Surface Chemistry Test

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Surface Chemistry Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

Whipped cream is an example of

A
Lyophilic sol

B
Suspension

C
Suspension

D
Foam

Solution

Whipped cream is example of foam. It is formed by combination of gas (dispersed phase) and liquid (dispersion medium).
Question 2
1 / -0

Which among the following substances is an example of multimolecular colloids?

A
Starch sol

B
Sulphur sol

C
Micelles

D
Polystyrene

Solution

Multimolecular colloids are formed when a large number of atoms or molecules of a substance aggregate together to form species having size in colloidal range. sulphur sol contains a thousand of S₈ molecules.
Question 3
1 / -0

Which among the following is not the method of colloidal purification?

A
Ultrafilteration

B
Dialysis

C
Electrical disintegration

D
Electro dialysis

Solution

Electrical Disintegration is not a method of colloidal purification. It is used for preparing colloidal solutions.
Question 4
1 / -0

Tyndall effect in colloidal solution is due to

A
Adsorption of light

B
Reflection of light

C
Presence of electrically charged particles

D
Scattering of light

Solution

Tyndall effect is defined as scattering of light by colloidal particles.
Question 5
1 / -0

Adsorption isobar is a curve showing variation of adsorption

A
With volume at constant pressure

B
With volume at constant temperature

C
With pressure at constant temperature

D
With temperature at constant pressure

Solution

Isobar means when pressure is constant.
Question 6
1 / -0

The curve showing the variation of adsorption with pressure at constant temperature is known as

A
Adsorption isobar

B
Adsorption Isoelectronic graph

C
Adsorption isotherm

D
Adsorption isochors

Solution

Constant Temperature means isotherm.
Question 7
1 / -0

Which physical quantity remain unaffected when a reversible reaction is carried out in presence of a catalyst?

A
Equilibrium constant

B
Pressure

C
Temperature

D
Entropy

Solution

Equillibrium constant is independent of catalyst. Catalyst does not change equilibrium constant.
Question 8
1 / -0

Which of the following statement is true about Langmuir’s adsorption?

A
It has a reversible temperature

B
It forms a monolayer

C
It is not specific in nature

D
It occurs at low temperature

Solution

Langmuir isotherm assume monolayer formation only.

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Re-Attempt Weekly Quiz Competition

Surface Chemistry Test - 5

Result

Surface Chemistry Test - 5

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SHARING IS CARING

Question 1

Lyophilic sol

Suspension

Suspension

Foam

Solution

Question 2

Starch sol

Sulphur sol

Micelles

Polystyrene

Solution

Question 3

Ultrafilteration

Dialysis

Electrical disintegration

Electro dialysis

Solution

Question 4

Adsorption of light

Reflection of light

Presence of electrically charged particles

Scattering of light

Solution

Question 5

With volume at constant pressure

With volume at constant temperature

With pressure at constant temperature

With temperature at constant pressure

Solution

Question 6

Adsorption isobar

Adsorption Isoelectronic graph

Adsorption isotherm

Adsorption isochors

Solution

Question 7

Equilibrium constant

Pressure

Temperature

Entropy

Solution

Question 8

It has a reversible temperature

It forms a monolayer

It is not specific in nature

It occurs at low temperature

Solution

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