Advertisements
Advertisements
प्रश्न
Name the following:
The process of heating a substance very strongly in such a way that it does not combine with oxygen.
उत्तर
Calcination.
APPEARS IN
संबंधित प्रश्न
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg
An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolysed then a compound D is formed and two gases are liberated.
(a) What are A and B?
(b) Identify C and D.
(c) What will be the action of C on litmus solution? Why?
(d) Write formula of the compound formed when element B reacts with an element E having atomic number 5.
State one observation for each of the following :
Copper sulphate solution is electrolysed using copper electrodes.
Name the following:
Two metals which are found in the free or native state.
Name:
The allotrope of the non-metal carbon which conducts electricity.
Froth floatation process is generally used to concentrate ______ ores.
What is the difference between calcination and roasting?
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:
