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प्रश्न
Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.
उत्तर
No. The handle and bristles of a tooth brush should be made of different materials. The handle of a toothbrush should be hard and strong, while the bristles should be soft and flexible.
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संबंधित प्रश्न
Fill in the blanks with appropriate words.
Like synthetic fibres, plastic is also a _______
Distinguish between.
Man made material and natural material.
Distinguish between
Thermoplastic and thermosetting plastic.
True or False
A lot of plastic pollutes our environment.
A plastic bag dumped in the soil stays without breaking down for 500 years. If a new generation starts in every 30 years, how many generations would it take to see the plastic bag finally broken down?
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%.
Edmund Alexander Parkes was the creator of the first plastic called ______.
Polycarbonate (PC) plastic contains ______.
Answer the following by rearranging the jumbled letters :
One-time use plastics are also known as ______ plastics.
áwyrhotwa
Answer the following by rearranging the jumbled letters :
Expanded polystyrene is commercially known as ______.
mthreolco
