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

The inter-molecular forces in liquids are:

Question # 2

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

Question # 3

Which one of the following is weakest inter molecular force?

Question # 4

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

Question # 5

A liquid on evaporation causes

Question # 6

The strongest forces are

Question # 7

Which one of the following is the weakest intermolecular force

Question # 8

Hydrogen bonding is present between the molecules of

Question # 9

London dispersion forces are also called

Question # 10

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

Question # 11

The only forces are London dispersion forces among the

Question # 12

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

Question # 13

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

Question # 14

The intermolecular forces in liquids are

Question # 15

Amorphous solids:

Question # 16

HF has exceptionally low acidic strengths due to

Question # 17

Rate of evaporation and rate of condensation at equilibrium

Question # 18

Evaporation of water is possible at

Question # 19

The gases can be converted into liquids by

Question # 20

The molecules of CO2in dry ice from the

Question # 21

Chloroform and acetone are soluble in each other due to

Question # 22

Hydrogen bonding is present in one of the following pairs:

Question # 23

Evaporation of water is possible at:

Question # 24

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

Question # 25

Debye forces are present in on of the following pairs:

Question # 26

Which of the following is a pseudo solid

Question # 27

Hydrocarbon molecule with large chain lengths experience:

Question # 28

Rate of evaporation and rate of condensation at equilibrium:

Question # 29

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

Question # 30

The boiling point of NH3 is maximum among the hydrides of group V elementsdue to:

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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. Remain constant
D. Negligible
2 Ionic solids are characterized by :
A. Low meeting points
B. Good conductivity in solid state
C. High vapor pressure
D. Solubility in polar solvents
3 The molecules of CO2 in dry ice from the :
A. Ionic crystals
B. Coverlet crystals
C. Molecular crystals
D. Any type of crystals
4 Hydrocarbon molecule with large chain lengths experience:
A. Weaker attractive forces
B. Stronger attractive forces
C. Repulsive forces
D. No attractive forces
5 Evaporation of water is possible at
A. Above 1000
B. 00
C. 1000
D. At all temperature
6 Diamond is a bad conductor because
A. It has a tight structure
B. It has a high density
C. there is no free electron present in the crystal of diamond of conduct electicity
D. Is transparent to light
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 The intermolecular forces in liquids are
A. Negligible
B. Very weak
C. Very strong
D. Reasonably strong
9 Which of the following liquids has low vapour pressure at 250C
A. Diethyl ether
B. Acetone
C. Water
D. Ethyl alochol
10 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.

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