Match the column :
`{:(,"Polymer",,"Commercial ",),((i),"Polyester of glycol and phthalic acid",(a),"Novolac",),((ii),"Copolymer of 1,3-butadiene and styrene",(b),"Glyptal",),((iii),"Phenol and formaldehyde resins",(c ),"Buna-S",),((iv),"Polyester of glycol and terephthalic acid ",(d),"Buna-N",),((v),"Copolymer of 1,3-butadiene and acrylonitrile",(e),"Dacron",):}`

Options

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

Answer

To solve the matching question, we need to pair each polymer with its corresponding commercial name. Let's go through each item step by step.

### Step 1: Identify the first polymer
- **Polymer:** Polyester of glycol and phthalic acid
- **Commercial Name:** Glyptal

### Step 2: Identify the second polymer
- **Polymer:** Copolymer of 1,3-butadiene and styrene
- **Commercial Name:** Buna-S

### Step 3: Identify the third polymer
- **Polymer:** Phenol and formaldehyde resins
- **Commercial Name:** Novolac

### Step 4: Identify the fourth polymer
- **Polymer:** Polyester of glycol and terephthalic acid
- **Commercial Name:** Dacron

### Step 5: Identify the fifth polymer
- **Polymer:** Copolymer of 1,3-butadiene and acrylonitrile
- **Commercial Name:** Buna-N

### Final Matching
Now we can summarize the matches:
1. Polyester of glycol and phthalic acid → Glyptal (B)
2. Copolymer of 1,3-butadiene and styrene → Buna-S (C)
3. Phenol and formaldehyde resins → Novolac (A)
4. Polyester of glycol and terephthalic acid → Dacron (E)
5. Copolymer of 1,3-butadiene and acrylonitrile → Buna-N (D)

### Answer Summary
- (i) → (b) Glyptal
- (ii) → (c) Buna-S
- (iii) → (a) Novolac
- (iv) → (e) Dacron
- (v) → (d) Buna-N