Surface Chemistry NEET Questions 2024

Created by

chemistryacademy

Surface Chemistry NEET Practice Questions

1 / 24

Which one of the following statements is incorrect about enzyme catalysis?

(b) Enzyme action is specific.

(a) Enzymes are mostly proteins in nature.

(d) Enzymes are least reactive at optimum temperature

2 / 24

In Freundlich adsorption isotherm, the value of 1/n is

(d) 1 in case of chemisorption.

(b) between 2 and 4 in all cases

(a) between 0 and 1 in all cases

3 / 24

The Measuring zeta potential is useful in determining which property of colloidal solution?

(d) Size of the colloidal particles

(a) Viscosity

(b) Solubility

4 / 24

On which of the following properties does the coagulating power of an ion depend?

(d) The sign of the charge on the ion alone

(a) The magnitude of the charge on the ion alone

(b) Size of the ion alone

5 / 24

At the critical micelle concentration (CMC) the surfactant molecules

(d) become completely soluble

(a) associate

(b) dissociate

6 / 24

According to the adsorption theory of catalysis, the speed of the reaction increases because

(d) adsorption lowers the activation energy of the reaction.

(b) in the process of adsorption, the activation energy of the molecules becomes large

(a) the concentration of reactant molecules at the active centers of the catalyst becomes high due to adsorption

7 / 24

The enzyme which hydrolyzes triglycerides to fatty acids and glycerol is called

(d) pepsin

(a) maltase

(b) lipase

8 / 24

Which mixture of the solutions will lead to the formation of negatively charged colloidal [AgI]I^– sol ?

(a) 50 mL of 0.1 M AgNO₃ + 50 mL of 0.1 M KI

(b) 50 mL of 1 M AgNO₃ + 50 mL of 1.5 M KI

(d) 50 mL of 2 M AgNO₃ + 50 mL of 1.5 M KI

9 / 24

Which one of the following methods is commonly used method for the destruction of colloids?

(b) Condensation

(d) By adding electrolyte

(a) Dialysis

10 / 24

Position of non-polar and polar part in micelle

(b) polar at inner surface non-polar at outer surface

(a) polar at outer surface but non-polar at inner surface

(d) are present in the surface only

11 / 24

If x is the amount of adsorbent and m is the amount of adsorbent, which of the following relations is not related to the adsorption process?

(d) xm= p ×T

(b) x/m = f (T) at constant p

(a) x/m = f (p) at constant T

12 / 24

A colloidal system has particles of which of the following size?

(a) 10^–9 m to 10^–12 m

(b) 10^–6 m to 10^–9 m

(d) 10^–5 m to 10^–7 m

13 / 24

Which one of the following statements is not correct?

(d) Catalyst does not initiate any reaction.

(b) Enzymes catalyze mainly biochemical reactions.

(a) The value of the equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium.

14 / 24

Fog is a colloidal solution of

(a) solid in gas

(d) gas in a liquid.

(b) gas in gas

15 / 24

Which property of the colloidal solution is independent of charge on the colloidal particles?

(d) Electrophoresis

(b) Tyndall effect

(a) Electroosmosis

16 / 24

Which one of the following statements is incorrect about enzyme catalysis?

(b) Enzyme action is specific.

(a) Enzymes are mostly proteins in nature.

(d) Enzymes are least reactive at optimum temperature

17 / 24

Which one of the following forms micelles in an aqueous solution above a certain concentration?

(d) Pyridinium chloride

(b) Glucose

(a) Dodecyl trimethyl ammonium chloride

18 / 24

Which one of the following is an example of adsorption?

silica gel in contact with water vapors

anhydrous CaCl2 with water

Ammonia in contact with water

all of these

19 / 24

Which one of the following characteristics is associated with adsorption?

(d) DG, DH, and DS all are negative.

(a) DG and DH are negative, but DS is positive.

(b) DG and DS are negative, but DH is positive.

20 / 24

Which is not correct regarding the adsorption of a gas on the surface of a solid?

(d) It is a reversible reaction

(b) Enthalpy and entropy change is negative.

(a) On increasing temperature adsorption increases continuously.

21 / 24

The Langmuir adsorption isotherm is deduced using the assumption

(d) The adsorption takes place in multilayers.

(a) the adsorption sites are equivalent in their ability to adsorb the particles

(b) the heat of adsorption varies with coverage

22 / 24

A colloidal system has particles of which of the following size?

(d) 10^–5 m to 10^–7 m

(b) 10^–6 m to 10^–9 m

(a) 10^–9 m to 10^–12 m

23 / 24

The protecting power of lyophilic colloidal sol is expressed in terms of

(b) gold number

(a) coagulation value

(d) oxidation number

24 / 24

A plot of log(x/m) versus log P for the adsorption of a gas to a solid gives a straight line with a slope equal to

(a) log k

(d) 1/n

(b) –log k

Your score is

The average score is 82%

Surface Chemistry Questions for NEET

Class XI Chemistry Questions

Just click To solve these chemistry practice questions. passing Marks are 50%

Some Basic Concepts of Chemistry

Structure of Atom

Classification of Elements

Chemical Bonding

States of Matter

Thermodynamics

Equilibrium

Redox Reactions

Hydrogen

Hydrocarbons

S- Block Elements

Environmental Chemistry

The p – Block Elements

Some Basic Principles and Techniques

Class XII Chemistry Questions

Just click To solve these chemistry practice questions. passing Marks are 50%

The Solid State

Solutions

Chemical Kinetics

Surface Chemistry

General Principles and Processes of Isolation of Elements

The p – Block Elements

Haloalkanes and Haloarenes

Alcohols, Phenols and Ethers

The d – and f – Block Elements

Aldehydes, Ketones

Coordination Compounds

Carboxylic Acids

Amines

Polymers

Biomolecules

Chemistry in Everyday Life

chemistry Quiz by EXPERTS

About Us

Pages

Help

Social Media