NEET Chemistry Surface Chemistry Questions Solved


Which acts as inhibitor for knocking in combustion of petrol?

(a) (C2H5)4Pb                     (b) Ni(CO)4

(c) both (a) and (b)              (d) none of these

Concept Videos :-

#7 | Catalyst

Concept Questions :-

(c) Both are antiknock compounds.

Difficulty Level:

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Which does not show Tyndall effect?

(a) Emulsion

(b)Blood

(c)milk

(d)sugar solution

Concept Videos :-

#2 | Colloidal Solution
#4 | Properties of Colloidal Solution (incl. Hardy Shulze Rule)
#5 | Application of Colloidal Solutions (incl. Gold No.)
#10 | Development of Charge in Colloidal Sols
#11 | Types of Colloidal Solutions

Concept Questions :-

Colloidal Solution

(d) sugar solution does not shows Tyndall effect. Rest all the options shows this effect.

Difficulty Level:

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Among the following surfactant molecules, the surfactant that forms micelles in aqueous solution at the lower CMC at ambient condition is:

(a) CH3CH215N+CH33Br-

(b) CH3CH211OSO3-Na+

(c) CH3CH26COO-Na+

(d) CH3CH211N+CH33Br-

Concept Videos :-

#6 | Emulsion

Concept Questions :-

(a) More is the hydrophobic character in surfactant molecule lesser is CMC in aqueous solution.

Difficulty Level:

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Butter is a colloid form in which:

(a) fat is dispersed in solid casein

(b) fat globules are dispersed in water

(c) water is dispersed in fat

(d) suspension of casein is in water

Concept Videos :-

#2 | Colloidal Solution
#4 | Properties of Colloidal Solution (incl. Hardy Shulze Rule)
#5 | Application of Colloidal Solutions (incl. Gold No.)
#10 | Development of Charge in Colloidal Sols
#11 | Types of Colloidal Solutions

Concept Questions :-

Colloidal Solution

(c) Butter is an w/o emulsion having fat dispersed in water.

Difficulty Level:

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The cotterells precipitator is used to :

(a) neutralize charge on carbon particles in air in smoke

(b) coagulate carbon atoms of smoke

(c) bring in cataphoresis in carbon particles

(d) all of the above

Concept Videos :-

#2 | Colloidal Solution
#4 | Properties of Colloidal Solution (incl. Hardy Shulze Rule)
#5 | Application of Colloidal Solutions (incl. Gold No.)
#10 | Development of Charge in Colloidal Sols
#11 | Types of Colloidal Solutions

Concept Questions :-

Colloidal Solution

(d) The negatively charged carbon particles in air (smoke) are moved towards anode due to cataphoresis, where they are neutralized to left free air. The process is used to control air pollution.

Difficulty Level:

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Foam is a colloidal solution of:

(a) gaseous particles dispersed in gas                (c) solid particles dispersed in a liquid

(b) gaseous particles dispersed in a liquid           (d) solid particles dispersed in gas

Concept Videos :-

#2 | Colloidal Solution
#4 | Properties of Colloidal Solution (incl. Hardy Shulze Rule)
#5 | Application of Colloidal Solutions (incl. Gold No.)
#10 | Development of Charge in Colloidal Sols
#11 | Types of Colloidal Solutions

Concept Questions :-

Colloidal Solution

(b) Foam is a colloidal state of gas dispersed in liquid (froths) or in solid, i.e., solid foam (mattresses).

Difficulty Level:

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A liquid aerosol is a colloidal system of:

(a)a liquid dispersed in a solid

(b)a liquid dispersed in a gas

(c)a gas dispersed in a liquid

(d) a solid dispersed in a gas

Concept Videos :-

#2 | Colloidal Solution
#4 | Properties of Colloidal Solution (incl. Hardy Shulze Rule)
#5 | Application of Colloidal Solutions (incl. Gold No.)
#10 | Development of Charge in Colloidal Sols
#11 | Types of Colloidal Solutions

Concept Questions :-

Colloidal Solution

(b) Liquid aerosol involves liquid dispersed in gas, e.g., cloud, fog , mist, etc.

Difficulty Level:

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Negative catalyst or inhibitor is one:

(a) which retards the rate of reaction

(b) takes the reaction in forward direction

(c) promotes the side reaction

(d) none of the above

Concept Videos :-

#7 | Catalyst

Concept Questions :-

(a) The definition of negative catalyst.

Difficulty Level:

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Alum helps in purifying water by:

(a) forming Si complex with clay particles

(b) sulphate part which combines with the dirt and removes it

(c) aluminium which coagulates the mud particles

(d) making mud water soluble

Concept Videos :-

#2 | Colloidal Solution
#4 | Properties of Colloidal Solution (incl. Hardy Shulze Rule)
#5 | Application of Colloidal Solutions (incl. Gold No.)
#10 | Development of Charge in Colloidal Sols
#11 | Types of Colloidal Solutions

Concept Questions :-

Colloidal Solution

(c) Al3+ is very good coagulating agent for -ve sol (muddy water).

Difficulty Level:

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Which of the following does not form anionic micelle?

(a) C12H25COONa                    (b) C12H25SO4Na

(c) C12H25SO3Na                     (d) C12H25(NH3)3Cl

Concept Videos :-

#6 | Emulsion

Concept Questions :-

(d) In a, b, c anionic micelle is formed.

Difficulty Level:

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  • 65%
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