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JEE Exam  >  JEE Tests  >  Test: Surface Chemistry - 1 (Old NCERT) - JEE MCQ

Test: Surface Chemistry - 1 (Old NCERT) - JEE MCQ


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25 Questions MCQ Test - Test: Surface Chemistry - 1 (Old NCERT)

Test: Surface Chemistry - 1 (Old NCERT) for JEE 2024 is part of JEE preparation. The Test: Surface Chemistry - 1 (Old NCERT) questions and answers have been prepared according to the JEE exam syllabus.The Test: Surface Chemistry - 1 (Old NCERT) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Surface Chemistry - 1 (Old NCERT) below.
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Test: Surface Chemistry - 1 (Old NCERT) - Question 1
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Which among the following is a property of physisorption?

Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 1

In physisorption no chemical reaction, only physical interactions hence, not specific.

Test: Surface Chemistry - 1 (Old NCERT) - Question 2
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Powdered substances are more effective adsorbents than their crystalline forms because:

Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 2

Greater the surface area, greater will be the area available for adsorption.

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Test: Surface Chemistry - 1 (Old NCERT) - Question 3
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Which among the following is true for chemisorptions?

Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 3

As chemical reaction takes place in chemisorption, it cant be reversed.

Test: Surface Chemistry - 1 (Old NCERT) - Question 4
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In physical adsorption increases when:
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 4

adsorption is inversely proportional to the temperature. This is true for physical adsorption. In chemical adsorption due to the high energy of activation, the extent of adsorption increases initially and decreases as the temperature increases further.

Test: Surface Chemistry - 1 (Old NCERT) - Question 5
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In physisorption, adsorption is generally
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 5

Physiorption includes physical forces of attraction, hence, multilayered is possible.

Test: Surface Chemistry - 1 (Old NCERT) - Question 6
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The extent of adsorption increases with the ______.
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 6

More the surface area, more is available space for adsorption.

Test: Surface Chemistry - 1 (Old NCERT) - Question 7
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A biochemical catalyst is:
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 7

Enzymes are biological catalyst, they catalize different chemical reactions in body.

Test: Surface Chemistry - 1 (Old NCERT) - Question 8
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The number of phases in colloidal system are:
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 8
  • Colloidal system is a mixture of two substances, one of which, called the dispersed phase (or colloid), is uniformly distributed in a finely divided state through the second substance, called the dispersion medium (or dispersing medium).
  • So, here are 2 phases.
Test: Surface Chemistry - 1 (Old NCERT) - Question 9
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Which among the following is not the method of colloidal purification?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 9

Electrical Disintegration is not a method of colloidal purification.

Test: Surface Chemistry - 1 (Old NCERT) - Question 10
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Chromatography is based on the principle of
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 10

Physical force of attraction between watt man filter paper (stationary phase) and adsorbent (mobile phase).

Test: Surface Chemistry - 1 (Old NCERT) - Question 11
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Which among the following substances is an example of multimolecular colloids?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 11

Multimolecular colloids are formed when a large number of atoms or molecules of a substance aggregate together to form speices having size in colloidal range. sulphur sol contains a thousand of S8 molecules.

Test: Surface Chemistry - 1 (Old NCERT) - Question 12
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Tyndall effect in colloidal solution is due to:
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 12

Tyndall effect is defined as scattering of light by colloidal particles.

Test: Surface Chemistry - 1 (Old NCERT) - Question 13
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Adsorption isobar is a curve showing variation of adsorption ______.
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 13

Isobar means when pressure is constant.

Test: Surface Chemistry - 1 (Old NCERT) - Question 14
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Which step of enzyme catalysis mechanism is shown in figure?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 14

Substrate bind to specific site of enzyme known as active site to form a enzyme substrate complex.

Test: Surface Chemistry - 1 (Old NCERT) - Question 15
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Which of the following statement is true about Langmuir’s adsorption?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 15

Langmuir isotherm assume monolayer formation only.

Test: Surface Chemistry - 1 (Old NCERT) - Question 16
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When adsorption of oxalic acid is carried out on activated charcoal, then activated charcoal is known as
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 16

Surface on which adsorption occurs is known as adsorbent.

Test: Surface Chemistry - 1 (Old NCERT) - Question 17
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Which of the following metal solution cannot be prepared by Bredig’s arc method?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 17

Bredig's arc method is a method of preparation of the colidal solution of metals such as silver, gold, platinum etc. Copper sol is not prepared using Bredig's arc method.

Test: Surface Chemistry - 1 (Old NCERT) - Question 18
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The average molecular mass of colloidal can be determined by
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 18

Average molecular mass of colloidal solution is determined by Osmotic Pressure measurement.

Test: Surface Chemistry - 1 (Old NCERT) - Question 19
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Which of the following processes does not involve a catalyst?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 19

Thermite process doesn’t require a catalyst.

Test: Surface Chemistry - 1 (Old NCERT) - Question 20
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Which type of a property is the Brownian movement of colloidal solution?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 20

Movement is always a mechanical property.

Test: Surface Chemistry - 1 (Old NCERT) - Question 21
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Ammonia is adsorbed by
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 21

Charcoal act as an adsorbent.

Test: Surface Chemistry - 1 (Old NCERT) - Question 22
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Which among the following is adsorbed greatly by activated charcoal?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 22

SO2 due to high polarity and surface area is adsorbed maximum.

Test: Surface Chemistry - 1 (Old NCERT) - Question 23
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Which among the following is an example of sorption?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 23

When chalk is dipped in ink, absorption and adsorption both takes place which is called sorption.

Test: Surface Chemistry - 1 (Old NCERT) - Question 24
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The adsorbent used in decolouration of vinegar and sugar solution is
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 24

It adsorbs the colour in solutions.

Test: Surface Chemistry - 1 (Old NCERT) - Question 25
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Which of the following kinds of catalysis can be explained by the adsorption theory?
Detailed Solution for Test: Surface Chemistry - 1 (Old NCERT) - Question 25

Correct option is D. heterogeneous catalysis

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