Give reason for the following: (a). …

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Give reason for the following: (a). Metals are used to make strings of musical instruments. (b). Copper bottomed utensils are used for cooking. (c). Sodium is kept in kerosene while phosphorus is kept in water.

Posted by Diksha Laniya🐥 5 years ago

CBSE > Class 08 > Science

5 answers

Diksha Laniya🐥 5 years ago

What are exhaustibe natural resources?

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Gaurav Seth 5 years ago

c. Sodium metal is kept in kerosene because sodium is very reactive metal. It is kept in kerosene to prevent it from coming in contact with oxygen and moisture. If this happens, it will react with the moisture present in air and form Sodium hydroxide. This is a strongly exothermic reaction, and lot of heat is generated. It will result out in the form of fire.

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Diksha Laniya🐥 5 years ago

It's is right answer

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Diksha Laniya🐥 5 years ago

Thanks

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Gaurav Seth 5 years ago

1. Metal alloys have improved and unique property of hardness and sonority. Also, alloys have excellent ductility. Therefore metal alloys are used for making bells and strings of instruments. For example, bronze is used for making bells and stringed instruments.

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