Question

Match column I (process) with column II (application)

	Column I		Column II
i.	Dialysis	a.	Cleansing action of soap
ii.	Peptization	b.	Coagulation
iii.	Emulsificatioin	c.	Colloidal solution preparation
iv.	Electrophoresis	d.	Purification of colloidal solution

• A. i - d, ii - a, iii - c, iv - b
• B. i - d, ii - c, iii - a, iv - b
• C. i - c, ii - b, iii - d, iv - a
• D. i - b, ii - c, iii - a, iv - d

Hint:

Recall what each process does: purifies a colloid, prepares a colloid, stabilises oil droplets or moves charged particles.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
Each process in Column I has one typical use in Column II. Match them using the definition of each process.

Step 2: Dialysis and peptization
Dialysis removes dissolved ions and small molecules from a colloid, so it is used for purification of colloidal solution (i - d).
Peptization turns a freshly formed precipitate into a colloidal solution, so it is colloidal solution preparation (ii - c).

Step 3: Emulsification and electrophoresis
Emulsification is the cleansing action of soap, which stabilises oil droplets in water (iii - a).
Electrophoresis moves charged colloidal particles towards an electrode and is linked with coagulation (iv - b).

Step 4: Compare the options
The combination i - d, ii - c, iii - a, iv - b matches option B.

Final Answer:
The correct matching is i - d, ii - c, iii - a, iv - b. \[ \boxed{\text{(B) }\text{i - d, ii - c, iii - a, iv - b}} \]