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questions & answers.
Q1.
What would you do to make a metallic object regain its lustre after it has lost its sheen?
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answer not shownQ2.
Name two hard and two soft solids.
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Two examples of hard solids are:
- Diamond
- Quartz
Two examples of soft solids are:
- Rubber
- Wax
Q3.
Name two objects, the surfaces of which are smooth and two, the surfaces of which are rough.
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Two objects with smooth surfaces:
- Mirror
- Stainless steel
Two objects with rough surfaces:
- Brick
- Sandpaper
- Stone
Q4.
How do aquatic plants and animals survive in water?
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answer not shownQ5.
Classify wood in three ways on the basis of its properties.
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