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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:
smelting
`Cu (OH)2`
................................
`ZnCO_3`
..............................
`2Pb(NO3)_2`
.........................
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 two properties of brass that render it more useful for some purpose than its components.
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite.
A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Why does iron or zinc not occur free in nature?
What do you observe when hydrogen is passed over heated copper oxide?
Write scientific reason.
Magnetic separation method is used to separate the magnetic ingredients in the ores.
Draw a neat and labelled diagram for Froth Floatation Process.
Explain concept with example/explain with the help of a balanced equation.
Gangue
Explain the hydraulic separation method with a neat labelled diagram.
Identify false statement regarding lithium aluminium hydride?
