Q3
1 markMCQSection A

Study the following chemical reaction : 2Na(s)+2H2O(l)⟶2NaOH(aq)+H2(g)↑2\mathrm{Na(s)} + 2\mathrm{H}_2\mathrm{O(l)}\longrightarrow 2\mathrm{NaOH(aq)} + \mathrm{H}_2(\mathrm{g})\uparrow. The reducing agent in this reaction is :

Chemical Reactions and Equations
Chemical Reactions

Options

(a)Na
(b)H2O\mathrm{H}_2\mathrm{O}
(c)NaOH
(d)H2\mathrm{H}_2
Official Answer

Na

reducing agentsodiumoxidation

Marking Scheme

  • 11 mark

Hint

Identify the substance that loses electrons in the reaction

Quick Oral Answer

The reducing agent in the reaction is sodium, as it loses electrons to form sodium hydroxide

Analysis & Explanation

The reducing agent in the reaction is Na, as it loses electrons to form NaOH

Common Mistakes

  1. 1Confusing oxidation and reduction
  2. 2Incorrectly identifying the reducing agent

Interesting Facts

Sodium is a highly reactive metal

Oxidation and reduction reactions are important in many industrial processes

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 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 "Chemical Reactions" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2023 paper.