alleryA pen is made of plastic, metal and ink. What does this show about objects?
AEvery object has one material
BMetals never go with plastic
CInk is the only pen material
DParts may use different materials
Answer & Solution
Correct answer: D. Parts may use different materials
1. A pen has a body, a tip and ink inside.
2. These parts are made from plastic, metal and ink respectively.
3. So one object can combine several materials, which rules out the idea of one material per object.
_Source: NCERT Curiosity Class 6 Science, Ch 6, 6.2 How to Group Materials?_
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