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Question
What is it made from? Why?
A screwdriver
Solution
- Iron, steel, and aluminum comprise a screwdriver.
- The rigidity of a screwdriver enables it to effortlessly penetrate a screw in a piece of wood, metal, or wall.
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Name some substances which are made from plastics.
Very Short Answer Type Question:
Which is more hard, sponge or iron?
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Name a non-metal that has lustre.
Short Answer Type Question:
Name the naturally occurring hardest substance known.
Long Answer Type Question:
Describe an experiment to prove that water is transparent.
Which among the following materials would you identify as soft materials and why?
Ice, rubber band, leaf, eraser, pencil, pearl, a piece of wooden board, cooked rice, pulses and fresh chapati.
