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

Chloroform and acetone are soluble in each other due to:

Question # 2

The molecules of CO2 in dry ice from the :

Question # 3

A liquid on evaporation causes

Question # 4

The molecules of CO2in dry ice from the

Question # 5

In a group on going downward, polarizability generally:

Question # 6

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

Question # 7

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

Question # 8

Chloroform and acetone are soluble in each other due to

Question # 9

A liquid on evaporation causes:

Question # 10

Which one of the following is weakest inter molecular force?

Question # 11

Debye forces are present in one of the following pairs

Question # 12

HF has exceptionally low acidic strength due to:

Question # 13

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

Question # 14

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

Question # 15

Force of attraction b/w atoms of He is :

Question # 16

London dispersion forces are also called

Question # 17

Evaporation of water is possible at

Question # 18

Force of attraction between atoms of He is

Question # 19

Amorphous solids

Question # 20

The strongest forces are:

Question # 21

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

Question # 22

The gases can be converted into liquids by

Question # 23

Hydrocarbon molecule with large chain lengths experience:

Question # 24

HF has exceptionally low acidic strengths due to

Question # 25

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

Question # 26

Amorphous solids:

Question # 27

Hydrogen bonding is present in one of the following pairs:

Question # 28

Which one of the following is the weakest intermolecular force

Question # 29

In a group on going downward, polarizability generally

Question # 30

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

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Trend of boiling point of halogens from fluorine to Iodine is that it
A. Decreases
B. Is negligible
C. Increases
D. Remains constant
4 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
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 is a pseudo solid?

A. Atoms of He is gaseous stat at high temperate.
B. Molecules of water in liquid state.
C. Molecules of solid l2
D. Molecular of hydrochloric acid gas
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 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
9 At sea level and at 1000C the vapour pressure of water in an open system is
A. 1000 mm Hg
B. 760 mm Hg
C. 730 mm Hg
D. 670 mm Hg
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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