Surface chemistry

Surface chemistry

12th Grade

5 Qs

quiz-placeholder

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Surface chemistry

Surface chemistry

Assessment

Quiz

Chemistry

12th Grade

Hard

Created by

Hari Darshan Tewari

FREE Resource

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Extent of adsorption of adsorbate from solution phase increases with……

increase in amount of adsorbate in solution

decrease in surface area of adsorbent

increase in temperature of solution

decrease in amount of adsorbate in solution

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In Freundlich adsorption isotherm x/m = Kp1/n, the value of ‘n’ at low pressure is

more than one.

less than one.

equal to one.

from zero to one.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

The concentration of the reactant molecules at the active centres of the catalyst becomes high due to adsorption.

in the process of adsorption, the activation energy of the molecules becomes large.

adsorption produces heat which increases the speed of the reaction

adsorption lowers the activation energy of the reaction.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which shape selective catalyst is used to convert alcohol to gasoline?

Trpsin

Calgon

ZSM-5

Zeigler-Natta catalyst

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a small amount of FeCl3 is added to a freshly precipitated Fe(OH)3, b reddish brown colloidal solution is obtained. This phenomenon is known as

dialysis

peptization

protection

dissolution