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प्रश्न
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.
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उत्तर
Rubber band, leaf, eraser, cooked rice and fresh chapati are soft materials because they can be scratched or compressed easily.
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संबंधित प्रश्न
Write the properties of this substance.
Glass
Write the properties of this substance.
Iron ball
Write the properties of this substance.
Sugar
Write the properties of this substance.
Coal
Very Short Answer Type Question:
Is a substance which can be compressed soft or hard?
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Name some substances which are made from plastics.
Very Short Answer Type Question:
Which is more hard, sponge or iron?
Short Answer Type Question:
Metals have lustre (shine). Give the reason why some metal articles become dull and loose their shine.
Short Answer Type Question:
Metals generally occur in solid state and are hard. Name a metal that exists in liquid state and a metal that is soft and can be cut with knife.
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 |
