हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

With Reference to the Following Metals State Their Use in Daily Life Metal: Iron

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प्रश्न

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

iron

एक पंक्ति में उत्तर
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उत्तर

Iron:

  1. Pig Iron is used in drain pipes as it is easily moulded into castings.
  2. Steel is used in Automobiles.
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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.

Generally, non-metals react with acids. ( )


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

Copper displaces zinc from zinc sulphate solution. ( )


What happens when Iron nails are placed in copper sulphate solution?

Write word equations of the reactions involved.


Write the name and formula of a metal hydride.


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?


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

Silver is used to make electric cables.


State two important uses of following metals: 

Uses of iron   


State two important uses of the following metal. 

Uses of magnesium  


Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:

Oxygen


Write scientific reason.

Sodium is always kept in kerosene.


 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

 


What is it made from? Why?

Electric cables


What is it made from? Why?

Ornaments


Halogen reacts with acid.


The metal which is liquid at room temperature is ______.


The electronic configurations of three elements X, Y and Z are X – 2, 8; Y – 2, 8, 7 and Z – 2, 8, 2. Which of the following is correct?


Give an example of a metal which

  1. is liquid at room temperature.
  2. is the best conductor of heat.

The liquid metal at room temperature ______.


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