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प्रश्न
What is red mud, how is it removed?
उत्तर
- Red mud, also known as bauxite residue, is industrial waste generated during the refinement of bauxite into alumina using the Bayer process. It is composed of various oxide compounds, including iron oxides, which give it the red colour.
- Red mud consists of ferric oxide, sand, etc., left after bauxite dissolves in NaOH, forming sodium aluminate, which filtration removes.
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संबंधित प्रश्न
Give the name and formula of the main orea of iron and zinc ?
From the metals: copper, iron, magnesium, sodium, and zinc, select a different metal in the case which can form 2+ and 3+ ions.
Complete the statement using every given option.
During the extraction of aluminium..............
Ingredients and gangue in bauxite.
Name one metal occurring as a : Oxide ore
The following question refer to the extraction of aluminium and iron from their ores:
What is the major impurity present in iron when it is removed from the furnace?
From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:
(a) Does not react with dilute hydrochloric acid
(b) Can form 2+ and 3+ ions
(c) Has a hydroxide that reacts with both acid and alkalis.
(d) Does not react with cold water, but reacts with steam when heated.
Name the ore of zinc containing its sulphide.
A to F below relate to the source and extraction of either zinc or aluminium.
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
Write down the three letters each from the above list which are relevant to:
- Zinc
- Aluminium
Find the odd one out of the following and explain your choice.
Sulphur, Phosphorous, Carbon, Iodine
This is not an alloy of copper:
