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Chemical Equations and Reactions Quiz for Class 10 Students

3 Questions

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Chemical Equations and Reactions Quiz for Class 10 Students

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Questions and Answers

What is the balanced chemical equation for the reaction between sodium and water?

2Na + 2H2O → 2NaOH + H2 (correct)

2Na + H2O → 2NaOH + H2

Na + 2H2O → NaOH + H2

Na + H2O → NaOH + H2

What type of chemical reaction occurs when a hydrocarbon undergoes combustion?

Combustion reaction (correct)

Combination reaction

Single displacement reaction

Decomposition reaction

In the reaction: 2H2 + O2 → 2H2O, what is the role of oxygen?

Oxygen is the catalyst

Oxygen is the oxidizing agent (correct)

Oxygen is the reducing agent

Oxygen is the product

Study Notes

Chemical Reactions

The reaction between sodium and water is a single displacement reaction, represented by the balanced chemical equation: 2Na (sodium) + 2H2O (water) → 2NaOH (sodium hydroxide) + H2 (hydrogen gas)
Combustion of a hydrocarbon is a type of oxidation reaction, involving the reaction of a hydrocarbon with oxygen, typically resulting in the formation of water and carbon dioxide

Roles of Reactants

In the reaction 2H2 (hydrogen) + O2 → 2H2O (water), oxygen acts as an oxidizing agent, facilitating the combustion of hydrogen to form water

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Description

Test your knowledge of chemical equations and reactions with this quiz for class 10 students. Explore balanced chemical equations, types of reactions, and the roles of different elements in chemical reactions. Perfect for students studying chemistry at the high school level.