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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

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

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प्रश्न

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

Zinc

एक पंक्ति में उत्तर
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उत्तर

Zinc:

  1. For galvanising iron sheets because Zinc coated iron sheets does not rust.
  2. In Dry cells as Zinc container acts as cathode.
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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. ( )


A metal having low melting point is ______ but a non-metal having very high melting point is ______.


The atomic number of an element Y is 16.

  1. What must an atom of Y do to achieve the nearest inert gas electron arrangement?
  2. Which inert gas is nearest to Y?

The alloy in which one of the metals is mercury is called an ______.


Give reasons  

Aluminium is used in making aircrafts.  


Give reasons 

Gold is mixed with copper and nickel.  


Tick (√) the most appropriate answer. 

Graphite is used :


Name a metal which is best conductor of electricity :  


State two important uses of following metal 

Uses of tin  


State two important uses of following metal 

Uses of lead     


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

Magnesium


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.

A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.


Match the columns.

Group A Group B
1) Copper and Zinc a) Brass
2) Copper and Tin b) Bronze
  c) Stainless steel

Complete the following flowchart.


Complete the following flow chart.


What is ductility?


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


The most abundant element in the universe is ____________.


Sodium is a hard metal. 


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