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प्रश्न
Bauxite reacts with sodium hydroxide in the Bayer’s process.
पर्याय
Right
Wrong
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उत्तर
Bauxite reacts with sodium hydroxide in the Bayer’s process- Right
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संबंधित प्रश्न
Fill in the following blank with suitable word:
The non-metal present in steel is ............
Name one ore of sodium. Name the sodium compound present in this ore and write its chemical formula.
How is sodium metal extracted? Explain with the help of equation of the reaction involved.
Which metal is extracted from bauxite ore?
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg
Which of the following is an ore of mercury metal?
(a) rock salt
(b) cinnabar
(c) calamine
(d) haematite
Zinc blende ore can be converted into zinc oxide by the process of:
(a) roasting
(b) hydrogenation
(c) chlorination
(d) calcination
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
(a) Name the metal and write its chemical symbol.
(b) Write the name and formula of the sulphide ore.
(c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
(d) Name a common device in which this metal is used.
(e) Can this metal displace copper from copper sulphate solution? Why?
Aluminum is used in thermite welding:
what is thermit?
Name the anode, the cathode and the electrolyte used in the electrolytic refining of impure copper.
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
Why is powdered coke sprinkled on top of the electrolyte?
Name the following:
The mixture of materials fed into a furnace to extract a metal.
Name the following:
The substance added to get rid of gangue in the extraction of metal.
Complete the incomplete statement with missing words:
Metals are ______ while non-metals are ______ conductors of heat.
To protect iron from rusting, it is coated with a thin layer of zinc. Name the process.
What is the difference between calcination and roasting?
Atomic number of aluminium is _______ and its electronic configuration is _______.
Write the name.
Metals which are amphoteric in nature.
Mercury, silver, gold are highly reactive metals.
