Properties of Plastics
Properties of Plastics
The first man - made plastic was created by Alexander Parkes who publicly demonstrated it in 1862 at the Great International Exhibition in London. Plastic is an organic material of high molecular weight with specific properties. Most of the plastics are polymers having long chains.
A plastic is a synthetic material, which can be moulded or set into any desired shape when soft, and then harden to produce articles. Some plastics have lined some have cross links. They are usually synthetic, most commonly derived from petrochemicals, but many are partially natural.
Properties of Plastics:
Although different types of plastics differ in some physical and chemical properties, the following properties are common to most of them.
Plastic are _____________ in weight . | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct ? (a) The first man - made plastic was created by Alexander parks . (b) Plastics have much less toughness as compared to metals & Alloys like steel . (c) Plastics are much lighter in weight as compared to wood, metals etc .
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| Right Option : D | |||
| View Explanation | |||
Plastics are _____________ in water and it is used for making bottles, buckets, and other containers used for storing water. | |||
| Right Option : B | |||
| View Explanation | |||
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