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Which of the following characters is not shown by hydrogen?

  • A.It combines with almost all metals forming hydrides
  • B.It readily combines with fluorine and chlorine
  • C.It supports combustion
  • D.It burns in air to form water

Answer: C

Hydrogen does not support combustion. It is itself combustible, burning in air to form water, but it will not keep another substance burning - a lighted splint is extinguished in hydrogen with a pop.

Oxygen supports combustion without burning itself; hydrogen does the reverse.

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