Why are viruses different from other microorganisms?
Updated 1/12/2026
What do you mean by fluid friction? How can fluid friction be reduced?
Updated 1/11/2026
State the difference between burning of a candle and burning of a fuel like coal
Updated 1/11/2026
When the two surfaces are pressed harder, friction increases. Explain why?
Updated 1/11/2026
It is observed at petrol pumps and airports, that hydrocarbon fire extinguishers are used, instead of soda-acid fire extinguisher. Give reasons why.
Updated 1/11/2026
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