Why do we get instant energy from glucose?

Which should be given to an athlete for instant energy ?

Why do we need to separate different components of a mixture? Give two examples.

Why do we think it is necessary to fasten your seat belts while travelling in your vehicle.

When a beam of white light is passed through a triangular glass prism, it gets dispersed into its seven colour components. Why do we get these colours ? In the given figure, the colours 3 and 4 represent the extreme components of the spectrum. Identify 3 and 4.

Why do transition metals from alloy ?

Why do we get dew on the surface of a cold soft drink bottle kept in open air? (AS_1)