Hardness : We can easily compress sponge but an iron rod cannot be compressed. Materials that can be compressed are called soft materials like foam, melted wax. Materials which cannot get compressed are called hard materials like aluminium, copper etc.
Most metals, such as iron, copper and aluminium are hard and because of this quality of hardness, metas are used to make household utensils and factory equipments.
Which you will select for making buckets for keeping water? | |||
Right Option : B | |||
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Which of the following are correct : (a) Materials which cannot get compressed are called hard materials. (b) Aluminium, copper are the soft material. (c) Foam, melted wax are the soft material. | |||
Right Option : C | |||
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Which of the following is an hard material ? | |||
Right Option : A | |||
View Explanation |
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