Tag: thermocol

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

Polyblend is ___________________.

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

The materials like plastics are not acted upon by physical process.

  1. True

  2. False

  3. Either

  4. Neither
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice zoology garbage in, garbage out plastic waste thermocol ways to reduce non degradable garbage recycling of paper

Ecological imbalance in the biosphere is created by 

  1. Cutting of forests

  2. Conservation of forest

  3. Production of more plastics

  4. Both A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
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.