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

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

Question # 2

The intramolecular forces in gases are

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

Which statement about gases is not correct ?

Question # 5

The molar value of CO2 is maximum at :

Question # 6

Keeping the temperature constant, if the gas is expanded

Question # 7

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

Question # 8

Boyle's law does not fall even

Question # 9

All gases can be compressed by

Question # 10

Cooling happens under the Joule Thomson Effect due to sudden :

Question # 11

In Solids, the temperature is the measure of

Question # 12

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

Question # 13

In solids, the temperature of is the measure of

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

Absolute temperature of a gas is proportional to

Question # 18

Liquids are less common than :

Question # 19

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

Question # 20

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

Question # 21

Boyle's law is represented as :

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

The rate of diffusion of a gas in

Question # 29

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

Question # 30

All gases can be compressed by :

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 The intramolecular force in gases are :
A. Weak
B. Normal
C. Very weak
D. Strong
4

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
5 Boyle's law is represented as :
A.

P∞ 1/T

B. V and 1/P
C. P∞P
D. P∞1/P
6 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
7 The product of pressure and volume remains constant when temperature and quantity of gas is
A. zero
B. variable
C. kept constant
D. None of these
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

Which of the following is the simplest form of matter?
A. Gaseous state
B. Liquid state
C. Solid state
D. All of above
10 Absolute temperature of a gas is proportional to
A. Rotational kinetic energy
B. Translational kinetic energy
C. Vibrational kinetic energy
D. Potential energy

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