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

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

Question # 2

Chloroform and acetone are soluble in each other due to:

Question # 3

Which of the following is a pseudo solid?

Question # 4

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

Question # 5

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

Question # 6

Ionic solids are characterized by :

Question # 7

Which one of the following is the weakest intermolecular force

Question # 8

A liquid on evaporation causes

Question # 9

London dispersion forces are alos called:

Question # 10

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

Question # 11

Amorphous solids:

Question # 12

Evaporation of water is possible at:

Question # 13

Which of the following is a pseudo solid

Question # 14

In a group on going downward, polarizability generally

Question # 15

Hydrogen bonding is present between the molecules of

Question # 16

London dispersion forces are also called:

Question # 17

Rate of evaporation and rate of condensation at equilibrium

Question # 18

Ionic Solids are characterized by

Question # 19

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

Question # 20

Polypeptide chains are coiled about one another into a spiral by

Question # 21

Diamond is a bad conductor because:

Question # 22

Which one of the following is weakest inter molecular force?

Question # 23

Chloroform and acetone are soluble in each other due to

Question # 24

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

Question # 25

Force of attraction between atoms of He is

Question # 26

HF has exceptionally low acidic strengths due to

Question # 27

Rate of evaporation and rate of condensation at equilibrium:

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 The strongest forces are:
A. Debye froces
B. London dispersion
C. Dipole-dipole attraction
D. Hydrogen bonding
2 Hydrogen bonding is present between the molecules of
A. NH3
B. H2O
C. HF
D. All of above
3 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
4 The intermolecular forces in liquids are
A. Negligible
B. Very weak
C. Very strong
D. Reasonably strong
5 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
6 Which of the following liquids has low vapour pressure at 25°C:
A. Diethyl ether
B. Acetone.
C. Water.
D. Ethyl alcohol.
7 Force of attraction between atoms of He is
A. London dispersion forces
B. Hydrogen bondign
C. Coordinate covalent bond
D. Covalent bond
8 Which of the following liquids has low vapour pressure at 250C
A. Diethyl ether
B. Acetone
C. Water
D. Ethyl alochol
9 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
10 The molecules of CO2in dry ice from the
A. Ionic crystalls
B. Covalent crystals
C. Molecular crystals
D. Any type of crystal

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