Statement-A :Stars are made up of hydrogen
Statement-B :Inert gases are filled in electrical bulbs
Statement-C :Graphite is used as lubricant

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All The Statements A ,B and C are correct

A,B are incorrect and C is correct

A,B are correct and C is incorrect

answer is A.

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Detailed Solution

There is mainly two elements are present in the sun and the stars. They are : Hydrogen(H) and Helium(He).

The gases used in light bulbs are known as inert gases. An inert gas is a non-reactive and extremely resistance to chemical change. Due to inert nature, Argon (Ar) and Neon (Ne) do not allow a filament to catch fire in a electric bulb.

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