Define oxidation. Identify and name the substance oxidised in the following reaction:

$CuO + H_2 → Cu + H_2O$

Chemical Reactions and Equations

Oxidation

Official Answer

Oxidation is the process of addition of oxygen or removal of hydrogen from a substance.

oxidationhydrogencopper oxide

Marking Scheme

1/2 for definition
2/1 for identification and naming

Hint

Identify the substance that is gaining oxygen or losing hydrogen.

Quick Oral Answer

Oxidation is the process of addition of oxygen or removal of hydrogen from a substance. In the given reaction, hydrogen is being oxidised.

Analysis & Explanation

In the given reaction, $CuO + H_2 \rightarrow Cu + H_2O$ , hydrogen is being added to copper oxide, so copper oxide is being reduced. Hydrogen is losing electrons and getting oxidised. Therefore, the substance oxidised is hydrogen.

Common Mistakes

1confusing oxidation with reduction

Interesting Facts

oxidation is an important process in many chemical reactions

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2025?

This question carries 2 marks in the CBSE Class 10 Science 2025 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Oxidation" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2025 paper?

This is a Very Short Answer question from Section B in the CBSE Class 10 Science 2025 paper.