Topics from July 2020
- What happens to the fish living in the lake?
Posted by Keshav Jain on
- Can a magnet lose its power?
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- How does an underground train run?
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- Can a machine run on its own forever?
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- Why is wire gauze used while heating a glass vessel over a flame?
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- Why is the nib of a fountain pen split towards the end?
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- Why are Mach numbers used to measure the speed of aircraft especially those flying at supersonic speed?
Posted by Keshav Jain on
- When water is frozen in an ice tray, the outer part of the ice cubes that are formed is transparent but the inner core is opaque. Why?
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- What is the difference between coal and charcoal?
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- Why does the doctor expel some fluid from the injection needle before giving the injection?
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- If a nuclear bomb is exploded anywhere on Earth it affects everyone on the planet. How is that?
Posted by Keshav Jain on