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 molecules of CO2 in dry ice from the :

Question # 2

]Which of the following is a pseudo solid?

Question # 3

Force of attraction b/w atoms of He is :

Question # 4

Amorphous solids:

Question # 5

Polypeptide chains are coiled about one another into a spiral by

Question # 6

Debye forces are present in on of the following pairs:

Question # 7

Chloroform and acetone are soluble in each other due to

Question # 8

The gases can be converted into liquids by

Question # 9

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

Question # 10

Rate of evaporation and rate of condensation at equilibrium

Question # 11

Rate of evaporation and rate of condensation at equilibrium:

Question # 12

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

Question # 13

Ionic solids are characterized by :

Question # 14

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

Question # 15

Diamond is a bad conductor because:

Question # 16

A liquid on evaporation causes

Question # 17

Debye forces are present in one of the following pairs

Question # 18

Force of attraction between atoms of He is

Question # 19

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

Question # 20

The molecules of CO2in dry ice from the

Question # 21

Which one of the following is the weakest intermolecular force

Question # 22

Ionic Solids are characterized by

Question # 23

Which of the following is a pseudo solid

Question # 24

Amorphous solids

Question # 25

London dispersion forces are also called

Question # 26

Which one of the following is weakest inter molecular force?

Question # 27

The only forces are London dispersion forces among the

Question # 28

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

Question # 29

Which of the following is a pseudo solid?

Question # 30

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

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 Chloroform and acetone are soluble in each other due to:
A. Instantaneous dipole interactions.
B. Dipole-dipole interactions.
C. Inter molecular hydrogen bonding.
D. All of above
2 Evaporation of water is possible at
A. Above 1000
B. 00
C. 1000
D. At all temperature
3 Ionic solids are characterized by :
A. Low meeting points
B. Good conductivity in solid state
C. High vapor pressure
D. Solubility in polar solvents
4 The density of water decreases, When it is freezed at 0°C
A. Change of bond length
B. Change of bond angles
C. Cubic structure of ice
D. Empty spaces present in the structure of ice
5 Evaporation of water is possible at:
A. Above 100°C
B. 0°C
C. 100°C
D. At all temperature
6 Hydrocarbon molecule with large chain lengths experience:
A. Weaker attractive forces
B. Stronger attractive forces
C. Repulsive forces
D. No attractive forces
7 In a group on going downward, polarizability generally
A. Decreases
B. Increases
C. Remains constant
D. Negligible
8 In a group on going downward, polarizability generally:
A. Decreases
B. Increases
C. Remain constant
D. Negligible
9 HF has exceptionally low acidic strengths due to
A. Smaller size of fluorine
B. Strong polar bond between H and F
C. Electronegativity of fluorine
D. Strong hydrogen bonding
10 The boiling point of NH3is maximum among the hydrides of group V elements due to
A. Enhanced electronegative character of Nitrogen
B. Pyramidal structure of NH3
C. Very small size of Nitrogen
D. Enhanced electropositive character of Nitrogen

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