Is Matter Around Us Pure Class 9 MCQs with Answers (NCERT-Based)
Is Matter Around Us Pure Class 9 MCQs with Answers & Explanations
Class: 9 |
Subject: Science |
Section: Chemistry |
Topic: Is Matter Around Us Pure
Based on: CBSE Board Examinations (NCERT Syllabus)
Based on: CBSE Board Examinations (NCERT Syllabus)
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 9 Science examination preparation.
1. A pure substance contains:
Answer: A
Explanation: Pure substances have identical particles with fixed composition and properties.
Explanation: Pure substances have identical particles with fixed composition and properties.
2. Which of the following is a mixture?
Answer: C — Air contains many gases.
3. Homogeneous mixtures are called:
Answer: B — Uniform composition throughout.
4. Tyndall effect is shown by:
Answer: B — Colloidal particles scatter light.
5. Suspension particles:
Answer: B — They are large and settle.
6. Example of a compound:
Answer: C — H₂O has fixed composition.
7. Brass is a mixture of:
Answer: A — An alloy mixture.
8. Separation by evaporation is used for:
Answer: B — Water evaporates, salt remains.
9. Filtration separates:
Answer: B — Example: Sand + Water.
10. Chromatography separates based on:
Answer: C — Different solubilities.
11. Milk is a:
Answer: B — Emulsion colloid.
12. Alloy is a:
Answer: B — Homogeneous mixture.
13. Distillation separates:
Answer: B — Based on boiling points.
14. Element contains:
Answer: A — Cannot be broken chemically.
15. Compound properties are:
Answer: B — New substance forms.
16. Sea water is:
Answer: C — Salts dissolved.
17. Centrifugation separates:
Answer: A — Based on density.
18. Colloids appear:
Answer: C — Particles dispersed.
19. Solution particle size is:
Answer: C — Cannot scatter light.
20. Pure substances melt at:
Answer: B — Characteristic property.