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

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

Question # 2

In a group on going downward, polarizability generally

Question # 3

Which one of the following is the weakest intermolecular force

Question # 4

Force of attraction b/w atoms of He is :

Question # 5

London dispersion forces are also called

Question # 6

Force of attraction between atoms of He is

Question # 7

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

Question # 8

HF has exceptionally low acidic strengths due to

Question # 9

Diamond is a bad conductor because:

Question # 10

Debye forces are present in on of the following pairs:

Question # 11

The gases can be converted into liquids by

Question # 12

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

Question # 13

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

Question # 14

The strongest forces are:

Question # 15

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

Question # 16

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

Question # 17

In a group on going downward, polarizability generally:

Question # 18

Hydrogen bonding is present in one of the following pairs:

Question # 19

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

Question # 20

Evaporation of water is possible at:

Question # 21

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

Question # 22

HF has exceptionally low acidic strength due to:

Question # 23

Hydrogen bonding is present between the molecules of

Question # 24

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

Question # 25

Ionic Solids are characterized by

Question # 26

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

Question # 27

Which of the following is a pseudo solid

Question # 28

The molecules of CO2in dry ice from the

Question # 29

Diamond is a bad conductor because

Question # 30

The only forces are London dispersion forces among the

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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 Which of the following liquids has low vapour pressure at 250C
A. Diethyl ether
B. Acetone
C. Water
D. Ethyl alochol
3 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
4 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
5 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
6 A liquid on evaporation causes
A. Heating effect
B. Cooling effect
C. Suffication
D. All of above
7 Trend of boiling point of halogens from fluorine to Iodine is that it
A. Decreases
B. Is negligible
C. Increases
D. Remains constant
8 ]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
9 H2S is a gas which H2O is liquid at room temperature. it is due to
A. Less intermolecular forces in water
B. Covalent bond in H-O in water molecule
C. Hydrogen bonding in water molecules
D. Ionic characters in water molecules
10 At sea level and at 100°C the vapor pressure of water in an open system is:
A. 1000 mm Hg
B. 760 mm Hg
C. 730 mm Hg
D. 670 mm Hg

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