Combing is a method to prepare woollen fibres for spinning the yarn. Answer: Synthetic fibres have replaced natural fibres for most uses. It has helped in conservation of forests. What are synthetic fibres? Many natural fibres come from plants and hence plants need to be cut to obtain these fibres. It has resulted in reducing our dependency on natural fibres. Recommended Videos B&I offers the finest selection of finishes to customize your molded dash kit and dash kit with. From real wood to real carbon fiber to camo and even your own paint-code. The fibres obtained from plants and animals are called natural fibres. The DASH diet is rich in grains, fruits, vegetables and low-fat dairy products. Ans. It limits total fat, trans fat and saturated fat, and provides plenty of fiber, potassium, calcium and magnesium. Explain with examples. Students can solve NCERT Class 8 Science Synthetic Fibres and Plastics MCQs Pdf with Answers to know […] It is low in total fat, saturated fat, and cholesterol. The DASH diet and heart health. For example, cotton from cotton bolls, jute from jute plant, silk from cocoon of silkworm and wool from hair of animals like sheep or goat. What are natural fibres? 21.Comperatively less durable than synthetic fiber. Q.3. Less demand for natural fibres means there is reduced need to cut trees. For example, the original DASH trial, published in the New England Journal of Medicine in 1997, found that the DASH diet reduced blood pressure in adults with borderline high blood pressure (hypertension). Several components of the DASH diet have been linked to improved cholesterol level: getting lots of fiber (in this case from fruits and vegetables, whole grains, nuts, and beans), eating fish and leaner cuts of meat, and limiting sweets and refined carbohydrates. Ans. The natural fleece or hair of sheep (or goats) is white, brown or black in colour. 21.Synthetic fibers are more durable than natural fiber. (5) Combing. and do not require fiber formation or reformation are classed as natural fibers. Q.4. The DASH diet also limits sodium to between 1,500 and 2,300 milligrams a day. 22.The use of natural fibers are limited than synthetic fiber. This eating plan also includes whole grain products, fish, poultry and nuts. On the other hand, fibres that are obtained from the animals are known as animal fibres. All fibers which come from natural sources (animals, plants, etc.) Examples of natural fibres are cotton and jute whereas examples of synthetic fibres are: nylon, polyester, etc. Some of the natural fibers like vegetable fibers are obtained from the various parts of the plants. This is done by using combs having metal teeth. 800.382.6164 Fibres that are obtained from the plants are known as plant fibres. For example, a 2001 study in The New England Journal of Medicine found that limiting sodium and following a DASH diet resulted in even bigger reductions in blood pressure than doing DASH alone. The white woollen fibres obtained by sorting can be dyed in different colours. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. 20.Natural fiber has a great demand as humans wear. It is rich in fruits, vegetables, and fat free or low fat dairy products. The natural fibers are vegetable, animal, or mineral in origin. Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 3 Synthetic Fibres and Plastics. DASH Eating Plan The Dietary Approaches to Stop Hypertension (DASH) eating plan is a way of eating that helps lower high blood pressure. 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