Karnataka State Board • Classes 6–10

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Practice Quiz — Class 10 Science
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Chapter
Chemical Reactions & Equations
Difficulty
Standard
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Questions
10 MCQs
1

Which of the following is an example of a decomposition reaction?

A. 2Mg + O₂ → 2MgO
B. 2FeSO₄ → Fe₂O₃ + SO₂ + SO₃
C. Fe + CuSO₄ → FeSO₄ + Cu
D. NaOH + HCl → NaCl + H₂O

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Classes 6–10 • Karnataka State Board

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