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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

State a Specific Reason for Using Copper in Electrical Cables

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प्रश्न

State a specific reason for using copper in electrical cables

एक पंक्ति में उत्तर
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उत्तर

Copper is used in electrical cables because it is a good conductor of electricity.

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अध्याय 6: Metals and Non-metals - Exercise

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संबंधित प्रश्न

Mark ‘T’ if the statement is true and ‘F’ if it is false.

Sodium is a very reactive metal. ( )


Give reasons for the following.

Copper cannot displace zinc from its salt solution.


What happens when Dilute sulphuric acid is poured on a copper plate?

Write word equations of the reactions involved.


Name two alloys of iron. What elements are present in these alloys?


Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.


What is meant by 22 carat gold?


What is an alloy?


Give reasons 

Magnesium is used in fire works. 


State two important uses of following metal:

Uses of aluminium


When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.


The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.


Name the following:

The most reactive halogen.


What is ductility?


Can you store pickle in an aluminium utensil? Give reason.


Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?


Which one of the following four metals would be displaced from the solution of its salts by other three metals?


Name two major non-metals which are present in fertilisers and enhance the growth of plants.


A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.


Which metals are not solid at room temperature?


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