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Write name. Molecular formula of the common ore of aluminium. - Science and Technology 1

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प्रश्न

Write name.

Molecular formula of the common ore of aluminium.

एक पंक्ति में उत्तर

उत्तर

 Bauxite (Al2O3.2H2O) is the common ore of aluminium.

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अध्याय 8: Metallurgy - Exercises [पृष्ठ १०८]

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बालभारती Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board
अध्याय 8 Metallurgy
Exercises | Q 1.2 | पृष्ठ १०८

संबंधित प्रश्न

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

Copper displaces zinc from zinc sulphate solution. ( )


Give reasons for the following.

Sodium and potassium are stored in kerosene.


Give a reason for Alkali metals are good reducing agents.


Which property of graphite is utilised in making electrodes?


Name an alloy of lead and tin.


Which property of 'solder' alloy makes it suitable for welding electrical wires?


Mention two uses of the following metals and non-metals 

Aluminium  


Give reasons 

Graphite is used in the leads of pencils  


Give reasons 

Gold is mixed with copper and nickel.  


Statements given below are incorrect. Write the correct statements : 

Bronze is a mixture of 10% copper, 80% zinc and 10% tin.  


Statements given below are incorrect. Write the correct statements : 

Aluminium is best conductor of electricity.   


Tick (√) the most appropriate answer. 

Graphite is used :


State the position of the following in the periodic table:

Iron and zinc


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

Hydrochloric acid,


Write scientific reason.

Anodes need to be replaced from time to time during the electrolysis of alumina.


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.


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

Silver


Aluminium: _______: gold : : electric insulator


What is ductility?


Which metal has the highest ductility?


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