Synthetic Fibers And Plastics Class 8 Worksheet with Solved in Pdf
Synthetic Fibers And Plastics Class 8 Worksheet: In this page we have included Synthetic Fibers And Plastics Chapter from Grade 8 Worksheet with solution.
1.) Answer in one sentence.
A) What is a Fiber?
Answer:- Fiber is a thin thread like structure from natural or artificial substance.
B) Name two types of fibers.
Answer:- The two types of fibers are a) Natural fibers , b.) Artificial fibers.
C) Define synthetic or man-made fibers
Answer:- The Fibers made by human being are called synthetic fibers.
D) Define Biodegradable.
Answer:- The substances which gets decompose naturally is called biodegradable.
E) Define Non-biodegradable.
Answer:-The substances which do not gets decomposed by natural process is known as non- biodegradable.
F) What is 5 R principle.
Answer:- 5 R principle means Reduce, Reuse, Recycle, Recover, and Refuse.
G) Define polymer.
Answer:- A small unit combine to form a single large unit is called polymer.
2.) Choose biodegradable and non-biodegradable.
Paper, Cotton cloth, Plastic bags, Aluminium, Vegetable peels,
Wood. Answer:- Biodegradable:- Paper, cotton cloth, vegetable
peels, wood.
Non-biodegradable:- Aluminium, plastic bags.
3.) Write notes on following:-
A) Properties of plastics.
a.) Plastic is non- reactive.
b.) Plastic is light and durable.
c.) Plastic can be moulded in different shapes
d.) Plastics are cheaper than metals.
e.) Plastic is bad conductor of heat.
f.) They are used for household articles.
B) Synthetic fibers and types of synthetic fibers.
a.) Synthetic fibers are made by human beings and not obtained naturally are called synthetic fibers.
b.) It is a chain of small units joint together.
Types of synthetic fibers are:-
a.) Rayon
b.) Nylon
c.) Polyester
d.) Acrylic
4.) Fill in the blanks.
a.) Cellulose is made up of large number of glucose units.
b.) PET (polyethylene terephthalate) is a form of polyester.
c.) Polythene is an example of plastic
d.) Nylon is a type of synthetic fibers.
Also See: Class 8 Science Worksheets