Class 8 Science Chapter 8: Nature of Matter: Elements, Compounds, and Mixtures — practice questions with answers
Free practice for Class 8 Science, Chapter 8: Nature of Matter: Elements, Compounds, and Mixtures. Try the solved questions below, then take a free test with instant marking and explanations.
48 questions16 easy, 23 medium, 9 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. What are most things around us, like poha or soil, made of?
- Two or more substances mixed together
- A single pure element
- Only water
- Only air
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Answer: A. Two or more substances mixed together
Why: Most things are mixtures. [p.117]
Why: Most things are mixtures. [p.117]
Q2. A uniform mixture of metals, like stainless steel, is called an ______.
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Answer: alloy
Why: Brass and bronze are also alloys. [p.118]
Why: Brass and bronze are also alloys. [p.118]
Q3. Air is a mixture of gases. Which kind of mixture is it?
- Uniform (gas in gas)
- Non-uniform
- Solid in liquid
- It is not a mixture
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Answer: A. Uniform (gas in gas)
Why: Table 8.1 lists air as uniform. [p.120]
Why: Table 8.1 lists air as uniform. [p.120]
Q4. When electricity is passed through water with a little acid, what is collected?
- Hydrogen and oxygen gases
- Only water vapour
- Salt
- Carbon dioxide
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Answer: A. Hydrogen and oxygen gases
Why: Water breaks into its constituents. [p.122–123]
Why: Water breaks into its constituents. [p.122–123]
Q5. Pure substances like hydrogen and oxygen, made of only one kind of atom, are called ______.
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Answer: elements
Why: Each element is made of identical atoms. [p.123]
Why: Each element is made of identical atoms. [p.123]
Q6. Each element is made up of identical tiny particles called ______.
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Answer: atoms
Why: Atoms of different elements differ. [p.123]
Why: Atoms of different elements differ. [p.123]
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Frequently asked questions
How many practice questions are there for Class 8 Science Chapter 8: Nature of Matter: Elements, Compounds, and Mixtures?
48 questions (16 easy, 23 medium, 9 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 8 Science syllabus, used by CBSE and many state boards.