Solid State Test

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Solid State Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

The hcp and ccp structure for a given element will have

A
The same fraction of unoccupied space

B
The same density

C
All the above

D
The same coordination number

Solution

The hcp and ccp structure for a given element will have the same density, same fraction of unoccupied space and the same coordination number.
Question 2
1 / -0

Which of the following properties of a liquid are dependent on intermolecular forces?

A
Boiling point

B
Heat of vaporization

C
Surface tension

D
Vapour density

Solution

Vapour density doesn't dependent on intermolecular forces.
Question 3
1 / -0

Choose the correct statements

A
The forces involved in interfacial tension and surface tension are of the same type

B
When two immiscible liquids are present one above the other in a vessel, the force acting per unit length along the interface is called interfacial tension.

C
None of the above is correct

D
The value of interfacial tension is less than the surface tension of the liquid with a higher value

Solution

The value of interfacial tension is less than the value of surface tension of the liquid with higher value because the unbalanced forces acting along the surface of each liquid are partly compensate by the force of mutual attraction between the molecules of two liquids.

Though the same type of forces are involved in both cases but in case of surface tension of a liquid, the force acts along the surface of separation between the liquid and its vapour where as in case of interfacial tension, the force acts along the surface of separation of two liquids.
Question 4
1 / -0

The addition of detergent to water results in

A
Increases in surface tension of water

B
Increase in viscosity of water

C
Decrease in viscosity of water

D
Decrease in surface tension of water

Solution

On adding detergent to a liquid, ther occurs a decrease in surface tension and an increase in viscosity.
Question 5
1 / -0

Which of the following liquids has the highest viscosity?

A
Carbon disulphide

B
Ethanol

C
Benzene

D
Acetone

Solution

Intermolecular H-bondin exists in ethanol unlike other liquids, hence it has strongest intermolecular attractions and highest viscosity.
Question 6
1 / -0

Select the covalent crystal(s)

A
Graphite

B
Zinc sulphide

C
Diamond

D
Silver iodide

Solution

Diamond and graphite are covalent crystals.

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Re-Attempt Weekly Quiz Competition

Solid State Test - 4

Result

Solid State Test - 4

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SHARING IS CARING

Question 1

The same fraction of unoccupied space

The same density

All the above

The same coordination number

Solution

Question 2

Boiling point

Heat of vaporization

Surface tension

Vapour density

Solution

Question 3

The forces involved in interfacial tension and surface tension are of the same type

When two immiscible liquids are present one above the other in a vessel, the force acting per unit length along the interface is called interfacial tension.

None of the above is correct

The value of interfacial tension is less than the surface tension of the liquid with a higher value

Solution

Question 4

Increases in surface tension of water

Increase in viscosity of water

Decrease in viscosity of water

Decrease in surface tension of water

Solution

Question 5

Carbon disulphide

Ethanol

Benzene

Acetone

Solution

Question 6

Graphite

Zinc sulphide

Diamond

Silver iodide

Solution

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