What is the correct order of the processes in which hydrogen is removed from a substance and then added to a substance?
Answer and explanation
Correct answer: Oxidation and reduction
In the classical description of redox processes, removal of hydrogen from a substance is oxidation, while addition of hydrogen is reduction. The question asks for these processes in that exact order: first hydrogen is removed, so oxidation occurs; then hydrogen is added, so reduction occurs. Consequently, option D is correct. Option A contains the same two terms but reverses their order, and the other options name unrelated reaction types.
Frequently asked questions
What is the correct answer to this question?
Oxidation and reduction
Why is this the correct answer?
In the classical description of redox processes, removal of hydrogen from a substance is oxidation, while addition of hydrogen is reduction. The question asks for these processes in that exact order: first hydrogen is removed, so oxidation occurs; then hydrogen is added, so reduction occurs. Consequently, option D is correct. Option A contains the same two terms but reverses their order, and the other options name unrelated reaction types.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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