Question

Match List-I with List-I

List-I		List II
A.	Phenol-formaldehyde resin	I	Glyptal
B.	The copolymer of 1,3-butadiene and styrene	II	Novolac
C.	Polyester of glycol and phthalic acid	III	Buna-S
D.	Polyester of glycol and terephthalic acid	IV	Dacron

Choose the correct answer from the option given below:

• A. A-II, B-III, C-IV, D-I
• B. A-II, B-III, C-I, D-IV
• C. A-II, B-I, C-III, D-IV
• D. A-III, B-II, C-IV, D-I

Answer 1

The Correct Option is B

To solve this matching question, we need to determine which chemical compound or material corresponds with the given descriptions in List-II. Let's analyze each option in List-I: 

1. Phenol-formaldehyde resin:
   • Phenol-formaldehyde resin is commonly known as Novolac. Novolac is a type of phenolic resin derived from the reaction between phenol and formaldehyde.
   • Thus, the correct match for Phenol-formaldehyde resin is II: Novolac.
2. The copolymer of 1,3-butadiene and styrene:
   • This is a classical example of a synthetic rubber known as Buna-S. Buna-S is made by copolymerizing styrene and butadiene.
   • Thus, the correct match for this copolymer is III: Buna-S.
3. Polyester of glycol and phthalic acid:
   • Polyesters formed from the reaction of glycol and phthalic acid are known as Glyptal. Glyptal is commonly used in the production of paints and coatings.
   • Thus, the correct match for this polyester is I: Glyptal.
4. Polyester of glycol and terephthalic acid:
   • This type of polyester is known as Dacron, which is also referred to as PET (Polyethylene terephthalate). It is widely used in synthetic fibers.
   • Thus, the correct match for this polyester is IV: Dacron.

Based on the analysis, the correct answer is:

• A-II, B-III, C-I, D-IV

This matching ensures that each chemical process or compound is correctly associated with its respective product or material.