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Question

Which of these types of chemical reactions is NOT a redox reaction?

A
Decomposition into elements
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B
Single replacement
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C
Double replacement
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D
Combustion
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E
Synthesis of two eiements
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Solution

The correct option is D Double replacement
In double displacement reactions, two ionic species interact producing products.
It is not a redox reaction as there is no change in oxidation states i.e no oxidation and reduction.
Thus, it is not a redox reaction.

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