Tag: environmental impact: plastics

Questions Related to environmental impact: plastics

Like synthetic fibres, plastic is also a:

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. polymer

  2. polythene

  3. polycot

  4. acrylic

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Correct Option: A

What are the two types of arrangement in plastics ?

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. Linear, Horizontal

  2. Horizontal, Cross-linked

  3. Linear, Cross-linked

  4. Linear, Vertical

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Correct Option: C

Which of the following statement is true about PVC (polyvinyl chloride) and polythene?

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. They are thermoplastics

  2. They are thermosetting plastics

  3. They are examples of natural substances

  4. They are natural fibres

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Correct Option: A
Explanation:

Thermoplastics on heating get deformed (its shape and size can be altered) and thus can also be bent. On the other hand, thermosetting plastics cannot be bent once moulded. Some examples of Thermoplastics are – Polythene and PVC. Some examples of Thermosetting plastics are – Bakelite and Melamine.


Hence, the correct option is $\text{A}$

A material which is not easily decomposed by natural processes is termed as :

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. biodegradable material

  2. non-biodegradable material

  3. recycled material

  4. natural material

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Correct Option: B
Explanation:

A material which is not easily decomposed by natural processes is termed as $\text {non-biodegradable material}$. Examples are polyethene, PVC, PS. It takes many years for decomposition. Hence, option B is correct.

Which of the following are uses of plastics in health care industry?

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  1. Packaging of tablets

  2. Stitching wounds

  3. Syringes

  4. All of the above

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Correct Option: D
Explanation:

Plastics in health care industry are used in packaging of medicines;plastic threads are used for stitching wounds. Also syringes, gloves and many kind of medical instruments are made up of plastic.

Why plastic containers are favoured for storing food?

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. Plastics are light in weight

  2. Plastic is a strong and durable material 

  3. Plastics are easy to handle

  4. All of the above

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Correct Option: D
Explanation:

Plastics are used to store food because:
(i) Plastics are light in weight.
(ii) Plastic is a strong and durable material and
(iii) plastics are easy to handle.

Telephone instruments, plastic toys, ball point pens, plastic bowls are examples of:
chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. Thermoplastics

  2. Thermosetting plastic

  3. Polyester

  4. None of the above

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Correct Option: A
Explanation:

 Telephone instruments, plastic toys, ball point pens, plastic bowls  are thermoplastics and so can be recycled.
Cooker handles, carry bags, plastic covering on electric wire, plastic chains etc are thermosetting plastics and so cannot be recycled.

Plastics are ________ water and therefore are used in making buckets.
chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. lighter than

  2. soluble in

  3. insoluble in

  4. none of these

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Correct Option: C

Like synthetic fibres, plastic is also a :

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. polymer

  2. polyester

  3. natural

  4. None of the above

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Correct Option: A
Explanation:

Plastic is also a polymer like the synthetic fibre. It is the chain of small units joined together.

Most of the thermoplastic :

chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

  1. can be recycled

  2. cannot be recycled

  3. cannot be heated

  4. none of the above

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Correct Option: A
Explanation:

A thermoplastic is the material which become soft on heating and hard on cooling several times.
Therefore, they can be recycled.