1. The principle of conservation of mass states that mass
Answer: B. remains constant during a chemical reaction
Chemistry Class 10 Unit 1: History of Chemistry MCQs
14 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers".
Tap an option to check your answer.
2. The principle of conservation of mass was first shown by
Answer: C. Antoine Lavoisier
3. Mendeleev created the periodic table by observing
Answer: D. patterns in the properties of elements
4. Mendeleev's periodic table was powerful because it
Answer: A. predicted elements that had not been discovered yet
5. The process in which other scientists check a piece of scientific work before it is published is called
Answer: C. peer review
6. The peer review process ensures
Answer: B. accuracy and validity of findings
7. A scientific paradigm is a
Answer: A. set of ideas, methods and rules that guide scientists in their research
8. Which of the following was an 18th-century chemical paradigm?
Answer: D. Phlogiston theory
9. The phlogiston theory was replaced by the
Answer: A. oxygen theory of combustion
10. The Plum Pudding model of the atom was suggested by
Answer: B. J.J. Thomson
11. The atomic model that includes a small, dense, positively charged nucleus was given by
Answer: D. Rutherford
12. A 95 % confidence level in scientific reporting means that scientists are
Answer: C. 95 % sure the true value lies within the stated range
13. Repeatability refers to getting
Answer: D. the same results under the same conditions
14. Reproducibility refers to getting the same or similar results
Answer: A. under different conditions, by different methods or in different labs
About Chemistry Class 10 Unit 1 MCQs (Federal Board)
These 14 Chemistry MCQs cover Class 10 Unit 1: History of Chemistry of the Federal Board (FBISE) SSC-II (Class 10) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. You can also read the History of Chemistry notes for this chapter. Download the History of Chemistry MCQs as a PDF using the button at the top of this page.