Question

as we know that oxygen is the basic component for fire and we also know that their is no oxygen present on the sun. Then how the tremendous blasts occurs on sun every day?

Answer 1

The sun doesn't need oxygen. The sun is not a fire.

A fire is what you get during a chemical process—-something combines with oxygen to produce heat.

The sun is not a chemical process, it's a nuclear process.

A coal-burning power plant needs oxygen because it burns coal to make heat. A nuclear power plant does not need oxygen because it uses a nuclear reaction to make heat. There's no fire in a nuclear reactor; you're not burning anything.

Same with the sun. The sun uses a different nuclear reaction (fusion rather than fission), but like a nuclear power plant, nothing is burning.