Plastic toys, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires and plastic chairs can be recycled as these are the thermoplastic. Telephone instruments, cooker handles and electrical switches cannot be recycled as these are thermosetting plastics. https://www.tiwariacRead more
Plastic toys, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires and plastic chairs can be recycled as these are the thermoplastic.
Telephone instruments, cooker handles and electrical switches cannot be recycled as these are thermosetting plastics.
Bakelite (a thermosetting plastics) is a poor conductor of heat and electricity. So, it is used for making Electric plugs, switches, plug boards, etc. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
Bakelite (a thermosetting plastics) is a poor conductor of heat and electricity. So, it is used for making Electric plugs, switches, plug boards, etc.
Melamine (a thermosetting plastics) resists fire and can tolerate heat better than other plastics. So, it is used for making Saucepan handles, which resist fire. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
Melamine (a thermosetting plastics) resists fire and can tolerate heat better than other plastics. So, it is used for making Saucepan handles, which resist fire.
Difference between the thermoplastic and thermosetting plastics: Thermoplastic- 1. Plastic which gets deformed easily on heating and can be bent easily are known as thermoplastics. 2. Polythene and PVC are some of the examples of thermoplastics. 3. These are used for manufacturing toys, combs and vaRead more
Difference between the thermoplastic and thermosetting plastics:
Thermoplastic-
1. Plastic which gets deformed easily on heating and can be bent easily are known as thermoplastics.
2. Polythene and PVC are some of the examples of thermoplastics.
3. These are used for manufacturing toys, combs and various types of containers.
Thermosetting plastics-
1. Plastics which when moulded once, cannot be softened by heating. These are called thermosetting plastics.
2. Two examples are Bakelite and Melamine.
3. Bakelite is used for making electrical switches, handles of various utensils, etc. Melamine is used for making floor tiles, kitchenware and fabrics which resist fire.
Plastic containers are favoured for storing food for the following reasons: • Plastic containers are light weight so they are easy to handle. • The price of plastic containers is very less as compared to other containers. • They have good strength. • Plastic containers are durable. https://www.tiwarRead more
Plastic containers are favoured for storing food for the following reasons:
• Plastic containers are light weight so they are easy to handle.
• The price of plastic containers is very less as compared to other containers.
• They have good strength.
• Plastic containers are durable.
Categorise the materials of the following products into ‘can be recycled’ and ‘cannot be recycled’: Telephone instruments, plastic toys, cooker handles, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires, plastic chairs and electrical switches.
Plastic toys, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires and plastic chairs can be recycled as these are the thermoplastic. Telephone instruments, cooker handles and electrical switches cannot be recycled as these are thermosetting plastics. https://www.tiwariacRead more
Plastic toys, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires and plastic chairs can be recycled as these are the thermoplastic.
Telephone instruments, cooker handles and electrical switches cannot be recycled as these are thermosetting plastics.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
See lessExplain why Electric plugs/switches/plug boards are made of thermosetting plastics.
Bakelite (a thermosetting plastics) is a poor conductor of heat and electricity. So, it is used for making Electric plugs, switches, plug boards, etc. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
Bakelite (a thermosetting plastics) is a poor conductor of heat and electricity. So, it is used for making Electric plugs, switches, plug boards, etc.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
See lessExplain why Saucepan handles are made of thermosetting plastics.
Melamine (a thermosetting plastics) resists fire and can tolerate heat better than other plastics. So, it is used for making Saucepan handles, which resist fire. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
Melamine (a thermosetting plastics) resists fire and can tolerate heat better than other plastics. So, it is used for making Saucepan handles, which resist fire.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
See lessExplain the difference between the thermoplastic and thermosetting plastics.
Difference between the thermoplastic and thermosetting plastics: Thermoplastic- 1. Plastic which gets deformed easily on heating and can be bent easily are known as thermoplastics. 2. Polythene and PVC are some of the examples of thermoplastics. 3. These are used for manufacturing toys, combs and vaRead more
Difference between the thermoplastic and thermosetting plastics:
Thermoplastic-
1. Plastic which gets deformed easily on heating and can be bent easily are known as thermoplastics.
2. Polythene and PVC are some of the examples of thermoplastics.
3. These are used for manufacturing toys, combs and various types of containers.
Thermosetting plastics-
1. Plastics which when moulded once, cannot be softened by heating. These are called thermosetting plastics.
2. Two examples are Bakelite and Melamine.
3. Bakelite is used for making electrical switches, handles of various utensils, etc. Melamine is used for making floor tiles, kitchenware and fabrics which resist fire.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
See lessExplain why plastic containers are favoured for storing food.
Plastic containers are favoured for storing food for the following reasons: • Plastic containers are light weight so they are easy to handle. • The price of plastic containers is very less as compared to other containers. • They have good strength. • Plastic containers are durable. https://www.tiwarRead more
Plastic containers are favoured for storing food for the following reasons:
• Plastic containers are light weight so they are easy to handle.
• The price of plastic containers is very less as compared to other containers.
• They have good strength.
• Plastic containers are durable.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-3/
See less