Chemistry
Grade-6
Easy
Question
Reaction between oxygen and hydrogen produces a lot of heat energy. This is exploited in which of the following uses of oxygen?
Hint:
Hydrogen is a highly reactive fuel. hydrogen molecules violently react with oxygen when the existing molecular bonds break and new bonds are formed between oxygen and hydrogen atoms.
The correct answer is:
The reaction between oxygen and hydrogen produces a lot of heat energy. This is exploited in the welding of iron.
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