Single Answer MCQ
Q-00039842
What happens in a decomposition reaction?
1
A gas is evolved
2
One compound breaks down into simpler substances
3
Two or more substances combine
4
Elements are replaced
Answer and Solution
Answer
B. One compound breaks down into simpler substances
Solution:
A decomposition reaction involves one compound breaking down into two or more simpler substances. For instance, water decomposing into hydrogen and oxygen by electrolysis.
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