True or False State whether the given statements are true or false. Artificial silk is another name for silk. Rayon synthesised for the first time in England. Soln: i) True ii) False- Synthetic fibres … Answer: a) True b) False c) False d) True e) True f) False g) False. f) Silk fibre is obtained from the stem of the plant. c) We get jute fibres from the outer layer of a stem of the jute plant. Explanation: a)& b) Process of making yarn from fibres is called spinning. Answer: Natural Fibres : wool, cotton, silk, jute. Rayon is a natural fibre. Which of the following fibre is natural polymer: (a) rayon (b) cotton (c) polyester (d) polythene. 6. (iv) Most of the plastics are biodegradable. Synthetic Fibres : nylon, polyester. 4.Question. Question 1 Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute. (False) (g) Polyester is a natural fiber. (a) True (b) False; The process of making yarn from fibres is called spinning. Question 2 State whether the following statements are true or false: a) Yarn is made from fibres. D-opacity. Answer. (b) Spinning is a process of making fibres. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. (iii) It is risky to wear synthetic clothes while working in the kitchen. Answer. Question 2. Polyester is the strongest synthetic fibre. Polyester fibres are used for making hand knit sweaters. (ii) Synthetic fibres do not melt on heating. (b) Animals fibers are silk and wool. 5. False. From which parts of the cotton and jute are obtained? Answer ... State whether the following statements are True or False: Question 1. g) Polyester is a natural fibre. 7. Answer : (i) Natural fibres: Wool, silk, cotton, jute. (c) False; Jute fibre is obtained from the stem of jute plant. True. (i) The fabric terry wool is obtained by mixing terylene and wool. True) (e) Weaving yarn makes a piece of fabric. (True) (f) Silk fiber is obtained from the stem of a plant. Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. True or False: Polyester was the first synthetic fiber. fill in the blanks: Answer. Answer. Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute. Rayon is made from cellulose obtained from wood pulp. Natural fibers, such as wool or cotton, will give a better protection when welding than synthetic fibers like polyester. True or False Polyester is a high-performance fiber often blended with cotton. IV. (False) 3.Question. 4. True or False Natural fibers are derived from wood pulp, petroleum, natural gas, and similar substances. 2. Rayon is the first man-made cellulose fibre. Q. True. Also, write false statements in their correct form. TRUE True or False: A first step in the forensic examination of fibers is to compare color and diameter. 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