-[NH(CH2)6NHCO(CH2)4CO]-n is a -
1. Copolymer.
2. Addition polymer.
3. Thermo-setting polymer.
4. Homopolymer.
Which of the following natural products is not a polymer ?
1. DNA
2. Cellulose
3. ATP
4. Urease
Synthetic human hair wigs are made from a copolymer of vinyl chloride and acrylonitrile and is called:
1. PVC
2. polyacrylonitrile
3. cellulose
4. dynel
Nylon-6,6 is a polyamide obtained by the reaction of
1. COOH(CH2)4COOH + H2NC6H4NH2 - (p)
2. COOH(CH2)4COOH + NH2(CH2)6NH2
3. COOH(CH2)4COOH + NH2(CH2)4NH2
4. COOHC6H4COOH - (p) + NH2(CH2)6NH2
Which one is protein fibre ?
1. Cotton
2. Rayon
3. Silk
4. Polyster
Bakelite is prepared by the reaction between
1. urea and formaldehyde
2. ethylene glycol
3. phenol and formaldehyde
4. tetramethylene glycol
Terylene is a condensation polymer of ethylene glycol and
1. Benzoic acid
2. Phthalic acid
3. Salicylic acid
4. Terephthalic acid
Melamine plastic crockery is a copolymer of:
1. HCHO and melamine
2. HCHO and ethylene
3. Melamine and ethylene
4. none of the above
Acrilan is a hard, wool-like feel and a high melting material. Which of the following represents its structure?
1. (-CH2-CH|COOC2H5-)n
2. (-CH2-CH|Cl-)n
3. (-CH2-CH|CN-)n
4. (-CH2-CH3|C|COOCH3-)n
The polymer that can be classified as polyster polymer is :
1. Bakelite
2. Melamine
3. Nylon-66
4. Terylene