Write balanced chemical equation for the reactions that occur when (a) steam is passed over red hot iron. (b) natural gas is burnt in air. (c) glucose reacts with oxygen in the cells of our body and provides energy.

Chemical Reactions and Equations

Balanced Chemical Equations

Official Answer

The balanced chemical equations for the given reactions are: (a) $4Fe + 6H_2O ightarrow 2Fe_2O_3 + 6H_2$ (b) $CH_4 + 2O_2 ightarrow CO_2 + 2H_2O$ (c) $C_6H_{12}O_6 + 6O_2 ightarrow 6CO_2 + 6H_2O + Energy$

balanced chemical equationskeletal equationreactantsproducts

Marking Scheme

13 marks

Hint

To balance a chemical equation, we need to make sure that the number of atoms of each element is the same on both the reactant and product sides.

Quick Oral Answer

Analysis & Explanation

To solve this problem, we need to write the balanced chemical equations for the given reactions. We start by writing the skeletal equation for each reaction, and then balance the equation by making sure that the number of atoms of each element is the same on both the reactant and product sides.

Common Mistakes

1not balancing the equation
2not writing the correct skeletal equation

Interesting Facts

The balanced chemical equation for the combustion of natural gas is used in the production of electricity in power plants.

The balanced chemical equation for the reaction between glucose and oxygen in the cells of our body is used in the production of energy for the body.

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Frequently Asked Questions

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

This question carries 3 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 "Balanced Chemical Equations" from CBSE Class 10 Science.

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

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