Tag: thermocol
Questions Related to thermocol
Plastics are mainly used by everyone because :
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They are cheap
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Easy to handle
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Do not break
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Light weight
Plastics are mainly used by everyone because it is light weight, cheap, easy to handle and does not break easily.
Which of the following are examples of transparent material?
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Glass
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Water
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Plastic
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All of these
Glass, water, plastic(some types) are examples of transparent material as the light can pass through them.
Which of the following object(s) is/are made of plastics?
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Buckets
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Lunch boxes
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Toys
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Water containers
All of them are made of plastics because plastic is durable, non- corrosive, light in weight and inexpensive. Thus buckets, lunch boxes, toys, water containers, pipes, etc. are made up of plastic.
Which of the following material is not used in making plate?
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Steel
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Glass
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Plastics
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Leather
Steel, glass, plastics are used in making plates.
Polymeric organic materials are called:
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elastics
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plastics
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polythenes
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None of these
Polymeric organic materials are called plastics.
The use of plastic material polyesters is in:
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toys
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combs
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recording tapes
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All of the above
Plastic material polyester used in Recording tapes.
Polyblend is ___________________.
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A mixture of two different types of plastics
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A fine powder of recycled modified plastic
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A blend of plastic and bitumen
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None of these
Ahmed khan, a plastic sack manufacturer of Bangalore in 1998, developed polyblend, a fine powder of recycled modified plastic in collaboration with R. V. Collage of Engineering and Bangalore city Corporation. He proved that the mixture of polyblend and bitumen was better for road carpeting as it had better water repellent property. It increased road life by a factor of three.
The materials like plastics are not acted upon by physical process.
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True
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False
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Either
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Neither
Give are the sets of terms. Identify the odd term. Write the category of the other.
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Plastic
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Nylon
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Cotton
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Rubber
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Foam
Ecological imbalance in the biosphere is created by
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Cutting of forests
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Conservation of forest
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Production of more plastics
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Both A and C
Deforestation means the felling and clearing of forest cover or tree plantations in order to accommodate agricultural, industrial or urban use. It involves permanent end of forest cover to make that land available for residential, commercial or industrial purpose. Deforestation can also be seen as removal of forests leading to several imbalances ecologically and environmentally. Synthetic products are materials that are made by chemical processes that are formed artificially by chemical synthesis such as plastic bags, chairs, toys, etc. These synthetic materials can last for years and cannot be decomposed by decomposers. These synthetic products like different plastic products are made up of plastic; this creation of man hinders the flow of materials in the biosphere. Improper disposal is one of the reasons why synthetic products become of the problems and causes of ecological imbalance. It destroys ecosystem that can kill the organism and at the same time it causes various problems in the living world such as pollution.