1. Discuss the properties of at least five types of fabrics
on the basis of the results obtained when they are
burnt.
2. What are the advantages and disadvantages of
synthetic fibres?
3. Name at least five types of fibres and discuss their
sources and uses.
4. What are the different types of fertilisers? Give
examples of each type.
5. list some good properties of fertiliser. despite being so useful,why do farmers often switch over to other options
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Answer:
1st ans:- The fabrics made from Rayon, are ideal for hot and humid climate, just like cotton, as they are soft, smooth, cool, comfortable and do not insulate body heat.
2nd ans:- Most synthetic fibres have good elasticity.
Most fabrics made of synthetic fibres do not wrinkle easily.
Fabrics made of synthetic fibres are generally more durable, less expensive, and more readily available than those made of natural fibres.
Most synthetic fibres can handle heavy loads without breaking.
3rd ans Plant fibers
Category hidetypes
Bast fiber Bast fibers are collected from the outer cell layers of the plant's stem. These fibers are used for durable yarn, fabric, packaging, and paper. Some examples are flax, jute, kenaf, industrial hemp, ramie, rattan, and vine fibers.
4rh ans:-Organic and Inorganic Fertilizers. Organic fertilizers are made from natural and organic materials—mainly manure, compost, or other animal and plant products. ...
Nitrogen Fertilizers. ...
Phosphate Fertilizers. ...
Potassium Fertilizers. ...
Fertilizer Forms.
5th ans:-Good properties of applying fertilisers to the land: It increases crop yield and improves poor quality land. Manure improves soil texture, recycles nitrogen and introduces essential bacteria.
Explanation:
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