Tag: man made materials

Questions Related to man made materials

Plastics are mainly used by everyone because :

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  1. They are cheap

  2. Easy to handle

  3. Do not break

  4. Light weight

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Correct Option: A,B,C,D
Explanation:

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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  1. Glass

  2. Water

  3. Plastic

  4. All of these

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Correct Option: D
Explanation:

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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  1. Buckets

  2. Lunch boxes

  3. Toys

  4. Water containers

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Correct Option: A,B,C,D
Explanation:

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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  1. Steel

  2. Glass

  3. Plastics

  4. Leather

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Correct Option: D
Explanation:

Steel, glass, plastics are used in making plates.

The leather is used for making clothes and shoes.

Polymeric organic materials are called:

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  1. elastics

  2. plastics

  3. polythenes

  4. None of these

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Correct Option: B
Explanation:

Polymeric organic materials are called plastics.

Most plastics are synthetic solids composed of petroleum in long chain of polymer bonds.

The use of plastic material polyesters is in:

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  1. toys

  2. combs

  3. recording tapes

  4. All of the above

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Correct Option: C
Explanation:

Plastic material polyester used in Recording tapes. 

Toys and combs are made up of PVC and bakelite.

Which of the following is biodegradable substance?

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  1. Cotton Cloth

  2. Thermosetting plastics

  3. Thermoplastics

  4. PVC Pipes

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Correct Option: A
Explanation:

As a natural product, cotton is completely biodegradable, which means that it breaks down when put into a composting pile or bin. Because of cotton's biodegradable properties, all-cotton clothing can also be recycled and used in the manufacture of useful materials, such as household insulation


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

Why the waste created by plastics is not friendly with environment ?

chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

  1. Plastics are non biodegradable

  2. Plastics are biodegradable

  3. On burning it causes pollution due to evolution of poisonous gases

  4. (1) & (3) both

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Correct Option: D
Explanation:

Plastics is not environment friendly because it is non biodegradable and on burning it leaves poisonous gases.
Option D is correct.

Fill in the blanks by suitable words to make correct statements:

When ________ is burnt, it releases toxic gases into the air causing air pollution.

chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

  1. LPG

  2. Plastic

  3. Both A and B

  4. None of them

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Correct Option: B

Disposal of plastic is a major problem because :

chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

  1. It is non biodegradable

  2. It is biodegradable

  3. It takes several years to decompose

  4. (1) & (3) both

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Correct Option: D
Explanation:

Plastic is non biodegradable and also it take several thousands of years and also on burning it leave many poisonous gases.
Option D is correct.