1. Which one of the following is a chain growth polymer ?
A
Nucleic acid
B
Polystyrene
C
Protein
D
Starch
Answer :
Polystyrene
2. Which of the following is not a characteristic of thermosetting polymers?
A
Linear or slightly branched long chain polymers
B
Heavily branched and cross-linked polymers
C
Become infusible on moulding
D
Cannot be remoulded or reused on heating
Answer :
Linear or slightly branched long chain polymers
3. Nylon threads are made of
A
polyester polymer
B
polyamide polymer
C
polyethylene polymer
D
polyvinyl polymer
Answer :
polyamide polymer
4.
Match the column I with column II and mark the appropriate choice.
| Column I | Column II | ||
|---|---|---|---|
| a. | $$PVC$$ | 1. | Rubber |
| b. | Condensation polymer | 2. | Thermoplastic |
| c. | Polysaccharide | 3. | Dacron |
| d. | Elastomer | 4. | Natural polymer |
A
a - 2, b - 3, c - 4, d - 1
B
a - 1, b - 2, c - 4, d - 3
C
a - 3, b - 4, c - 1, d - 2
D
a - 4, b - 1, c - 3, d - 2
Answer :
a - 2, b - 3, c - 4, d - 1
5. Natural rubber is a polymer of
A
butadiene
B
ethyne
C
styrene
D
isoprene
Answer :
isoprene
6. Which of the following polymers of glucose is stored by animals?
A
Cellulose
B
Amylose
C
Amylopectin
D
Glycogen
Answer :
Glycogen
7. Nylon 6, 6 is a polyamide obtained by the reaction of
A
$$COOH{\left( {C{H_2}} \right)_4}COOH + $$ $$N{H_2}{C_6}{H_4}N{H_2} - \left( p \right)$$
B
$$COOH{\left( {C{H_2}} \right)_4}COOH + $$ $$N{H_2}{\left( {C{H_2}} \right)_6}N{H_2}$$
C
$$COOH{\left( {C{H_2}} \right)_6}COOH + $$ $$N{H_2}{\left( {C{H_2}} \right)_4}N{H_2}$$
D
$$COOH{C_6}{H_4}COOH - \left( p \right) + $$ $$N{H_2}{\left( {C{H_2}} \right)_6}N{H_2}$$
Answer :
$$COOH{\left( {C{H_2}} \right)_4}COOH + $$ $$N{H_2}{\left( {C{H_2}} \right)_6}N{H_2}$$
8. Which of the following statements is false?
A
Artificial silk is derived from cellulose
B
Nylon-66 is an example of elastomer
C
The repeat unit in natural rubber is isoprene
D
Both starch and cellulose are polymers of glucose
Answer :
Nylon-66 is an example of elastomer
9. The polymer containing strong intermolecular forces e.g. hydrogen bonding, is
A
teflon
B
nylon 6, 6
C
polystyrene
D
natural rubber
Answer :
nylon 6, 6
10.
Match the column I with column II and mark the appropriate choice.
| Column I | Column II | ||
|---|---|---|---|
| a. | Buna-$$S$$ | 1. | Thermosetting |
| b. | Polyamides | 2. | Fibres |
| c. | Polyvinyls | 3. | Elastomer |
| d. | Urea-formaldehyde | 4. | Thermoplastics |
A
a - 4, b - 3, c - 1, d - 2
B
a - 2, b - 1, c - 3, d - 4
C
a - 3, b - 2, c - 4, d - 1
D
a - 1, b - 4, c - 2, d - 3
Answer :
a - 3, b - 2, c - 4, d - 1