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 1000C the vapour pressure of water in an open system is

Question # 2

Polypeptide chains are coiled about one another into a spiral by

Question # 3

Which one of the following is the weakest intermolecular force

Question # 4

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

Question # 5

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

Question # 6

Ionic solids are characterized by :

Question # 7

Diamond is a bad conductor because:

Question # 8

London dispersion forces are alos called:

Question # 9

Which of the following is a pseudo solid

Question # 10

The gases can be converted into liquids by

Question # 11

The only forces are London dispersion forces among the

Question # 12

Force of attraction between atoms of He is

Question # 13

London dispersion forces are also called:

Question # 14

The molecules of CO2 in dry ice from the :

Question # 15

]Which of the following is a pseudo solid?

Question # 16

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

Question # 17

Chloroform and acetone are soluble in each other due to

Question # 18

Rate of evaporation and rate of condensation at equilibrium

Question # 19

Ionic Solids are characterized by

Question # 20

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

Question # 21

Hydrogen bonding is present between the molecules of

Question # 22

A liquid on evaporation causes:

Question # 23

Hydrocarbon molecule with large chain lengths experience:

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

In a group on going downward, polarizability generally

Question # 29

Chloroform and acetone are soluble in each other due to:

Question # 30

Diamond is a bad conductor because

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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. Intermolecular hydrogen bonding
D. All of above
2 In a group on going downward, polarizability generally:
A. Decreases
B. Increases
C. Remain constant
D. Negligible
3 Escape of high energy molecules from the surface of liquid is called:
A. Sublimation.
B. Distillation.
C. Condensation.
D. Evaporation.
4 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
5 In a group on going downward, polarizability generally
A. Decreases
B. Increases
C. Remains constant
D. Negligible
6 Amorphous solids:
A. Have a sharp melting point
B. Undergo clean cleavage when cut with knife
C. Have a perfect arrangement of atoms
D. Can possesses small regions of orderly arrangement of atoms
7 The strongest forces are:
A. Debye froces
B. London dispersion
C. Dipole-dipole attraction
D. Hydrogen bonding
8 Force of attraction between atoms of He is
A. London dispersion forces
B. Hydrogen bondign
C. Coordinate covalent bond
D. Covalent bond
9 Debye forces are present in on of the following pairs:
A. Na+ion and water
B. Argon and water
C. Argon and Na+ion
D. Ne and water
10 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

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