1. M=ΣNiMi2/ΣNi
2. M=ΣNiMi/ΣNi
3. M=ΣNiMi2/ΣNiMi
4. None of these
M=ΣNiMi/ΣNi
1. Bakelite
2. Terylene
3. Nylon
4. Polythene
Polythene
1. terylene
2. Teflon
3. Glyptal
4. Nylon-6
Nylon-6
1. Wax
2. 1, 3-Butadiene
3. CaC2
4. Carbon black
Carbon black
1.
2.
3. Nylon 66[NH(CH2)6NHCO(CH2)4-CO-]2
4. Teflon (-CF2-CF2-)n
1. In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger
2. Natural rubber has the trans-configuration at every double bond
3. Buna-S is a copolymer of butadiene and styrene
4. Natural rubber is a 1, 4-polymer of isoprene
Natural rubber has the trans-configuration at every double bond
1.
2.
3.
4.
1.
2.
3.
4.
1. Vinyl cyanide
2. Acrolein
3. Glycol
4. Isoprene
Vinyl cyanide
1. Cellulose
2. Polyethene
3. Polyvinly chloride
4. Nylon-6
Cellulose