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

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

Question # 2

Chloroform and acetone are soluble in each other due to

Question # 3

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

Question # 4

Rate of evaporation and rate of condensation at equilibrium:

Question # 5

Hydrogen bonding is present in one of the following pairs:

Question # 6

In a group on going downward, polarizability generally

Question # 7

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

Question # 8

Amorphous solids:

Question # 9

Which one of the following is the weakest intermolecular force

Question # 10

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

Question # 11

Which of the following is a pseudo solid?

Question # 12

Hydrogen bonding is present between the molecules of

Question # 13

The intermolecular forces in liquids are

Question # 14

HF has exceptionally low acidic strength due to:

Question # 15

Polypeptide chains are coiled about one another into a spiral by

Question # 16

A liquid on evaporation causes

Question # 17

In a group on going downward, polarizability generally:

Question # 18

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

Question # 19

The only forces are London dispersion forces among the

Question # 20

London dispersion forces are alos called:

Question # 21

London dispersion forces are also called:

Question # 22

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

Question # 23

The density of water decreases, when it is freezed at 0oC because of

Question # 24

Evaporation of water is possible at:

Question # 25

The strongest forces are

Question # 26

London dispersion forces are also called

Question # 27

Rate of evaporation and rate of condensation at equilibrium

Question # 28

Diamond is a bad conductor because

Question # 29

The molecules of CO2 in dry ice from the :

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 Debye forces are present in one of the following pairs
A. Na+ion and water
B. Argon and water
C. Argon and Na+ion
D. Ne and Water
2 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
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 point
D. Lowering temperature only
4 The molecules of CO2 in dry ice from the :
A. Ionic crystals
B. Coverlet crystals
C. Molecular crystals
D. Any type of crystals
5 Escape of high energy molecules from the surface of liquid is called:
A. Sublimation.
B. Distillation.
C. Condensation.
D. Evaporation.
6 Which of the following liquids has low vapour pressure at 250C
A. Diethyl ether
B. Acetone
C. Water
D. Ethyl alochol
7 Which one of the following is weakest inter molecular force?
A. Dipole induced dipole forces
B. Ionic dipole forces
C. Electrostatic forces b/w ions
D. Dipole dipole forces
8 Diamond is a bad conductor because:
A. Ithas tight structure
B. It has a high density
C. There is no free electron present in the crystal of diamond of conduct electricity is transparent to light
9 A liquid on evaporation causes:
A. Heating effect.
B. Cooling effect.
C. Suffocation .
D. All of above
10 Heat of vapourization for liquids with strong dipole-dipole forces will have
A. Negligible Values
B. Reasonably high values
C. Very high values
D. very low values

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