ECAT Pre Engineering Chemistry Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 4 Liquids & Solids

Try The MCQ's Test For ECAT Chemistry Chapter 4 Liquids & Solids

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ECAT Chemistry Chapter 4 Liquids & Solids

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Question # 1

London dispersion forces are alos called:

Question # 2

Hydrogen bonding is present in one of the following pairs:

Question # 3

H2S is a gas while H2O is a liquid at room temperature. It is due to:

Question # 4

Hydrogen bonding is present between the molecules of

Question # 5

The molecules of CO2in dry ice from the

Question # 6

Evaporation of water is possible at

Question # 7

The density of water decreases, When it is freezed at 0°C

Question # 8

Which of the following is a pseudo solid

Question # 9

HF has exceptionally low acidic strength due to:

Question # 10

Which one of the following is weakest inter molecular force?

Question # 11

The gases can be converted into liquids by:

Question # 12

The boiling point of NH3is maximum among the hydrides of group V elements due to

Question # 13

Ionic Solids are characterized by

Question # 14

Debye forces are present in on of the following pairs:

Question # 15

The intermolecular forces in liquids are

Question # 16

Escape of high energy molecules from the surface of liquid is called:

Question # 17

Evaporation of water is possible at:

Question # 18

Force of attraction between atoms of He is

Question # 19

Trend of boiling point of halogens from fluorine to Iodine is that it

Question # 20

Chloroform and acetone are soluble in each other due to:

Question # 21

Which of the following liquids has low vapour pressure at 250C

Question # 22

In a group on going downward, polarizability generally

Question # 23

Chloroform and acetone are soluble in each other due to

Question # 24

]Which of the following is a pseudo solid?

Question # 25

Force of attraction b/w atoms of He is :

Question # 26

The strongest forces are

Question # 27

HF has exceptionally low acidic strengths due to

Question # 28

Which of the following liquids has low vapor pressure at 25°C:

Question # 29

The only forces are London dispersion forces among the

Question # 30

Rate of evaporation and rate of condensation at equilibrium

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 In a group on going downward, polarizability generally
A. Decreases
B. Increases
C. Remains constant
D. Negligible
2 Amorphous solids:
A. Have a sharp melting point
B. Undergo clean cleavage when cut with knife
C. Have a perfect arrangement of atoms
D. Can possesses small regions of orderly arrangement of atoms
3 The gases can be converted into liquids by:
A. Increasing the pressure only.
B. Lowering temperature and increasing pressure
C. Increasing pressure and bringing temperature below critical points
D. Lowering temperature only
4 Ionic solids are characterized by :
A. Low meeting points
B. Good conductivity in solid state
C. High vapor pressure
D. Solubility in polar solvents
5 At sea level and at 100°C the vapor pressure of water in an open system is:
A. 1000 mm Hg
B. 760 mm Hg
C. 730 mm Hg
D. 670 mm Hg
6 London dispersion forces are also called
A. Hydrogen bonding
B. Debye forces
C. Van de Waal's forces
D. Instantaneous dipole-induced dipole forces
7 Rate of evaporation and rate of condensation at equilibrium:
A. Become very low
B. Become very high
C. Become equal
D. Can never be equal.
8 Which one of the following is the weakest intermolecular force
A. Dipole induced dipole forces
B. Ionic dipole forces
C. Electrostatics forces between ions
D. Dipole-dipole forces
9 The density of water decreases, when it is freezed at 0oC because of
A. Change of bond lengths
B. Change of bond angles
C. Cubic structure of ice
D. Empty spaces present in the structure of Ice
10 Hydrogen bonding is present in one of the following pairs:
A. NH3
B. H2O
C. HF
D. All of above

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