Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two sarees shown by the shopkeeper and burnt them. One thread burnt with a smell of burning hair and the other burnt with the smell of burning paper. Which thread is from a pure cotton saree and which one from a pure silk saree? Give reason for your answer.

Neha went to the market with her mother to buy a silk saree for her grandmother. The shopkeeper was showing sarees of different varieties of silk but her mother wanted to take only a pure silk saree and not an artificial one. Neha was confused that how to distinguish between a pure silk and an artificial silk saree. But her mother helped her in selecting a pure silk saree for her grandmother and she was quite elated about that.
Now, answer the following questions:
(a) How her mother distinguished between pure silk saree and an artificial silk saree?
(b) Is the pure silk saree more costly than an artificial one?
(c) What values are shown by Neha's mother?

Ajay's father works in a wool industry. In his line of work, he does the job of sorting the fleece of sheep into fibres of different qualities. Ajay noticed that his father and other workers who were doing the similar kind of jobs faced a number of health problems. Ajay discussed this problem with his friends and he came to know that his father is getting health problems due to the nature of his work. Ajay is worried about his father's health. He advised his father to take care of their health and told him about the occupational hazards.
Now answer the following questions.
(a) What do you mean by occupational hazard?
(b) Name the disease that workers may at risk.
(c) What values are shown by Ajay?

Compare the burning characteristics of cotton, nylon, silk and wool.

Give a brief account of wool manufacturing.

Explain the rearing of silkworms.

Explain the phrase - "Unity is Strength" on the basis of the making of fabric from fibre.

Complete the paragraph related to the history of silk moth by filling in the blanks.
The_______(a)________silk moth lays_______(b)__________, from which hatch _______(c)_______called_______(d)_________or________(e)_______.They grow in size and when caterpillar is ready to enter the next stage of its life history called ________(f)_______, it first weaves a covering to hold itself, which is known as________(g)_________..

Rohan's uncle works as a technical advisor in a renowned fabric company of our country. Rohan came to know that different kinds of fibres are the raw materials for fabric industry and put forward the following questions to his uncle when he came home.
Answer the following questions based on the situation described above.
(i) What can we obtain the fibres like wool, cotton, silk?
(ii) What are the different steps by which woollen fibres are converted into the yarn?
(iii) What is the use of yarn?
(iv) Name the animals from which we obtain different quality of wools other than sheep.
(v) How can the special characters like softness in the woollen fibre be obtained?
(vi) What values are displayed by Rohan?