Synthetic Fibres and Plastics (Class - VIII)
| Description: Synthetic Fibers and Plastics | |
| Number of Questions: 15 | |
| Created by: Divya Kade | |
| Tags: Synthetic Fibers and Plastics Equations of Motion Distance-Time Graph and its Interpretation Fundamental Definitions Related to Motion Velocity-Time Graph and its Interpretation Uniform Circular Motion Synthetic Fibres and Plastics Polymers and Types of Synthetic Fibres Properties of Synthetic Fibres and their Applications Characteristics and Uses of Plastics Plastics and their Types |
Which of the following polymers is not made by humans in an industrial process?
Which of the following statements is/are false?
a. Cellulose is a polymer that is made up of a large number of small glucose molecules joined one after the other. b. Wood contains a very less amount of cellulose polymer. c. The small molecules that join together to form a polymer are called monomers.
Which of the following man-made fibers is made from a natural material called cellulose?
Which of the following is not a property of nylon?
Which of the following fiber threads is actually stronger than a steel wire of similar thickness?
Which of the following statements is/are false?
a. Nylon is not attacked by moths and ordinary chemicals. b. Rayon fiber is chemically identical to cotton, but it has a shine like silk. c. Nylon fibers have low abrasion resistance, so they are very durable.
Which of the following is not a characteristic of synthetic fibers?
Polyester is a synthetic fiber in which the polymer units are linked by ester groups. Which of the following is not a property of polyester?
Which of the following is a fire-resistant plastic and is used to coat the uniforms of firemen?
Which of the following statements is/are false?
a. PET is naturally colourless with high transparency. b. Terrycot is a mixture of acrylic and cotton, and terrywool is a mixture of acrylic and wool. c. Nylon is made up of repeating units of a chemical called amide.
Which of the following plastics is used for making electric switches, plugs and sockets?
Which of the following arrangements is the correct order of fabrics in their decreasing strength?
Which of the following statements is/are false?
a. The articles made of thermoplastics cannot be recycled whereas that made of thermosetting plastics can be recycled. b. A material that is not easily decomposed by natural processes is called non-biodegradable. c. The manufacturing of rayon contributes to deforestation.
A plastic that can be softened repeatedly by heating and can be moulded into different shapes again and again is called a thermoplastic. Which of the following plasctics are thermoplastics?
a. Polythene b. Bakelite c. PVC d. Melamine
In which of the following plastics are the long polymer chains cross-linked with one another?