Fibre To Fabric - UPSC Sci & Tech Free MCQ Test with solutions

Jute is the cheapest natural fibre and is a second most widely used fibre after cotton.

• Silk cotton is a plant fibre from the KAPOK tree used for stuffing for pillows and lifejackets and insulation.
• Silk cotton tree has softwood, red flowers, a large number of seeds and smaller filaments.
• It's cotton i.e. Silk cotton is softer than regular cotton.

Jute is used for making gunny bags because it is a strong fibre and good for storing agricultural products.

Sweater is used in winter to prevent against cold. Sweater is made by wool fibres.

The fibres obtained from plants and animals are called as natural fibres such as cotton, wool, silk etc.

Silk fibre is obtained from cocoon of silk moth which is covered by silk threads.

• The process of making yarn from fibre is called spinning.
• The fibres are first drawn out from their source and then twisted into yarn.
• Two devices used in spinning are takli and charkha.

• The charkha, or spinning wheel, was the physical embodiment and symbol of Gandhi's constructive program.
• It represents Swadeshi, self-sufficiency, and at the same time interdependence, because the wheel is at the center of a network of cotton growers, carders, weavers, distributors, and users.

• Jute is a rainy season crop, cultivated before rainfall that is from March to May.
• It is harvested from June to September depending upon whether the sowings are early or late.
• Jute requires a warm and humid climate with temperature between 24 deg C to 37 deg C.
• Constant rain or water-logging is harmful.

Hence, the correct option is 'C'

Yarn is wound on big reels called ‘bobbins’. These bobbins of yam are subjected to weave for making cloth.

Sewing needle is a key tool for making clothes of all kinds either by machine or hands.

The process of pulling out seed from cotton is called as ginning as seeds are also present along with cotton fibres.

Sheep are reared for getting wool. Sheep is also important source of meat in some part of India.

We wear woollen clothes in winter because air is a poor conductor of heat and woollen clothes do not allow the transfer of body heat to the environment and keep us warm.

• Rayon is an artificial fibre, but not truly synthetic, being made from wood.
• Nylon, the first synthetic fibre in the "fully synthetic" sense of that term, was developed by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s.

The fibres obtained from animals are made up of protein while fibres obtained from plants contain cellulose.

Nylon, polyester, and acrylic are man-made fibres, while silk is a natural fibre.

Silk comes from silkworms and wool is obtained from sheep, goat and yak. Hence silk and wool are animal fibres.

Nylon and polyester are obtained from chemical substances as they are man-made fibres.

• Cotton is a natural fibre.
• Wool is not a plant fibre. 
• Jute is a plant fibre.
• Silk is a fibre obtained from cocoons of insects and is a natural fibre.