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

Question # 2

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

Question # 3

Which of the following is a pseudo solid

Question # 4

Chloroform and acetone are soluble in each other due to

Question # 5

In a group on going downward, polarizability generally:

Question # 6

Force of attraction between atoms of He is

Question # 7

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

Question # 8

The gases can be converted into liquids by

Question # 9

Which one of the following is the weakest intermolecular force

Question # 10

London dispersion forces are also called:

Question # 11

Polypeptide chains are coiled about one another into a spiral by

Question # 12

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

Question # 13

Rate of evaporation and rate of condensation at equilibrium

Question # 14

Which of the following is a pseudo solid?

Question # 15

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

Question # 16

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

Question # 17

Diamond is a bad conductor because:

Question # 18

Force of attraction b/w atoms of He is :

Question # 19

The molecules of CO2 in dry ice from the :

Question # 20

The intermolecular forces in liquids are

Question # 21

Amorphous solids

Question # 22

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

Question # 23

London dispersion forces are also called

Question # 24

Hydrocarbon molecule with large chain lengths experience:

Question # 25

A liquid on evaporation causes:

Question # 26

London dispersion forces are alos called:

Question # 27

HF has exceptionally low acidic strength due to:

Question # 28

A liquid on evaporation causes

Question # 29

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

Question # 30

Rate of evaporation and rate of condensation at equilibrium:

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 London dispersion forces are also called:
A. Hydrogen bonding.
B. Debye forces
C. Van der Waal's forces
D. Instantaneous dipole-induced dipole forces.
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 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
5 Polypeptide chains are coiled about one another into a spiral by
A. Ionic bonds
B. Covalent bonds
C. Van der Waal's forces
D. Hydrogen bonds
6 Which of the following is a pseudo solid
A. CaF2
B. Glass
C. NaCl
D. All
7 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
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 Which of the following liquids has low vapour pressure at 25°C:
A. Diethyl ether
B. Acetone.
C. Water.
D. Ethyl alcohol.
10 Force of attraction between atoms of He is
A. London dispersion forces
B. Hydrogen bondign
C. Coordinate covalent bond
D. Covalent bond

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