Here are 10 important questions based on the chapter "Chemical Reactions and Equations" (Class 10, CBSE):
π₯ Very Important Questions – Chemical Reactions and Equations
π§ͺ 1. Define a chemical reaction.
Give one example with a balanced chemical equation.
⚖️ 2. Balance the following chemical equations:
(a) Fe + H₂O → Fe₃O₄ + H₂
(b) Al + HCl → AlCl₃ + H₂
π 3. What is a precipitation reaction?
Give an example and write a balanced chemical equation.
π¨ 4. What is meant by oxidation and reduction?
Explain with an example of a redox reaction.
π‘ 5. Write the balanced chemical equation for the reaction between:
(a) Sodium and water
(b) Zinc and dilute sulphuric acid
π₯ 6. What is a combination reaction?
Give one example with a balanced equation.
π§ 7. Why is respiration considered an exothermic reaction?
Write the chemical equation for it.
❌ 8. Write the chemical equation and identify the type of chemical reaction for:
(a) CaCO₃ → CaO + CO₂
(b) AgNO₃ + NaCl → AgCl + NaNO₃
π 9. What is a displacement reaction?
Write one example each of metal and non-metal displacement.
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