the simplest form of matter?

Question # 16

In gases and liquids, temperature is the measure of

Question # 17

In gases and liquids, temperature is the measure of :

Question # 18

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

Question # 19

All gases can be compressed by

Question # 20

Gases show uniform behaviour towards their

Question # 21

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

Question # 22

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

Question # 23

Liquids are less common than :

Question # 24

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

Question # 25

Which of the following is the simplest form of matter?

Question # 26

The intramolecular force in gases are :

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

Question # 29

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

Question # 30

Liquids are less common than

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 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.
3 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
4 The ratio of volume to temperature on Kelvin scale is constant according to
A. Charle's law
B. Newton's law
C. Coulomb's law
D. Boyle's law
5 The molar value of CO2 is maximum at :
A. STP
B. 127°C and 1 atm
C. 0°C and 2 atm
D. 273°C and 2 atm
6 All gases can be compressed by :
A. Keeping constant pressure
B. Decreasing pressure
C. Increasing pressure
D. None of the above
7 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.
8 The density of a gas is directly and volume at constant temperature for a gas is
A. Isobaric
B. Isothermal
C. Isotherm
D. None of above
9 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
10 A real gas obeying van der Waals' equation will resemble ideal gas if :
A. both 'a' and 'b' are large
B. both 'a' and 'b' are small
C. 'a' is small and 'b' is large
D. 'a' is large and 'b' is small

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