Surface Chemistry

This is an MCQ-based quiz on Surface Chemistry.

This includes Absorption, Adsorption, Sorption, Desorption, Emulsion, Aerosol, Gel, and Foam

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At CMC (Critical Micellisation Cone.) the surface molecules

associate dissociate decompose become completely soluble.

Movement of dispersion medium under the influence of electric field is known as

Electrodialysis

Electrophoresis

Electroosmosis

Cataphoresis.

Milk is an example of

Emulsion

Suspension

Foam

Sol

Tyndall effect is due to

Electric charge

Scattering of light

Absorption of light

None of these.

Volume of one mole of any gas at NTP is

11.2 litre 22.4 litre 10.2 litre 22.8 litre

Which of the following acts as the best coagulating agent for ferric hydroxide sol?

Potassium ferrocyanide Potassium chloride Potassium oxalate Aluminium chloride

Fog in an example of colloidal system of

Liquid in gas

Gas in liquid

Solid in gas

Gas in solid

Which one of the following is alyophilic colloid?

Milk Gum Fog Blood

Which of the following is not correct for enzyme catalysis?

The enzyme activity is maximum at optimum pH which is between 5-7 Each enzyme is specific for a given reaction The favourable temperature range of enzyme activity is between 25-37°C The enzymatic activity is increased in presence of certain substances.called co-enzymes

Presence of traces of arsenious oxide (As2O3) in the reacting gases SO2 and O3 in presence of plantinised asbestos in contact process acts as

Catalytic promoter

Catalytic poison

Dehydrating agent

Drying agent

Shape selective catalysis is a reaction catalysed by

Zeolite

Enzymes

Platinum

Ziegler-Natta catalyst

Which of the following can adsorb larger volume of hydrogen gas?

Finely divided platinum Colloidal solution of palladium Small pieces of palladium A single metal surface of platinum