Advertisements
Advertisements
प्रश्न
Complete flow chart given below.
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
brown powder deposit on iron?
Define the term ‘metallurgy’. State the processes involved in metallurgy ?
Name:
(a) the processes involved in
concentration :-
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
Explain the following terms:
(a) flux
Explain the following terms:
(c) slag
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
With a labelled diagram, explain the electro-refining of a particular metal.
`ZnCO_3`
..............................
`2NaNO_3`
......................
`2Cu_2O +Cu_2S`
......................
Which metal is used for:
lithographic plates for printing
Name the following:
Name an allotrope of a non-metal that allows electricity to pass through it.
The following is a sketch of an electrolytic cell used in the extraction of aluminium :
(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?
Write the molecular formulae of the following compound.
Stannic oxide
Write the molecular formulae of the following compound.
Ferrous tungstate
Explain the hydraulic separation method with a neat labelled diagram.
Bassemerisation is used in the extraction of ______.
After partial roasting, the sulphide of copper is reduced by ______.
Identify false statement regarding lithium aluminium hydride?
