Advertisements
Advertisements
प्रश्न
Explain with reason:
Electrolytic reduction is done to obtain aluminium?
उत्तर
Aluminium oxide is a very stable compound because of its great affinity for oxygen. It is not reduced easily by common reducing agents such as carbon or hydrogen. Hence, the electrolytic reduction is done to obtain aluminium.
APPEARS IN
संबंधित प्रश्न
Select the process from the following which matches the given description.
(calcination, roasting, pulverisation, smelting)
Crushing of the ore into a fine powder.
What is galvanization? How does it protect iron from rusting?
Why does iron or zinc not occur free in nature?
Why ‘the food containing iron salts’ should not be cooked in aluminium utensils?
State the use of:
cast iron
Complete the statement using every given option.
During the extraction of aluminium..............
Ingredients and gangue in bauxite.
Give composition and uses of the following alloys. Mention the reason for its use.
Duralumin
Give composition and uses of the following alloys. Mention the reason for its use.
Brass
What is an alloy? An alloy usually has some property which makes it useful in a specific way.
What is the special property of : type metal?
Which of the following statements are correct?
(i) A depressant prevents certain type of particle to come to the froth.
(ii) Copper matte contains \[\ce{Cu2S}\] and \[\ce{ZnS}\].
(iii) The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of \[\ce{SO2}\] during the extraction.
(iv) Zinc can be extracted by self-reduction.
