Tag: thermocol

Questions Related to thermocol

Plastics are mainly used by everyone because :

chemistry man made materials plastic waste thermocol ways to reduce non degradable garbage

  1. They are cheap

  2. Easy to handle

  3. Do not break

  4. Light weight

Show answer
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?

chemistry man made materials plastic waste thermocol ways to reduce non degradable garbage

  1. Glass

  2. Water

  3. Plastic

  4. All of these

Show answer
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?

chemistry man made materials plastic waste thermocol ways to reduce non degradable garbage

  1. Buckets

  2. Lunch boxes

  3. Toys

  4. Water containers

Show answer
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?

chemistry man made materials plastic waste thermocol ways to reduce non degradable garbage

  1. Steel

  2. Glass

  3. Plastics

  4. Leather

Show answer
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:

chemistry man made materials plastic waste thermocol ways to reduce non degradable garbage

  1. elastics

  2. plastics

  3. polythenes

  4. None of these

Show answer
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:

chemistry man made materials plastic waste thermocol ways to reduce non degradable garbage

  1. toys

  2. combs

  3. recording tapes

  4. All of the above

Show answer
Correct Option: C
Explanation:

Plastic material polyester used in Recording tapes. 

Toys and combs are made up of PVC and bakelite.

Polyblend is ___________________.

zoology garbage in, garbage out plastic waste thermocol ways to reduce non degradable garbage recycling of paper

  1. A mixture of two different types of plastics

  2. A fine powder of recycled modified plastic

  3. A blend of plastic and bitumen

  4. None of these

Show answer
Correct Option: B
Explanation:

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.

zoology garbage in, garbage out plastic waste thermocol ways to reduce non degradable garbage

  1. True

  2. False

  3. Either

  4. Neither

Show answer
Correct Option: B
Explanation:
Materials like plastics are non-biodegradable which are not broken down into simpler substances by the action of microbes. Such materials can only be broken down by physical processes under the conditions of high temperature and pressure. The non-biodegradable items persist in nature for a long period of time and hence, for their elimination, they are acted upon physical processes because they are made up of cross linked polymers which can be broken down under extreme physical conditions.
Hence, the statement given in the question is not correct.
So, the correct answer is 'False'.

Give are the sets of terms. Identify the odd term. Write the category of the other.

zoology garbage in, garbage out plastic waste thermocol ways to reduce non degradable garbage recycling of paper

  1. Plastic

  2. Nylon

  3. Cotton

  4. Rubber

  5. Foam

Show answer
Correct Option: A

Ecological imbalance in the biosphere is created by 

zoology garbage in, garbage out plastic waste thermocol ways to reduce non degradable garbage recycling of paper

  1. Cutting of forests

  2. Conservation of forest

  3. Production of more plastics

  4. Both A and C

Show answer
Correct Option: D
Explanation:

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.

Therefore, the correct answer is option D.