Given below is a list of chemical reactions.1. Burning octane fuel2. Forming rust in an iron pipe3. Baking a cake4. Cement hardeningWhich sequence ranks the chemical reactions in order from fastest to slowest?

Burning octane is a rapid combustion reaction, so it is the fastest. Baking a cake takes longer, while cement hardens over hours or days. Rust forms slowly over a much longer time, making the order from fastest to slowest 1, 3, 4, 2: choice D.

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