Refer to the two statements given below and choose the CORRECT option. Statement A: A decomposition reaction occurs when a single compound breaks down into two or more simpler substances. Statement B: Decomposition reactions always require the presence of oxygen.
Statement A is correct but B is incorrect.
Statement A is correct: a decomposition reaction is one in which a single compound breaks down into two or more simpler substances.
Statement B is incorrect: many decomposition reactions (like heating of calcium carbonate) occur without the presence of oxygen.
Hence, the correct answer is Statement A is correct but B is incorrect (D).
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Important Questions from Chemical Reaction
Which of the following statement is/are true?
I. In physical change new substance is formed. substance is formed.
II. In chemical change no new substance is formed.
Which of the following cells involves similar chemical reactions?
The information not obtained from balanced chemical equation is
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Which of the following compound is responsible for tarnishing of silver?
