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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

With Reference to the Following Metals State Their Use in Daily Life Metal: Copper - Chemistry

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प्रश्न

With reference to the following metals state their use in daily life metal:

copper

एका वाक्यात उत्तर

उत्तर

Copper:

  1. Making calori meters as it is good conductor of heat.
  2. Making thin wires being conductor of electricity.
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पाठ 6: Metals and Non-metals - Exercise

संबंधित प्रश्‍न

Give reasons for the following.

Copper cannot displace zinc from its salt solution.


Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas?

(b) Write down word equations of all the reactions taking place in this process.


Give a reason for Alkali metals are good reducing agents.


State one use of Gold.


Give the composition of an alloy called solder. State its one property and one use.


Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.


State two important uses of following metal 

Uses of tin  


State two important uses of following metal

Uses of mercury  


State the position of the following in the periodic table:

Alkaline earth metals


Why is hydrogen placed with alkali metals?


Why are alkali metals kept in kerosene oil?


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.


What is it made from? Why?

A pair of tongs.


What is it made from? Why?

Pots and pans


Name the following:

A metal used in flexible pipes.


Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.


The most abundant metal in the earth’s crust is ____________.


Which of the following is not a metal?


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