Give reasons :1. Impure diamond is used to cut glass2. Gold is mixed

1.	Give reasons :1. Impure diamond is used to cut glass2. Gold is mixed with copper and nickel.3. Tungsten is used in electric bulbs.
Answer» 1. Impure diamond is used to cut glass because it is the hardest substance and can easily exert force required for cutting. 2. Pure gold is a very soft metal. It cannot be molded into ornaments so it is mixed with copper and nickel so that it becomes harder and bit cheaper also. 3. It is a shiny grey metal, in a solid state at room temperature. It can withstand high temperature because it has the highest melting point among metals. Hence, it is used in electric bulbs.

Give reasons :1. Impure diamond is used to cut glass2. Gold is mixed with copper and nickel.3. Tungsten is used in electric bulbs.

Answer»

1. Impure diamond is used to cut glass because it is the hardest substance and can easily exert force required for cutting.

2. Pure gold is a very soft metal. It cannot be molded into ornaments so it is mixed with copper and nickel so that it becomes harder and bit cheaper also.

3. It is a shiny grey metal, in a solid state at room temperature. It can withstand high temperature because it has the highest melting point among metals. Hence, it is used in electric bulbs.

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Give reasons :1. Impure diamond is used to cut glass2. Gold is mixed with copper and nickel.3. Tungsten is used in electric bulbs.

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