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प्रश्न
Fill in the following blank with suitable word:
Bronze is an alloy of copper and .........
उत्तर
Bronze is an alloy of copper and tin.
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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.
Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
Why does aluminium not corrode right through?
Name the method by which aluminium metal is extracted.
An important ore of zinc metal is:
(a) calamine
(b) cuprite
(c) pyrolusite
(d) haematite
Aluminum is used in thermite welding:
write reaction for process?
Name the following:
The substance added to get rid of gangue in the extraction of metal.
To protect iron from rusting, it is coated with a thin layer of zinc. Name the process.
Which one of the following is not true of metal :
Metal will have 1 or 2 or 3 electrons in their valence shell.
Give the reaction involved during extraction of zinc from its ore by
- roasting of zinc ore
- calcination of zinc ore
