Physics
The energy obtained from atoms is known as ________

Nuclear energy
Solar energy
Chemical energy
Heat energy

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Physics
Why does bleeding occur through the nose in high mountainous regions ?

The blood pressure fluctuates and finally decreases drastically
The pressure of blood in capillaries is greater than the outside pressure
The blood pressure of a person increases at high altitudes
The pressure at high altitudes is greater than that on the plains

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Physics
Rainbow is due to

refraction and reflection of sunlight by water droplets
diffusion of sunlight through water droplets
absorption of sunlight in minute water droplets
ionisation of water deposits

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