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Nylon or Polyester

Nylon or Polyester

It is important to reduce the negative consequences of plastics on the environment.

Plastic is easily mouldable, so the articles can be made in any shape and size.

Refuse (Avoid): 

1. The best thing to do is to avoid using plastic products. 

2. One-time use throw away plastics can often be avoided.

Reduce : Reducing the amount of plastic we use is important. 

Reuse : If possible products made of plastics can be used again and again. 

Recycle: 

1. It is better to recycle plastic waste. 

2. Separating plastic waste (based on the resin code) and making sure it gets recycled is good as it turns waste materials into something new. 

3. Then it will not be thrown away in landfills, open dumps or ending up as litter in the environment. 

Solid waste can be converted into resources such as electricity and compost through thermal and biological means.

Advantages-and disadvantages of synthetic fibres.

1. The increase in the use of plastics, particularly the one-time use and throw away plasticshas serious impacts on the environment, animals and our health. 

2. We have seen garbage dumps with different plastics. One big problem with plastics is that they do not decompose or biodegrade. 

3. This leads to large amounts of waste that will not disappear and end up accumulating and polluting the environment. 

4. Many animals confuse plastic for food and eat it by accident. When leftover food is thrown away it is often packed in plastic. Animals smell the leftover food and eat the plastic by accident.

1. In summer it is better to wear clothing that is made out of cotton materials rather than synthetic.

2. This is because most synthetic fibres absorb very little moisture and do not allow air circulation making them hot and uncomfortable to wear.

1. In 2016, scientists from Japan tested different bacteria from a bottle recycling plant and found that Ideonellasakaiens is 201-F6 could digest the plastic used to make single-use drinks bottles that are made of polyethylene terephthalate (PET). 

2. The bacteria works by secreting an enzyme known as ‘PETase’ , that breaks down plastic into smaller molecules.

3. These smaller molecules are then absorbed by the bacteria as a food source. 

4. The scale of the bacteria breaking down plastics is much slower and will therefore not solve the crisis we are facing.

1. Glass is prepared by heating (SiO) silicondioxide until it melts, about 1700°C and Sodium Carbonatfe is added to it. 

2. Then it is cooled down really fast. 

3. When SiO2 silicondi-oxide melts, the silicon and oxygen atoms break out of their crystal structure. 

4. If we cooled it slowly, the atoms would slowly line up back into their crystalline arrangement. 

5. But if we cool the liquid fast enough, the atoms of the silica will be halted in their tracks, they won’t have time to line up, and they will be stuck in any old arrangement, with no order to the arrangement of the atoms.

6. We call materials like this as amorphous.

Poly Vinyl Chloride.

1. c

2. a 

3. d 

4. b

1. monomers 

2. proteins 

3. Cellulose 

4. Ethylene, propylene 

5. Fibres

1. c 

2. d 

3. a 

4. b

Correct answer is (a) Plastic

1. True

2. True

3. True 

Correct statement: is the first fully processed synthetic fibre.

4. True

5. True

6. False 

Correct statement: Bakelite and and melamine are some examples of thermosettingplastic

7. True

8. False 

Correct statement : can be found in toothpaste, facewash and bodyscrubs.

9. False 

Correct statement: Plastics are not environment friendly.

10. True

11. True. 

Correct statement: Electric switches, plugs, sockets and handles of cooling utensils are made up of thermosetting plastic

The cotton cloth burns completely. Does not melt and has the odour of burning paper.

Correct answer is (b) rayon

(b) chemicals substances

Correct answer is (d) Rayon

Correct answer is (c) Silk