Advertisements
Advertisements
प्रश्न
Write the molecular formulae of the following compound.
Copper pyrite
Advertisements
उत्तर
Copper pyrite- CuFeS2
APPEARS IN
संबंधित प्रश्न
brown powder deposit on iron?
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Give the effect of heat on their ?
oxides
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:
(a) the processes involved in
concentration :-
Name the processes involved in refining of ores.
Explain the following term:
Gangue
`ZnCO_3`
..............................
`2NaNO_3`
......................
`2Cu_2O +Cu_2S`
......................
Which metal is used for:
making pipes, buckets, water tanks,
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.
What do you observe when hydrogen is passed over heated copper oxide?
Match the columns.
| Group A | Group B |
| 1. ZnS | a) Copper Sulphide |
| 2. HgS | b) Bauxite |
| c) Cinnabar | |
| d) Zinc blend |
Distinguish between:
Froth floatation - Leaching
Identify the following method of concentration of ores and explain briefly.
Zirconium is refined by ____________.
Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
After partial roasting, the sulphide of copper is reduced by ______.
