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

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

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प्रश्न

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

Magnesium

अति संक्षिप्त उत्तर
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उत्तर

  1. It is used in fireworks as it burns with a dazzling light.
  2. Photography: Magnesium produces a bright flash. It is used in strip form.
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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. ( )


Which property of graphite is utilised in making electrodes?


Name an alloy of lead and tin.


What is a thermite reaction? Explain with the help of an equation.


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.


Fill in the blank spaces by choosing the correct words from the given list. 

List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

______ is a liquid metal. 

 


State two important uses of following metal 

Uses of lead     


State two important uses of following metal

Uses of mercury  


Write name.

The oxide that forms salt and water by reacting with both acid and base.


Give reasons for the following:
Most metals conduct electricity well.


Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.


Name the following:

The most reactive halogen.


Name the following:

A halogen which is a solid at room temperature.


The minerals from which the metal can be separated economically are called _______.


The metal which is liquid at room temperature is ______.


The ability of metals to be drawn into thin wire is known as


In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.

  1. ______  is a metal.
  2. Metals are good ______ of electricity. 

The typical shine of metals is called ______.


Sodium is a hard metal. 


Which metals are not solid at room temperature?


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