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प्रश्न
Complete flow chart given below.
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उत्तर
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संबंधित प्रश्न
Give the importance of the following for living beings:
Carbon
A student has been collecting silver coins and copper coins. One day she observed a black
coating on silver coins and a green coating on copper coins. Which chemical phenomenon is
responsible for these coatings? Write the names of black and green coatings.
Explain the following term:
Gangue
Explain the following terms:
smelting
What do you observe when hydrogen is passed over heated copper oxide?
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
On which factors does the purification of metals depend?
`MnO_2 + 4Al` 
…………….
`ZnCO_3`
..............................
`2NaNO_3`
......................
`2Pb(NO3)_2`
.........................
Distinguish between electrolytic methods of reduction and refining.
What is magnalium? Name the main elements present in it? Write its one use ?
Explain the term of Metallurgy .
Cassiterite is a copper ore.
Explain concept with example/explain with the help of a balanced equation.
Gangue
Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at 27°C? (R = 2 cal K-1 mol-1).
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
Calcination is used in metallurgy for the removal of?
