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

HF has exceptionally low acidic strength due to:

Question # 2

London dispersion forces are also called:

Question # 3

Force of attraction between atoms of He is

Question # 4

]Which of the following is a pseudo solid?

Question # 5

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

Question # 6

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

Question # 7

Amorphous solids

Question # 8

The strongest forces are:

Question # 9

Hydrocarbon molecules with large chain lengths experience

Question # 10

Force of attraction b/w atoms of He is :

Question # 11

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

Question # 12

London dispersion forces are alos called:

Question # 13

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

Question # 14

Which one of the following is the weakest intermolecular force

Question # 15

Ionic solids are characterized by :

Question # 16

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

Question # 17

Hydrogen bonding is present in one of the following pairs:

Question # 18

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

Question # 19

In a group on going downward, polarizability generally:

Question # 20

The intermolecular forces in liquids are

Question # 21

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

Question # 22

Debye forces are present in one of the following pairs

Question # 23

The molecules of CO2 in dry ice from the :

Question # 24

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

Question # 25

Hydrogen bonding is present between the molecules of

Question # 26

Rate of evaporation and rate of condensation at equilibrium

Question # 27

The strongest forces are

Question # 28

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

Question # 29

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

Question # 30

The inter-molecular forces in liquids are:

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 Hydrogen bonding is present in one of the following pairs:
A. NH3
B. H2O
C. HF
D. All of above
2 Escape of high energy molecules from the surface of a liquid is called
A. Sublimation
B. Distillation
C. Condensation
D. Evaporation
3 The inter-molecular forces in liquids are:
A. Negligible
B. Very weak
C. Very strong
D. Reasonably strong
4 Which one of the following is the weakest intermolecular force
A. Dipole induced dipole forces
B. Ionic dipole forces
C. Electrostatics forces between ions
D. Dipole-dipole forces
5 The intermolecular forces in liquids are
A. Negligible
B. Very weak
C. Very strong
D. Reasonably strong
6 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
7 Force of attraction b/w atoms of He is :
A. London dispersion forces
B. Hydrogen bonding
C. Coordinate covalent bond
D. Covalent bond
8 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
9 A liquid on evaporation causes
A. Heating effect
B. Cooling effect
C. Suffication
D. All of above
10 Which of the following liquids has low vapour pressure at 25°C:
A. Diethyl ether
B. Acetone.
C. Water.
D. Ethyl alcohol.

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