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प्रश्न
Arrange the jumbled words to arrive at the appropriate name of material and also write two uses of it.
milaunuim
उत्तर
Aluminium – Foil in food wraps, in making aircraft, etc.
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संबंधित प्रश्न
Write the properties of this substance.
Sugar
Write the properties of this substance.
Ink
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Write two substances which are made from leather.
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Long Answer Type Question:
How can you show that some solids like sugar, salt are soluble in water whereas solids like chalk powder and sand are not soluble in water?
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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 |
