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Question
Arrange the jumbled words to arrive at the appropriate name of material and also write two uses of it.
milaunuim
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Solution
Aluminium – Foil in food wraps, in making aircraft, etc.
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Short Answer Type Question:
Why is a tumbler not made with a piece of cloth?
Short Answer Type Question:
Why is water called a universal solvent?
You are provided with the following materials
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Which of the above materials will you identify as transparent?
During summer holidays, a group of children collected a lump of salt, green grass, broken glass piece, a small thermocol box, pen, iron nail, glass marbles, hair, naphthalene ball, a piece of sugar candy (mishri) and tried to group them on the basis of properties given in table below. Help them in filling the table.
| Name of the material |
Appearance (Hard/Soft) |
Transparency (Transparent/ Translucent/ Opaque) |
Floats/ Sinks in water |
Soluble/ Insoluble in water |
