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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

State Two Important Uses of Following Metal: Uses of Silver

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प्रश्न

State two important uses of following metal: 

Uses of silver  

एक पंक्ति में उत्तर
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उत्तर

Uses of silver :

  • It is used for making coins and ornaments.
  • It is used for making high quality glass mirrors.
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अध्याय 6: Metals and Non-metals - Additional questions 2

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 2 | Q 3.02

संबंधित प्रश्न

What is an amalgam?


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


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.


What is meant by 22 carat gold?


What is an alloy?


Write ‘true’ or ‘false’ for the following statement : 

Silver is used to make electric cables.


Aluminium is not used to make : 


Name a metal which is not malleable : 


State two important uses of following metal 

Uses of tin  


State two important uses of following metal:

Uses of aluminium


State two important uses of the following metal. 

Uses of magnesium  


Write name.

Molecular formula of the common ore of aluminium.


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.


 Match the alloys given in column I to the uses given in column II : 

Column I Column II
(i) Duralumin  A. Electrical fuse
(ii) Solder B. Surgical instruments 
(iii) Brass  C. Aircraft body 
(iv) Stainless Steel   D. Decorative articles

 


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

iron


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

Zinc


State a specific reason for using copper in electrical cables


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.


Complete the following flowchart.


Which metals are not solid at room temperature?


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