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Test: Surface Chemistry - 1


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25 Questions MCQ Test Topic-wise MCQ Tests for NEET | Test: Surface Chemistry - 1

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Test: Surface Chemistry - 1 - Question 1

Which among the following is a property of physisorption?

Detailed Solution for Test: Surface Chemistry - 1 - Question 1

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

Test: Surface Chemistry - 1 - Question 2

Powdered substances are more effective adsorbents than their crystalline forms because:

Detailed Solution for Test: Surface Chemistry - 1 - Question 2

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

Test: Surface Chemistry - 1 - Question 3

Which among the following is true for chemisorptions?

Detailed Solution for Test: Surface Chemistry - 1 - Question 3

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

Test: Surface Chemistry - 1 - Question 4

In physical adsorption increases when:

Detailed Solution for Test: Surface Chemistry - 1 - 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 - Question 5

In physisorption, adsorption is generally

Detailed Solution for Test: Surface Chemistry - 1 - Question 5

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

Test: Surface Chemistry - 1 - Question 6

The extent of adsorption increases with the ______.

Detailed Solution for Test: Surface Chemistry - 1 - Question 6

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

Test: Surface Chemistry - 1 - Question 7

A biochemical catalyst is:

Detailed Solution for Test: Surface Chemistry - 1 - Question 7

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

Test: Surface Chemistry - 1 - Question 8

The number of phases in colloidal system are:

Detailed Solution for Test: Surface Chemistry - 1 - 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 - Question 9

Which among the following is not the method of colloidal purification?

Detailed Solution for Test: Surface Chemistry - 1 - Question 9

Electrical Disintegration is not a method of colloidal purification.

Test: Surface Chemistry - 1 - Question 10

Chromatography is based on the principle of

Detailed Solution for Test: Surface Chemistry - 1 - Question 10

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

Test: Surface Chemistry - 1 - Question 11

Which among the following substances is an example of multimolecular colloids?

Detailed Solution for Test: Surface Chemistry - 1 - 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 - Question 12

Tyndall effect in colloidal solution is due to:

Detailed Solution for Test: Surface Chemistry - 1 - Question 12

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

Test: Surface Chemistry - 1 - Question 13

Adsorption isobar is a curve showing variation of adsorption ______.

Detailed Solution for Test: Surface Chemistry - 1 - Question 13

Isobar means when pressure is constant.

Test: Surface Chemistry - 1 - Question 14

Which step of enzyme catalysis mechanism is shown in figure?

Detailed Solution for Test: Surface Chemistry - 1 - Question 14

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

Test: Surface Chemistry - 1 - Question 15

Which of the following statement is true about Langmuir’s adsorption?

Detailed Solution for Test: Surface Chemistry - 1 - Question 15

Langmuir isotherm assume monolayer formation only.

Test: Surface Chemistry - 1 - Question 16

When adsorption of oxalic acid is carried out on activated charcoal, then activated charcoal is known as

Detailed Solution for Test: Surface Chemistry - 1 - Question 16

Surface on which adsorption occurs is known as adsorbent.

Test: Surface Chemistry - 1 - Question 17

Which of the following metal solution cannot be prepared by Bredig’s arc method?

Detailed Solution for Test: Surface Chemistry - 1 - Question 17

Potassium due to very high reactivity, canot be used here.

Test: Surface Chemistry - 1 - Question 18

The average molecular mass of colloidal can be determined by

Detailed Solution for Test: Surface Chemistry - 1 - Question 18

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

Test: Surface Chemistry - 1 - Question 19

Which of the following processes does not involve a catalyst?

Detailed Solution for Test: Surface Chemistry - 1 - Question 19

Thermite process doesn’t require a catalyst.

Test: Surface Chemistry - 1 - Question 20

Which type of a property is the Brownian movement of colloidal solution?

Detailed Solution for Test: Surface Chemistry - 1 - Question 20

Movement is always a mechanical property.

Test: Surface Chemistry - 1 - Question 21

Ammonia is adsorbed by

Detailed Solution for Test: Surface Chemistry - 1 - Question 21

Charcoal act as an adsorbent.

Test: Surface Chemistry - 1 - Question 22

Which among the following is adsorbed greatly by activated charcoal?

Detailed Solution for Test: Surface Chemistry - 1 - Question 22

SOdue to high polarity and surface area is adsorbed maximum.

Test: Surface Chemistry - 1 - Question 23

Which among the following is an example of sorption?

Detailed Solution for Test: Surface Chemistry - 1 - Question 23

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

Test: Surface Chemistry - 1 - Question 24

The adsorbent used in decolouration of vinegar and sugar solution is

Detailed Solution for Test: Surface Chemistry - 1 - Question 24

It adsorbs the colour in solutions.

Test: Surface Chemistry - 1 - Question 25

The adsorbent used to adsorb the dye particles in the dying industry is

Detailed Solution for Test: Surface Chemistry - 1 - Question 25

Alum has pores on it which adsorbs the color of dye and makes the solution colorless.
Hence D is correct.

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