Synthetic Fibres and Plastics
Multiple Choice Questions
Question 1: Which of the following is an example of animal fibre?
Answer: (c) Silk
Question 2: Nylon was discovered in which year?
Answer: (a) 1931
Question 3: Which of these is an example of plastic?
Answer: (d) Polythene
Question 4: Polywool is a mixture of which substances?
- Polyester + wool
- Polythene + Wool
- Polycarbonate + wool
- Polyester + wool + cotton
Answer: (a) Polyester + wool
Question 5: Plastic bags are generally made from which plastic?
Answer: (b) Polythene
Question 6: Thermoplastic is used for making which of the following?
- Electric switches
- Oven proof containers
- Cooking utensils
Answer: (d) Toys
Question 7: Which material is used for making bottles and jars?
Answer: (a) PET
Very Short Answer Type Questions
Question 1: Define synthetic fibre?
Answer: Fibre which is made by humans is called synthetic fibre.
Question 2: Define polymer?
Answer: A chain of a particular chemical substance is called a polymer.
Question 3: What is the component of polyester?/p>
Question 4: What is the full form of PET?
Answer: Poly Ethylene Terephthalate
Question 5: What is the full form of PVC?
Answer: Polyvinyl Chloride
Question 6: Which synthetic fibre is also known as ‘poor man’s silk’?
Question 7: Which synthetic fibre is also known as artificial wool?
Question 8: Define thermoplastic?
Answer: A plastic which can be easily bent and reshaped is called thermoplastic.
Question 9: Define thermosetting plastic?
Answer: A plastic which cannot be bent or reshaped is called thermosetting plastic.
Question 10: What do you understand by biodegradable material?
Answer: A material which can be decomposed by microbes is called a biodegradable material.
Question 11: What do you understand by non-biodegradable material?
Answer: A material which cannot be decomposed by microbes is called a non-biodegradable material.