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

00:00
Question # 1

The strongest forces are

Question # 2

Rate of evaporation and rate of condensation at equilibrium

Question # 3

Which one of the following is weakest inter molecular force?

Question # 4

Ionic solids are characterized by :

Question # 5

Which of the following is a pseudo solid?

Question # 6

Ionic Solids are characterized by

Question # 7

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

Question # 8

H2S is a gas which H2O is liquid at room temperature. it is due to

Question # 9

Hydrocarbon molecule with large chain lengths experience:

Question # 10

Force of attraction b/w atoms of He is :

Question # 11

Chloroform and acetone are soluble in each other due to

Question # 12

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

Question # 13

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

Question # 14

A liquid on evaporation causes:

Question # 15

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

Question # 16

The gases can be converted into liquids by:

Question # 17

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

Question # 18

London dispersion forces are alos called:

Question # 19

Debye forces are present in on of the following pairs:

Question # 20

The strongest forces are:

Question # 21

The inter-molecular forces in liquids are:

Question # 22

Polypeptide chains are coiled about one another into a spiral by

Question # 23

Heat of vapourization for liquids with strong dipole-dipole forces will have

Question # 24

A liquid on evaporation causes

Question # 25

Hydrogen bonding is present in one of the following pairs:

Question # 26

Diamond is a bad conductor because:

Question # 27

At sea level and at 1000C the vapour pressure of water in an open system is

Question # 28

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

Question # 29

At sea level and at 100°C the vapor pressure of water in an open system is:

Question # 30

Polypeptide chains are coiled about one another into a spiral by:

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 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.
2 Escape of high energy molecules from the surface of a liquid is called
A. Sublimation
B. Distillation
C. Condensation
D. Evaporation
3 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
4 London dispersion forces are also called:
A. Hydrogen bonding.
B. Debye forces
C. Van der Waal's forces
D. Instantaneous dipole-induced dipole forces.
5 The inter-molecular forces in liquids are:
A. Negligible
B. Very weak
C. Very strong
D. Reasonably strong
6 Force of attraction b/w atoms of He is :
A. London dispersion forces
B. Hydrogen bonding
C. Coordinate covalent bond
D. Covalent bond
7 The only forces are London dispersion forces among the
A. Atoms of He in gaseous state at high temperature
B. Molecules of water in liquid state
C. Molecules of solid I2
D. Molecular of hydrochloric acid gas
8 Escape of high energy molecules from the surface of liquid is called:
A. Sublimation.
B. Distillation.
C. Condensation.
D. Evaporation.
9 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 point
D. Lowering temperature only
10 Amorphous solids
A. Have sharp melting point
B. Undergo clean cleavage when cut with knife
C. Have perfect arrangement of atoms
D. Can possesses small regions of orderly arrangement of atoms

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