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

Pressure remaining constant, at which temperature volume of gas will become twice of what it is at 0°C ?

Question # 2

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

Question # 3

The intramolecular forces in gases are

Question # 4

Absolute temperature of a gas is proportional to

Question # 5

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

Question # 6

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

Question # 7

Gases shows uniform behavior toward their :

Question # 8

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

Question # 9

Liquids are less common than

Question # 10

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 11

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

Question # 12

Gases exert pressure on walls of container because the gas molecules

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

Boyle's law is represented as :

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

The rate of diffusion of a gas in

Question # 22

All gases can be compressed by

Question # 23

Which Statement about gases is not correct?

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

In gases and liquids, temperature is the measure of

Question # 28

Boyle's law doesn't fail even :

Question # 29

Gases show uniform behaviour towards their

Question # 30

The intramolecular force in gases are :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy
2 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
3 Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :
A. 1/2
B. 8/9
C. 1/9
D. 16/17
4 If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be
A. Remain unchanged
B. Doubled
C. Reduced
D. Increased four times
5 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
6 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
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 movement of gas molecules from a region of high pressure to vacuum is called
A. Evaportation
B. Effusion
C. Conduction
D. Diffusion
9 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
10

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

6.02/22.4


B.

12.04/22.4 *1023


C.

18/22.4*1023

D.

55.6*6.02*1023 * 1023

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  • ahsan

    ahsan

    20 Jul 2019

    hello

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