Surface Chemistry-Colloidal State (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry): Questions 1 - 6 of 30

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Question number: 1

» Surface Chemistry » Colloidal State » Coagulation

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Appeared in Year: 2016

MCQ▾

Question

The coagulation values in millimoles per liter of the electrolytes used for the coagulation of As2S3 are given below:

I. (NaCl) = 52,

II. (BaCl2) = 0.69

III. (MgSO4) = 0.22

The correct order of their coagulating power is

Choices

Choice (4) Response

a.

III > II > I

b.

III > I > II

c.

I > II > III

d.

II > I > III

Question number: 2

» Surface Chemistry » Colloidal State » Brownian Movement

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MCQ▾

Question

In Brownian movement or motion the paths of the particles are?

Choices

Choice (4) Response

a.

Curved

b.

Uncertain

c.

Zig – Zag

d.

Linear

Question number: 3

» Surface Chemistry » Colloidal State » Preparation and Properties of Colloids

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MCQ▾

Question

In the hydrolysis of , what is the colour of colloidal solution formed?

Choices

Choice (4) Response

a.

Gray

b.

Red

c.

Yellow

d.

Question does not provide sufficient data or is vague

Question number: 4

» Surface Chemistry » Colloidal State » Preparation and Properties of Colloids

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MCQ▾

Question

Colour of colloidal solution depends on?

Choices

Choice (4) Response

a.

Wavelength of light

b.

Size of particles

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 5

» Surface Chemistry » Colloidal State » Preparation and Properties of Colloids

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MCQ▾

Question

Freshly prepared ferric hydroxide on treatment with a small amount of ferric chloride solution at once forms a dark reddish brown solution. The process involved here is?

Choices

Choice (4) Response

a.

Electrophoresis

b.

Peptization

c.

Dispersion

d.

Suspension

Question number: 6

» Surface Chemistry » Colloidal State » Preparation and Properties of Colloids

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MCQ▾

Question

The stability of lyophobic colloids is due to?

Choices

Choice (4) Response

a.

A layer of medium of dispersion on their particles

b.

Smaller size of their particles

c.

Large size of their particles

d.

Charge on their particles

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