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प्रश्न
Complete the following flowchart.
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उत्तर
| Separation method of metals | |||
| Wilfley table method | Hydraulic separation method | Magnetic separation method | Froth floatation method |
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संबंधित प्रश्न
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Identify A and B and give their reactions with dil HCL and dil H2SO4 ?
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.
Name the processes involved in refining of ores.
Explain the following terms:
(a) flux
Name the methods used for purification?
`HgS + O_2`
..................
Which metal is used for:
making pipes, buckets, water tanks,
Which metal is used for:
lithographic plates for printing
Which metal is used for:
making face creams
State two properties of brass that render it more useful for some purpose than its components.
Complete the following flow chart and answer the questions below:
i) In which method pine oil is used?
ii) Explain what method of concentration in brief.
A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
What do you observe when hydrogen is passed over heated copper oxide?
Chemical formula of rust is ______
Explain the smelting process.
Zirconium is refined by ____________.
Limestone is used as a flux in the extraction of ______.
Which of following metals occurs in native state?
Explain the following term:
Metallurgy
