MEDIUM
Earn 100

What are the dispersed phase and dispersion medium in milk?

Important Questions on Surface Chemistry

EASY
The most appropriate method of making egg-albumin sol is:
EASY
The coagulation values in millimoles per litre 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
MEDIUM
Among the following, the correct statement is:
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The correct option among the following is.
MEDIUM

Give reasons for the following statement:

Smoke from fire often has blue tinge

EASY
When a sulphur sol is evaporated sulphur is obtained. On mixing with water sulphur sol is not formed. The sol is
MEDIUM
In the coagulation of a positive sol, the flocculating power of the ions PO43-,SO42- and Cl- decreases in the order
EASY
Fog is a colloidal solution of:
EASY
For coagulation of arsenious sulphide sol, which of the following salt solutions will be most effective?
MEDIUM
As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order:
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The mass of Haemoglobin in mg required to protect from coagulation of 50 mL of a gold sol on adding 5 mL of 10% NaCl solution is: (gold number of Haemoglobin =0.03)
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How does the precipitation of colloidal smoke take place in Cottrell precipitator?
HARD
The correct statement(s) about surface properties is(are)
EASY
Colloidal solution commonly used in treatment of skin diseases is:
EASY

Match the following:

(i) Foam (a) smoke
(ii) Gel (b) cell fluid
(iii) Aerosol (c) jellies
(iv) Emulsion (d) rubber
  (e) froth
  (f) milk
MEDIUM
What happens when a beam of light is passed through a colloidal solution?
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The coagulating power of electrolytes having ions Na+,  Al3+ and Ba2+ for arsenic sulphide sol increases in the order,
EASY
The INCORRECT statements below regarding colloidal solutions is : 
EASY
A sample of red ink (a colloidal suspension) is prepared by mixing eosine dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :