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

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

Question # 2

The strongest forces are:

Question # 3

The intermolecular forces in liquids are

Question # 4

London dispersion forces are also called

Question # 5

Force of attraction between atoms of He is

Question # 6

Hydrogen bonding is present in one of the following pairs:

Question # 7

Ionic solids are characterized by :

Question # 8

London dispersion forces are alos called:

Question # 9

Amorphous solids

Question # 10

Debye forces are present in on of the following pairs:

Question # 11

Diamond is a bad conductor because:

Question # 12

Polypeptide chains are coiled about one another into a spiral by

Question # 13

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

Question # 14

Which of the following is a pseudo solid?

Question # 15

Diamond is a bad conductor because

Question # 16

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

Question # 17

A liquid on evaporation causes

Question # 18

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

Question # 19

London dispersion forces are also called:

Question # 20

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

Question # 21

The strongest forces are

Question # 22

Rate of evaporation and rate of condensation at equilibrium

Question # 23

The molecules of CO2 in dry ice from the :

Question # 24

The inter-molecular forces in liquids are:

Question # 25

Hydrocarbon molecule with large chain lengths experience:

Question # 26

The gases can be converted into liquids by

Question # 27

Which one of the following is weakest inter molecular force?

Question # 28

Evaporation of water is possible at:

Question # 29

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

Question # 30

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

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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 In a group on going downward, polarizability generally
A. Decreases
B. Increases
C. Remains constant
D. Negligible
3 In a group on going downward, polarizability generally:
A. Decreases
B. Increases
C. Remain constant
D. Negligible
4 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
5 H2S is a gas while H2O is a liquid at room temperature. It is due to:
A. Less inter-molecular forces in water.
B. Covalent bonding H-O in water molecule.
C. Hydrogen bonding in water molecules
D. Ionic character in water molecules
6 The molecules of CO2 in dry ice from the :
A. Ionic crystals
B. Coverlet crystals
C. Molecular crystals
D. Any type of crystals
7 Chloroform and acetone are soluble in each other due to
A. Instantaneous dipole interactions
B. Dipole-dipole interactions
C. Intermolecular hydrogen bonding
D. All of above
8 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
9 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
10 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

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