Advertisements
Advertisements
प्रश्न
Bauxite reacts with sodium hydroxide in the Bayer’s process.
पर्याय
Right
Wrong
उत्तर
Bauxite reacts with sodium hydroxide in the Bayer’s process- Right
APPEARS IN
संबंधित प्रश्न
How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
Name two metals which are always found in combined state.
An ore of manganese metal is:
(a) bauxite
(b) haematite
(c) cuprite
(d) pyrolusite
The two metals which are extracted by means of electrolytic reduction of their molten salts are:
(a) magnesium and manganese
(b) iron and aluminium
(c) zinc and magnesium
(d) magnesium and aluminium
Which of the following metals can be obtained from haematite ore?
(a) copper
(b) sodium
(c) zinc
(d) iron
The metal which can be extracted from pyrolusite ore is:
(a) mercury
(b) manganese
(c) aluminium
(d) magnesium
Which metal can be extracted from the following ore?
Calamine
Give reasons, why aluminum is used in:
wrapping chocolates
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Name : The metal which is liquid at room temperature.
How many valence electrons are present in metals ?
Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
Name a non- metal that has a metallic luster and sublimes on heating.
Name the following:
The process of heating an ore to a high temperature in the presence of air.
Froth floatation process is generally used to concentrate ______ ores.
Find the odd one out and give its explanation.
In the electrolytic reduction of alumina, the lining of graphite acts as an anode.
Explain the characteristics of ionic compounds.
Explain the difference between Bayer’s process and Hall’s process by explaining the Bayer’s process.
Which of the following ore is concentrated by the Froth floatation process?
