Stainless steel has iron and
Stainless steel is an alloy of iron with chromium and nickel. Its composition is 82% Fe and 18% (Cr + Ni). It resists corrosion and used for making automobile parts and utensils.
van-Arkel method of purification of metals involves converting the metal to a
A metal which is refined by poling is
Wolframite ore is separate from tin stone ore by the process of
Pb and Sn are extracted from their chief ore by
‘Lapis-Lazuli’ is a blue coloured precious stone. It is mineral of the class
Gallium arsenide is purified by
Which of the following is correct?
Metals found in free as well as combined states are
By which of the following processes, the ore is made porous?
Thermite process is used in reduction of