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प्रश्न
What is galvanized iron.
उत्तर
Iron having a coating of zinc is called galvanized iron.
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संबंधित प्रश्न
M is a metal above hydrogen in the activity series and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context, answer the following:
1) What kind of combination exists between M and O?
2)How many electrons are there in the outermost shell of M?
3) Name the group to which M belongs.
4) State the reaction taking place at the cathode.
5) Name the product at the anode.
How is manganese extracted from manganese dioxide, MnO2? Explain with the help of an equation.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
Which metal is extracted from bauxite ore?
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
Zinc blende is converted to oxide by ______ process.
Name the following :
The Process of heating an ore to a high temperature in the presence of air.
Write the name.
Metals which are amphoteric in nature.
Bauxite reacts with sodium hydroxide in the Bayer’s process.
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Identify the substance oxidised and reduced in the above reaction.
