Q1 what is difference between Thermo plastic and Thermo setting plastic ?
Q2 write difference between Biodegradable and unbioderadable ?
Q3 write the charterrists of Synthetic Fibres ?
Q4. What do u mean by 3 hr
Q5 Give two uses of Nylon ?
Please answer these questions
Answers
Answer:
Q 1. The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermosetting plastics always remain in a permanent solid state.
Q 2. Biodegradable substances are those that degrates or break down naturally. Non biodegradable substances are those that do not degrade easily.
Q 3. - synthetic fibers are cheaper.
- synthetic fibers are stronger.
- synthetic fibers are more durable.
- synthetic fibers dried up in less time.
- synthetic fibers are easy to maintain.
Q 4. sorry this one I don't know...
Q 5. - It is used to make fishnet.
- It is used as plastic in manufacturing machine parts.
Answer:
☆Ans1:
The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics always remain in a permanent solid state. Think of thermoplastics as butter – butter can be melted and cooled multiple times to form various shapes.
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☆Ans2:
Biodegradable substances are those that degrades or break down naturally. Non-biodegradable substances are those that do not degrade easily. These terms itself defines the ability of the substances which are degradable or not.
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☆Ans3: Characteristics of Synthetic Fibres:
- Synthetic fibres are cheaper than natural fibre.
- Synthetic fibres are stronger than natural fibre.
- Synthetic fibres are more durable than natural fibre.
- Synthetic fabrics are dried up in less time.
- Synthetic fibres are easy to maintain and wash.
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☆Ans4:
3hr rule:-
The 3hr rule days that while in Boston if you have no plans you have absolutely no idea whrre you'll end up in 3 hrs from the point whre you no longer had any plans.
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☆Ans5:Uses of Nylon
- Clothing – Shirts, Foundation garments, lingerie, raincoats, underwear, swimwear and cycle wear.
- Industrial uses – Conveyer and seat belts, parachutes, airbags, nets and ropes, tarpaulins, thread, and tents.
- It is used to make a fishnet.
- It is used as plastic in manufacturing machine parts.