Chemical Reactions and Equations

🏫 NCERTClass 10Science·62 total questions
Showing 110 of 62 questionsPage 1 of 7
Question 1 · MCQ
1 Mark

What is the purpose of balancing a chemical equation?

Question 2 · MCQ
1 Mark

What type of reaction is represented by the equation: 2Na + Cl2 → 2NaCl?

Question 3 · MCQ
1 Mark

What is the difference between a physical change and a chemical change?

Question 4 · MCQ
1 Mark

What is the role of a catalyst in a chemical reaction?

Question 5 · MCQ
1 Mark

What is the law of conservation of mass?

Question 6 · MCQ
1 Mark

What is the significance of writing the state of matter in a chemical equation?

Question 7 · MCQ
1 Mark

What is the purpose of using an arrow in a chemical equation?

Question 8 · MCQ
1 Mark

What is the difference between a combination reaction and a decomposition reaction?

Question 9 · MCQ
1 Mark

What is the role of a spectator ion in a chemical reaction?

Question 10 · MCQ
1 Mark

What is the difference between a reversible reaction and an irreversible reaction?