Solved MCQs Chapter 01 Chemistry 10th FBISE
🔬 Chapter 01 Chemistry Solved MCQs – Class 10
Q1: What is the principle of conservation of mass?
- a) Mass is created during a chemical reaction
- b) Mass is destroyed during a chemical reaction
- c) Mass remains constant during a chemical reaction ✅
- d) Mass can be converted into energy
Q2: What does the peer review process ensure in scientific research?
- a) Faster publication
- b) Accuracy and validity of findings ✅
- c) Higher funding
- d) Reduced experimentation
Q3: Which of the following was an 18th-century chemical paradigm?
- a) Atomic theory
- b) Phlogiston theory ✅
- c) Quantum mechanics
- d) Periodic table
Q4: What does the periodic table of elements organize?
- a) Elements by alphabetical order
- b) Elements by their properties and atomic number ✅
- c) Elements by colour
- d) Elements by discovery date
Q5: What does a 95% confidence level mean in scientific reporting?
- a) Results are 95% accurate
- b) There is a 5% chance the results are incorrect ✅
- c) 95% of scientists agree
- d) The experiment is repeated 95 times
Q6: Which model of the atom includes a central nucleus?
- a) Plum-pudding model
- b) Rutherford model ✅
- c) Bohr model
- d) Quantum mechanical model
Q7: What does repeatability in scientific experiments refer to?
- a) Different results under the same conditions
- b) Same results under the same conditions ✅
- c) Different methods
- d) Multiple publications
Q8: What is reproducibility in scientific experiments?
- a) Different results under the same conditions
- b) Same results using different methods ✅
- c) Results not verified
- d) Repetition by the same scientist
Q9: What paradigm replaced the phlogiston theory?
- a) Atomic theory
- b) Theory of combustion ✅
- c) Quantum mechanics
- d) Periodic table
Q10: Which property does the periodic table help to predict?
- a) Colour of elements
- b) Properties of elements ✅
- c) Weight of elements
- d) Discovery date of elements
0 Comments