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प्रश्न
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 |
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उत्तर
| Name of the material |
Appearance (Hard/Soft) |
Transparency (Transparent /Translucent/ Opaque) |
Floats/ Sinks in water |
Soluble/ Insoluble in water |
| Lump of salt | Hard | Opaque | Sinks | Soluble |
| Green grass |
Soft | Opaque | Floats | Insoluble |
| Broken glass piece |
Hard | Transparent | Sinks | Insoluble |
| Therm- ocol box |
Soft | Opaque | Floats | Insoluble |
| Pen | Hard | Opaque | Floats | Insoluble |
| Iron nail | Hard | Opaque | Sinks | Insoluble |
| Glass marbles |
Hard | Transparent | Sinks | Insoluble |
| Hair | Hard | Opaque | Floats | Insoluble |
| Naph- thalene ball |
Hard | Opaque | Floats | Insoluble |
| A piece of sugar candy |
Hard | Opaque | Sinks | Soluble |
APPEARS IN
संबंधित प्रश्न
Write the properties of this substance.
Sugar
Write the properties of this substance.
Soap
What is it made from? Why?
A screwdriver
Why does this happen?
The fragrance of incense sticks lighted in one corner of a room spreads to the other corner.
Short Answer Type Question:
Write any four properties of materials.
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.
Short Answer Type Question:
Name the naturally occurring hardest substance known.
Long Answer Type Question:
Write an experiment to show that our palm is translucent.
Find the odd one out from the following:
