Every question from this NCERT chapter, with a detailed explanation.
Consider the following statements regarding the cultivation of cotton: 1. Cotton plants are usually grown in places having black soil. 2. A cold climate is most suitable for the growth of cotton plants. 3. The seeds of the cotton plant are technically referred to as cotton bolls. Which of the statements given above is/are correct?
With reference to the processing of cotton, consider the following statements: 1. Ginning is the process of separating fibres from the seeds by combing. 2. Ginning can only be done by machines and not by hand. 3. The cotton bolls burst open after maturing to reveal seeds covered with fibres. Which of the statements given above is/are correct?
Consider the following statements regarding the Jute plant: 1. Jute fibre is obtained from the leaves of the jute plant. 2. It is cultivated primarily during the rainy season. 3. In India, it is mainly grown in West Bengal, Bihar, and Assam. Which of the statements given above is/are correct?
With reference to the harvesting and processing of Jute, consider the following statements: 1. The jute plant is normally harvested when it is at the flowering stage. 2. The stems of harvested plants are dried in the sun immediately to separate fibres. 3. The fibres are separated from the rotted stems exclusively by mechanical threshers. Which of the statements given above is/are correct?
Consider the following statements regarding the process of Spinning: 1. It is the process of making yarn from fibres. 2. During this process, fibres are simply glued together without any twisting. 3. Spinning of yarn on a large scale is done with the help of spinning machines. Which of the statements given above is/are correct?
With reference to devices used for spinning, consider the following statements: 1. A takli is a power-operated device used for spinning. 2. The charkha was popularised by Mahatma Gandhi to promote homespun cloth. 3. Spinning of yarn on a large scale is done with the help of spinning machines. Which of the statements given above is/are correct?
Consider the following statements regarding the process of Weaving: 1. It involves arranging a single yarn to make a fabric. 2. Weaving of fabric is done on looms. 3. Looms are exclusively hand-operated devices and cannot be power-operated. Which of the statements given above is/are correct?
With reference to Knitting, consider the following statements: 1. In knitting, a single yarn is used to make a piece of fabric. 2. If a yarn is pulled from a torn knitted sock, the fabric remains intact without unravelling. 3. Knitting can be done by hand as well as on machines. Which of the statements given above is/are correct?
With reference to Flax, consider the following statements: 1. Flax is a plant that yields synthetic fibres. 2. In ancient Egypt, it was cultivated near the river Nile. 3. It was used for making fabrics in ancient times. Which of the statements given above is/are correct?
Consider the following statements regarding the separation of fibres: 1. Ginning separates cotton fibres from seeds. 2. Retting is the process used to separate silk fibres from the cocoon. 3. Shearing is the process used to separate silk fibres from the cocoon. Which of the statements given above is/are correct?
Consider the following statements regarding the conversion of fibre to fabric: 1. Fibres are converted to yarn by spinning. 2. Yarn is converted to fabric by spinning. 3. Weaving and knitting are the two main processes to make fabric from yarn. Which of the statements given above is/are correct?
With reference to the cotton plant, consider the following statements: 1. It is grown as an annual crop in the winter season only. 2. Its fruits are about the size of a lemon. 3. The seeds are covered with cotton fibres. Which of the statements given above is/are correct?
Consider the following statements regarding the process of making yarn: 1. It involves twisting fibres. 2. Twisting separates the fibres to form a yarn. 3. A simple device called 'takli' is used for weaving fabric. Which of the statements given above is/are correct?
With reference to the "Charkha", consider the following statements: 1. It is a hand-operated device used for spinning. 2. It was used as a symbol to promote imported mill-made cloth. 3. It produces homespun yarn. Which of the statements given above is/are correct?
With reference to the geographical distribution of Jute in India, consider the following statements: 1. It is mainly grown in Rajasthan. 2. It is mainly grown in Bihar. 3. It is mainly grown in Assam. Which of the statements given above is/are correct?
Consider the following statements regarding the appearance of a cotton field: 1. When ready for picking, it looks like a field covered with snow. 2. This appearance is due to the white flowers of the cotton plant. Which of the statements given above is/are correct?
With reference to the extraction of fibres, consider the following statements: 1. Cotton fibres are picked from the stem of the plant. 2. Jute fibres are separated from the stem by hand after rotting. 3. Wool is obtained by ginning the fleece. Which of the statements given above is/are correct?
With reference to the process of "Retting" (implied in Jute processing), consider the following statements: 1. It involves immersing stems in water. 2. It prevents the stems from rotting. 3. It helps in the separation of fibres. Which of the statements given above is/are correct?
Consider the following statements regarding the relationship between fibre, yarn, and fabric: 1. Fabric is made directly from raw fibres without converting them to yarn. 2. Yarn is made of fibre. 3. Fibres are the fundamental units of fabric. Which of the statements given above is/are correct?
With reference to the cotton boll, consider the following statements: 1. It is the root of the cotton plant. 2. It bursts open upon maturing. 3. It contains seeds covered with silk fibres. Which of the statements given above is/are correct?
With reference to the burning of paper and cotton, consider the following statements: 1. Both give a similar odour when burnt. 2. This similarity suggests that paper is made from animal proteins. Which of the statements given above is/are correct?
The process of separating cotton fibres from seeds by combing is technically referred to as:
Which one of the following processes involves the twisting of fibres to form a yarn?