Chemical Engineering - Polymer Technology
Exercise :: Polymer Technology - Section 4
| 1. |
Identify the group in which all the polymers mentioned can be used to make fibres. |
| A. |
Butadiene copolymers, Polyamides, Urea aldehyde | | B. |
Cellulose derivatives, Polyisoprene, Polyethylene | | C. |
Cellulose derivatives, Polyamides, Polyurathane | | D. |
Polypropylene, Poly vinyl chloride, Silicon |
Answer: Option B
Explanation:
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| 2. |
Molecular weights of plastics ranges from |
| A. |
1000 to 5000 | | B. |
5000 to 1000 | | C. |
20000 to 25000 | | D. |
109 to l011 |
Answer: Option C
Explanation:
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| 3. |
Non sulphonated hard bakelites are not used for making |
| A. |
ion-exchange resins | | B. |
fountain pen barrels | | C. |
formica table tops | | D. |
combs |
Answer: Option A
Explanation:
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| 4. |
Which of the following is not present in bagasse fibre ? |
| A. |
Cellulose | | B. |
Lignin | | C. |
Pentogens | | D. |
None of these |
Answer: Option D
Explanation:
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| 5. |
Epoxy resin is |
| A. |
not used for surface coating. | | B. |
a good abrasive. | | C. |
an elastomer. | | D. |
a polyester. |
Answer: Option B
Explanation:
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