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

Hydrocarbon molecules with large chain lengths experience

Question # 2

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

Question # 3

Which one of the following is the weakest intermolecular force

Question # 4

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

Question # 5

Hydrogen bonding is present in one of the following pairs:

Question # 6

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

Question # 7

Hydrogen bonding is present between the molecules of

Question # 8

Diamond is a bad conductor because:

Question # 9

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

Question # 10

Ionic Solids are characterized by

Question # 11

Which of the following is a pseudo solid

Question # 12

The strongest forces are:

Question # 13

Hydrocarbon molecule with large chain lengths experience:

Question # 14

]Which of the following is a pseudo solid?

Question # 15

In a group on going downward, polarizability generally

Question # 16

A liquid on evaporation causes:

Question # 17

The molecules of CO2in dry ice from the

Question # 18

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

Question # 19

Debye forces are present in one of the following pairs

Question # 20

Rate of evaporation and rate of condensation at equilibrium

Question # 21

HF has exceptionally low acidic strengths due to

Question # 22

Amorphous solids:

Question # 23

The only forces are London dispersion forces among the

Question # 24

The molecules of CO2 in dry ice from the :

Question # 25

The gases can be converted into liquids by

Question # 26

Evaporation of water is possible at:

Question # 27

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

Question # 28

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

Question # 29

A liquid on evaporation causes

Question # 30

At sea level and at 1000C the vapour pressure of water in an open system is

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ECAT Chemistry Chapter 4 Important MCQ's

Sr.# Question Answer
1 Escape of high energy molecules from the surface of liquid is called:
A. Sublimation.
B. Distillation.
C. Condensation.
D. Evaporation.
2 London dispersion forces are also called
A. Hydrogen bonding
B. Debye forces
C. Van de Waal's forces
D. Instantaneous dipole-induced dipole forces
3 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
4 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
5 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
6 Hydrogen bonding is present between the molecules of
A. NH3
B. H2O
C. HF
D. All of above
7 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
8 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
9 Which one of the following is weakest inter molecular force?
A. Dipole induced dipole forces
B. Ionic dipole forces
C. Electrostatic forces b/w ions
D. Dipole dipole forces
10 Which of the following is a pseudo solid
A. CaF2
B. Glass
C. NaCl
D. All

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