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

In gases and liquids, temperature is the measure of

Question # 3

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

Question # 4

Gases shows uniform behavior toward their :

Question # 5

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

Question # 6

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

Question # 7

Absolute temperature of a gas is proportional to

Question # 8

Cooling happens under the Joule Thomson Effect due to sudden

Question # 9

Liquids are less common than :

Question # 10

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

Question # 11

The molar value of CO2 is maximum at :

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Which statement about gases is not correct ?

Question # 16

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

Question # 17

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

Question # 18

The intramolecular force in gases are :

Question # 19

All gases can be compressed by :

Question # 20

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

Question # 21

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

Question # 22

Liquids are less common than

Question # 23

The rate of diffusion of a gas in

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

Which of the following is the simplest form of matter?

Question # 28

In Solids, the temperature is the measure of

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 3 Important MCQ's

Sr.# Question Answer
1

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
2 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.
3 For a gas obeying Boyle's law if pressure is doubled, the volume becomes :
A. Remain constant
B. Double
C. One half
D. None of above
4 Gases exert pressure on walls of container because the gas molecules
A. Obey gas laws
B. Have definite volume
C. Collide with the walls of container
D. Collide with each other
5 Cooling happens under the Joule Thomson Effect due to sudden :
A. Contraction
B. Absortption
C. Expansion
D. All of above
6 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
7 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
8

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

280 CM3 of CO2 and 280 CM3 of N2O

B.

11.2 dm3 of O2 and 32 g of O2

C.

44 g of CO2 and 11.2 dm3 of CO

D.

28 g of N2 and 5.6 dm3 of oxygen
9 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
10 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

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  • ahsan

    ahsan

    20 Jul 2019

    hello

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