Is Matter Around Us Pure? · Class 9 · CBSE Science
During an experiment, a student heats a mixture of iron filings and sulphur powder strongly in a china dish. Which of the following observations corr…
Practice question from Is Matter Around Us Pure? (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.
medium · MCQ · Q-23AD14
During an experiment, a student heats a mixture of iron filings and sulphur powder strongly in a china dish. Which of the following observations correctly describes the product formed?
- A.A heterogeneous mixture is formed, and the components can be easily separated using a magnet.
- B.A homogeneous mixture is formed with no chemical reaction taking place.
- C.A compound is formed with properties different from both iron and sulphur, and it does not show magnetism.Correct answer
- D.The iron filings melt completely and mix physically with sulphur without any energy change.
Solution
Heating iron filings and sulphur powder together causes a chemical reaction to form iron sulphide, which is a new compound. A compound has properties entirely different from its constituent elements, and its constituents cannot be separated by physical means like using a magnet.
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