Class 7 Science Chapter 4: The World of Metals and Non-metals — practice questions with answers
Free practice for Class 7 Science, Chapter 4: The World of Metals and Non-metals. Try the solved questions below, then take a free test with instant marking and explanations.
31 questions10 easy, 16 medium, 5 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. What metal do Sudarshan and other ironsmiths mainly use for tawas, buckets and farm tools?
- Iron
- Copper
- Aluminium
- Gold
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Answer: A. Iron
Why: They use iron, with wooden handles and coal in the furnace. [p.41–42]
Why: They use iron, with wooden handles and coal in the furnace. [p.41–42]
Q2. Why does Sudarshan beat the red-hot iron block with a hammer?
- To shape it, for example into an axe
- To clean it
- To cool it
- To break it into powder
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Answer: A. To shape it, for example into an axe
Why: Hot iron can be beaten into flat shapes. [p.42]
Why: Hot iron can be beaten into flat shapes. [p.42]
Q3. The property of metals that lets them be beaten into thin sheets is called ______.
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Answer: malleability
Why: Metals that flatten on hammering are malleable. [p.43–44]
Why: Metals that flatten on hammering are malleable. [p.43–44]
Q4. When a lump of sulfur is hammered, it breaks into pieces. Sulfur is ______.
- brittle
- malleable
- ductile
- sonorous
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Answer: A. brittle
Why: Coal and sulfur break into pieces — they are brittle. [p.44]
Why: Coal and sulfur break into pieces — they are brittle. [p.44]
Q5. A metal coin dropped on the floor makes a ringing sound, but coal makes a dull sound. This property of metals is ______.
- sonority
- malleability
- ductility
- brittleness
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Answer: A. sonority
Why: The ringing sound of metals is called sonority; metals are sonorous. [p.46]
Why: The ringing sound of metals is called sonority; metals are sonorous. [p.46]
Q6. Which daily example shows the sonority of metals?
- A school bell or ghungroos ringing
- A wooden door closing
- A rubber ball bouncing
- Paper tearing
Show answer
Answer: A. A school bell or ghungroos ringing
Why: Bells and ghungroos ring because metals are sonorous. [p.46]
Why: Bells and ghungroos ring because metals are sonorous. [p.46]
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Frequently asked questions
How many practice questions are there for Class 7 Science Chapter 4: The World of Metals and Non-metals?
31 questions (10 easy, 16 medium, 5 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 7 Science syllabus, used by CBSE and many state boards.