Question Paper
Class / Subject: Class 10 (ICSE) · Chemistry
Chapter: Chapter 13 — Chapter 13: Practical Chemistry
Time Allowed: 32 minutes
Max Marks: 16
1. What test identifies oxygen gas? [1]
(A) Glowing splint relights
(B) Burning splint gives a pop
(C) Limewater turns milky
(D) No test exists
2. What test identifies hydrogen gas? [1]
(A) Burning splint gives a pop sound
(B) Glowing splint relights
(C) Limewater turns milky
(D) No test exists
3. What test identifies carbon dioxide gas? [1]
(A) Limewater turns milky
(B) Glowing splint relights
(C) Burning splint gives a pop
(D) No test exists
4. What helps identify specific ions in solution? [1]
(A) Characteristic colour changes and precipitates
(B) Only smell
(C) Only taste
(D) Random guessing
5. Why is laboratory safety important? [1]
(A) To prevent accidents and ensure proper chemical handling
(B) It's not important
(C) Only for decoration
(D) No reason
6. What do hazard symbols indicate? [1]
(A) Potential dangers of chemicals
(B) Nothing important
(C) Only the price
(D) Only the colour
7. What is essential for reliable experiments? [1]
(A) Accurate observation and systematic procedure
(B) Guessing results
(C) Skipping steps
(D) Ignoring safety
8. Why learn practical chemistry techniques? [1]
(A) To conduct safe and reliable experiments
(B) No reason
(C) It's not useful
(D) Only for tests
9. What test identifies oxygen gas? [1]
(A) Glowing splint relights
(B) Burning splint gives a pop
(C) Limewater turns milky
(D) No test exists
10. What test identifies hydrogen gas? [1]
(A) Burning splint gives a pop sound
(B) Glowing splint relights
(C) Limewater turns milky
(D) No test exists
11. What test identifies carbon dioxide gas? [1]
(A) Limewater turns milky
(B) Glowing splint relights
(C) Burning splint gives a pop
(D) No test exists
12. What helps identify specific ions in solution? [1]
(A) Characteristic colour changes and precipitates
(B) Only smell
(C) Only taste
(D) Random guessing
13. Why is laboratory safety important? [1]
(A) To prevent accidents and ensure proper chemical handling
(B) It's not important
(C) Only for decoration
(D) No reason
14. What do hazard symbols indicate? [1]
(A) Potential dangers of chemicals
(B) Nothing important
(C) Only the price
(D) Only the colour
15. What is essential for reliable experiments? [1]
(A) Accurate observation and systematic procedure
(B) Guessing results
(C) Skipping steps
(D) Ignoring safety
16. Why learn practical chemistry techniques? [1]
(A) To conduct safe and reliable experiments
(B) No reason
(C) It's not useful
(D) Only for tests