NCERT Solutions for class 6 ScienceChapter - 3: Fibre to Fabric1. Classify the following fibres as natural or synthetic: Nylon: Synthetic Fibre Wool: Natural Fibre Cotton: Natural Fibre Silk: Natural Fibre Polyester: Synthetic Fibre Jute: Natural Fibre Natural fibres: Fibres obtained from the plants and animals are called natural fibres. Synthetic fibres: Fibres made from the chemical substances are called synthetic fibres. 2. State whether the following statements are true or false: a) Yarn is made from fibres. Answer: True Explanation: Yarn is made from the combination of fibres. b) Spinning is a process of making fibres. Answer: False Explanation: Spinning is a process of making yarns. c) Jute is the outer covering of coconut. Answer: False Explanation: Jute is obtained from the stem of a jute plant. d) The process of removing seed from cotton is called ginning. Answer: True Explanation: The ginning process helps in removing seeds from the cotton. This process is done by hand. e) Weaving of yarn makes a piece of fabric. Answer: True Explanation: The process of arranging two sets of yarn together to make a fabric is known as weaving. f) Silk fibre is obtained from the stem of a plant. Answer: False Explanation: Silk is obtained from the cocoon of silkworm. g) Polyester is a natural fibre. Answer: False Explanation: Polyester is made from the chemical substances. Hence, it is a synthetic fibre. 3. Fill in the blanks:
4. From which parts of the plant cotton and jute are obtained? Answer: Cotton is obtained from the cotton balls. The fibre from the seeds is separated by combing. Jute is obtained from the stem of a jute plant. 5. Name two items that are made from coconut fibre. Answer: Brushes and Doormats are the two items that can be made from the coconut fibre. 6. Explain the process of making yarn from fibre. Answer: Fibres are the thin strands of threads that are obtained from the plants and animals. Fibres such as cotton and jute are obtained from the plants, while wool and silk are obtained from the animals. These fibres are further combined to form a yarn. Practice MCQsLet's discuss some multiple choice questions. 1. Cotton, wool, and silk are classified as:
Answer: (b) Fabrics Explanation: Cotton, wool, and silk are classified as fabrics. 2. The fibres obtained from the plants and animals are called:
Answer: (a) Natural fibres Explanation: The fibres obtained from the plants and animals are called as natural fibres. Fibres made from the chemical substances are called synthetic fibres. 3. Which of the following is a synthetic fibre?
Answer: (c) Polyester Explanation: Fibres made from the chemical substances are called synthetic fibres. Polyester is the synthetic fibre, while wool, silk, and cotton is the natural fibres. 4. The process of separating fibres from the seeds by combing is known as:
Answer: (b) Ginning Explanation: Ginning: It is the process of separating fibres from the seeds by combing Weaving: It is the process of arranging two sets of yarn together to make a fabric. Spinning: It is the process of making yarn from fibres. 5. The process of arranging two sets of yarn together to make a fabric is known as:
Answer: (a) Weaving Explanation: Ginning: It is the process of separating fibres from the seeds by combing Weaving: It is the process of arranging two sets of yarn together to make a fabric. Spinning: It is the process of making yarn from fibres. 6. The two processes known to make the fabric from yarn are:
Answer: (b) Knitting and weaving Explanation: Ginning: It is the process of separating fibres from the seeds by combing Weaving: It is the process of arranging two sets of yarn together to make a fabric. Spinning: It is the process of making yarn from fibres. Knitting: It is the process of arranging the sets of yarn in the form of interlocking loops. 7. The process to make fibres from the cotton roll is known as:
Answer: (d) Ginning Explanation: Ginning is the process of separating fibres from the seeds by combing. 8. Weaving of fabric is performed on:
Answer: (c) Looms Explanation: Weaving of fabric is performed on looms, which are either operated by hand or power. |