fill in the blanks: Answer. Answer ... State whether the following statements are True or False: Question 1. 4. (a) Plant fibers are obtained from cotton and jute. Soln: i) True ii) False- Synthetic fibres ⦠(b) Animals fibers are silk and wool. True) (e) Weaving yarn makes a piece of fabric. (iii) It is risky to wear synthetic clothes while working in the kitchen. Answer. Explanation: a)& b) Process of making yarn from fibres is called spinning. Answer. Rayon is made from cellulose obtained from wood pulp. TRUE True or False: A first step in the forensic examination of fibers is to compare color and diameter. True or False Polyester is a high-performance fiber often blended with cotton. (False) (g) Polyester is a natural fiber. 6. Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. c) We get jute fibres from the outer layer of a stem of the jute plant. Natural fibers, such as wool or cotton, will give a better protection when welding than synthetic fibers like polyester. (i) The fabric terry wool is obtained by mixing terylene and wool. IV. 7. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. False. Q. Question 2. (iv) Most of the plastics are biodegradable. (a) True (b) False; The process of making yarn from fibres is called spinning. From which parts of the cotton and jute are obtained? (False) 3.Question. Answer : (i) Natural fibres: Wool, silk, cotton, jute. Polyester is the strongest synthetic fibre. Answer. (True) (f) Silk fiber is obtained from the stem of a plant. Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute. Answer: a) True b) False c) False d) True e) True f) False g) False. (g) Polyester is a natural fibre. f) Silk fibre is obtained from the stem of the plant. 3. Rayon is the first man-made cellulose fibre. 1. True or False: Polyester was the first synthetic fiber. True. Rayon synthesised for the first time in England. (b) Spinning is a process of making fibres. 2. True or False PLA fibers are similar to cotton in appearance. Also, write false statements in their correct form. b) Spinning is a process of making fibres. Answer: Natural Fibres : wool, cotton, silk, jute. (c) False; Jute fibre is obtained from the stem of jute plant. State whether the following statements are true or false: (a) Yarn is made from fibres. True or False Natural fibers are derived from wood pulp, petroleum, natural gas, and similar substances. Polyester fibres are used for making hand knit sweaters. Rayon is a natural fibre. True. D-opacity. 4.Question. Synthetic Fibres : nylon, polyester. True. 5. Nylon was made in 1931. (ii) Synthetic fibres do not melt on heating. g) Polyester is a natural fibre. (ii) Synthetic fibres: Nylon, polyester. Artificial silk is another name for silk. Which of the following fibre is natural polymer: (a) rayon (b) cotton (c) polyester (d) polythene. Question 2 State whether the following statements are true or false: a) Yarn is made from fibres. True or False State whether the given statements are true or false. Question 1 Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute. Question 2. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Are true or False: ( a ) plant fibers are obtained from cotton and jute polyester was the synthetic! Given statements are true or False: a ) & b ) spinning is a process of making.... The given statements are true or False do not melt on heating statements in their correct form latest... ( False ) ( g ) polyester is a process of making fibres making from... 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