Answer: True; False; False; True; True; False; False; Question: Fill in the blanks: Plant fibres are obtained from _____ and _____ . Synthetics wrinkle easily. A. Rayon. CBSE CBSE Class 6. Answers: 1 Show answers Another question on Health. Nylon is a synthetic fibre. It has the same molecular structure as cellulose. (A) Yarn is made from fibres. Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. In the acid bath, the solution is regenerated (that's where that greenwashed term comes from) back into cellulose fiber aka rayon. True / False ii) Viscose rayon was the first truly man-made fibre. • Classify the following fibres as man-made and natural: • (i) Nylon (ii) Wool (iii) Cotton (iv) Silk (v) Polyester (vi) Rayon(vii) Acrylic (viii) Jute 8. State whether the following statements are ‘true’ or false’: (a) Yam is made from fibres. Answer: False, silk fibre is made up of a protein. You can call it a synthetic fibre or a man made natural fibre. I think now that you understand the viscose rayon process you would agree it's not natural at all! Rayon is a synthetic fibre made from a natural source : wood pulp. D. Is a good conductor of electricity. True or False: The age and sex of the individual from whom a hair sample has been taken can be determined through an examination of the hair's morphological features. B. Terylene. Weaving of yarn makes a piece of fabric. Rayon is not considered as a synthetic fibre as it is regenerated from cellulose. State whether the following statements are true or false. The national labor relations act is also called the wagner act.true or false? False… rayon false facts. Animal fibres are _____ and _____ . Any plant or tree could be used as the cellulose source – including bamboo – but the fiber that is created is rayon. As an inexpensive fiber, rayon has often been used in low-end,poorly constructed … Rayon is significantly heavier than cotton. rayon nylon polyester silk? Know answer of objective question : Which of the following is not a natural fibre?. The most prevalent natural plant fiber is _____. Answer. A viscous solution of cellulose; A synonym of rayon; A specific term for viscose rayon — rayon made using the viscose process 6. True False 0 points QUESTION 6 Rayon is a synthetic fiber, because it is manufactured from manufactured resources like cellulose present in wood pulp. Synthetic fibres are costlier than natural fibres. True. Classify the following fibres as man-made and natural: (i) Nylon (ii) Wool (iii) Cotton (iv) Silk (v) Polyester (vi) Rayon (vii) Acrylic (viii) Jute 3. True. The assertion is true but the reason is false. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. … It is not a natural fiber, yet it is not synthetic. Answer: True. Silk is a natural carbohydrate fibre. Polyester is a natural fibre. I. Artificially prepared synthetic fibre which resembles silk is known as terylene. Natural sources: Cotton, jute, silk, wool etc. true. (F) Silk fibre is obtained from the stem of a plant. PLA. (ii) Which is a natural fibre? Silk fiber is obtained from the stem of a plant. Viscose can mean:. State whether the following statements are True / False: i) Cotton is a man-made fibre. Fibre to Fabric Class 6 MCQs Questions with Answers. Rayon is different from synthetic fibre because. It is a fiber formed by regenerating natural materials into a usable form. iii. State whether the following are true or false and correct the false statements: (i) Fibre is the basic unit of all fabrics. Answer: (A) Is wrinkle free. II. 2. True / False iv) A staple fibre is of infinite length. • … Identify the synthetic fibre which resembles wool. Shearing is usually done in summer season-True. Is a natural fibre. Hence, though both are suitable for textile industry, nylon is more popular in making dresses and uniforms than rayon. So, what other false facts are there about rayon? True / False iii) Coir is a cellulosic fibre. Rayon is a regenerated cellulose fiber that is made from natural sources of cellulose, such as wood and related agricultural products. Question 8. Whereas nylon or polyester, fibers are purely synthetic polymers, made entirely from chemicals. Used in blends as the cellulose source – including bamboo – but the reason is true and... Long chain molecules called -- -- - man-made fibre Artificially prepared synthetic fibre which resembles silk is as... Appearance and is often used in low-end, poorly constructed … 1 for preparing cooking oil reasons why viscose was! 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