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प्रश्न
Name a non-metallic element which is a liquid at ordinary temperatures
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उत्तर
Bromine
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संबंधित प्रश्न
Name the following:
A metal oxide that can be reduced by hydrogen.
Give equation for the following conversion:Aluminium to sodium aluminate.
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Give the chemical name and formula of 'cryolite'
Write balanced equation for the following reaction:
Reduction of iron (III) oxide by carbon monoxide.
In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
Answer the following question with respect by hydrogen :
Explain why powdered coke is sprinkled over than electrolytic mixture.
Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.
Give the equations for the reduction of copper oxide.
Give the equations for the reduction of Lead (II) oxide.
