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प्रश्न
Complete flow chart given below.
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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 ?
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: hydroxide
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:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
Explain the following terms:
(c) slag
On which factors does the purification of metals depend?
`ZnCO_3`
..............................
`2NaNO_3`
......................
`HgS + O_2`
..................
Explain the term of Metallurgy .
Write the molecular formulae of the following compound.
Copper pyrite
Write the molecular formulae of the following compound.
Stannic oxide
Explain the hydraulic separation method with a neat labelled diagram.
Identify the following method of concentration of ores and explain briefly.
Explain the froth floatation method with a neat labelled diagram.
Chemical formula of rust is ______
Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Bassemerisation is used in the extraction of ______.
Name the process that is employed to refine aluminium.
