In this page we have Class 7 Science Chapter 3: Fibre to Fabric Important Questions . Hope you like them and do not forget to like , social share
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Short Answer Type Questions
Name the following methods:
(a) Removing fleece from the body of animals:
(b) Washing fleece to free it from grease, dirt and dust:
(c) Grouping of wool as per length, colour and texture:
(d) Colouring of the fibres:
(e) Twisting of fibre into yarns:
Distinguish between silk and wool fibres?
What is selective breeding and when do you prefer selective breeding?
Mention the place and the type of wool that is obtained from the following breeds of sheep:
Identify the animal fibre:
(a) It absorbs good amount of moisture without becoming damp-
(b) It is secreted by a Caterpillar-
(c) It is fire resistant-
(d) It is a popular fabric for tailoring fine garments-
(e) It can be dyed easily and is very elastic-
Why cannot a single Silk fibre form a thread?
What are tasar and muga?
How do the farmers come to know that a silkworm is ready to spin a cocoon?
Why does the farmer keep Silk moth's egg in warm and humid conditions?
Why is it not advisable to wear nylon clothes while cooking?
Long Answer type Questions
Distinguish between silk and wool fibre?
From what is Cashmere wool obtained?
What is sericulture?
Write the uses of camel wool?
What are the health hazards of silk production?
What are the characteristics of silk fibres? Describe the stages involved in the life cycle of a silkworm with a neat and labelled diagram?
How will you distinguish wool from cotton fibre?
Briefly explain the steps involved in the production of wool?
Explain about the rearing and breeding of sheep?
Briefly explain the steps involved in the processing of silk?
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