Advertisements
Advertisements
प्रश्न
Describe an activity to show that thermoplastic is a poor conductor of electricity.
Advertisements
उत्तर
We will design a circuit to see that thermoplastics are poor conductors of electricity. We need a bulb, some wires, a battery, a piece of metal, and a plastic pipe. Set up the circuit first with the metal and then with the plastic pipe (as shown in the figure). After you switch on the current, you will observe that the bulb glows in the former case. In the latter case, the bulb does not glow. Hence, a plastic pipe (which is a thermoplastic) is shown to be a poor conductor of electricity.
संबंधित प्रश्न
Plastic shows ______ property, hence it can be moulded to any shape.
Motor cars are coated with ______.
Who is my partner?
| 'A' column | 'B' column |
| a. Lead glass | i. Plates |
| b. Bakelite | ii. Mattresses |
| c. Thermocol | iii. Electric bulb |
| d. Optic glass | iv. Electric switch |
| e. Polypropylene | v. Lens |
Which measures will you arrange to minimize the environmental problems arising due to non-degradable plastic?
Can you replace the following packaging material with those which can be recycled or reused.
Milk packets of polythene.
A good application of plastic is the use of ______
True or False
Refuse (avoid) is the best way to manage plastic.
Read the following information and convert them into a graph to compare the countries and the amount of plastic they use.
China contributes the highest share - that is around 28%, of the total plastic used globally. Indonesia uses 10%, both the Philippines and Vietnam use 6% each; Thailand uses 3.2%, Egypt 3%, Nigeria 2.7% and South Africa 2%.
Unscramble the jumbled word given below, related to synthetic material.
Laspict
Polycarbonate (PC) plastic contains ______.
