Exploring Mixtures and Their Separation — Class 9 Science NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 9 Science chapter "Exploring Mixtures and Their Separation" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 9 Science chapter "Exploring Mixtures and Their Separation" — 8 important questions with detailed answers…
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Key Questions Covered:
- Define pure substances and mixtures.
- What is a solution? Give two examples.
- Define suspension and colloid with examples.
- + 5 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| Define pure substances and mixtures. | ✓ Solved |
| What is a solution? Give two examples. | ✓ Solved |
| Define suspension and colloid with examples. | ✓ Solved |
Showing 3 of 8 questions
Q1: Define pure substances and mixtures.
Pure substances have definite composition and fixed physical properties (e.g., water, salt).
Mixtures are combinations of two or more substances that retain individual properties (e.g., salt water, air).
Mixtures can be separated into components.
Q2: What is a solution? Give two examples.
A solution is a homogeneous mixture where one substance (solute) dissolves completely in another (solvent).
Examples: salt water, sugar solution, salt dissolved in alcohol.
Properties: transparent, particles not visible even under microscope, no precipitation on standing.
Q3: Define suspension and colloid with examples.
Suspension: heterogeneous mixture where particles settle on standing (e.g., chalk powder in water, sand in water)
Colloid: mixture where particles are intermediate in size; appear homogeneous but scatter light (e.g., milk, starch solution, paint)
Showing 3 of 8 questions. Visit the full page for complete solutions.