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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
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.
Give the effect of heat on their: nitrates
Name:
(a) the processes involved in
concentration :-
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.
`Ag2O`
................................
Give the ionization reactions of electrolyte used in Hall’s process. write the reaction at the cathode and the anode. Why the anode has to be replaced in this process?
state the reactions at the two electrodes ?
Distinguish between electrolytic methods of reduction and refining.
Name a metal which forms a liquid alloy at ordinary temperature.
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.
Why does iron or zinc not occur free in nature?
What do you observe when hydrogen is passed over heated copper oxide?
Write the molecular formulae of the following compound.
Stannic oxide
Write the molecular formulae of the following compound.
Ferrous tungstate
Explain the froth floatation method with a neat labelled diagram.
State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.
Bassemerisation is used in the extraction of ______.
