Advertisements
Advertisements
प्रश्न
Write the molecular formulae of the following compound.
Copper pyrite
Advertisements
उत्तर
Copper pyrite- CuFeS2
APPEARS IN
संबंधित प्रश्न
Give the importance of the following for living beings:
Carbon
Why are alkali metals kept in kerosene oil?
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:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
Explain the following term:
Gangue
Explain the following terms:
(c) slag
What do you observe when hydrogen is passed over heated copper oxide?
On which factors does the purification of metals depend?
With a labelled diagram, explain the electro-refining of a particular metal.
`Ag2O`
................................
Which metal is used for:
lithographic plates for printing
Which metal is used for:
making face creams
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?
Cassiterite is a copper ore.
Write scientific reason.
Magnetic separation method is used to separate the magnetic ingredients in the ores.
Write the molecular formulae of the following compound.
Stannic oxide
Draw a neat and labelled diagram for Froth Floatation Process.
Distinguish between:
Froth floatation - Leaching
Observe the figure and name and explain in brief the following method:
Bassemerisation is used in the extraction of ______.
