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प्रश्न
Zinc sulphide : Roasting : : zinc carbonate : _______
उत्तर
Zinc sulphide : Roasting : : zinc carbonate : calcination
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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.
How many carats is pure gold? Why is pure gold not suitable for making ornaments?
Name the gas in air which tarnishes silver articles slowly.
Give two uses of bronze.
Explain why, carbon cannot reduce oxides of sodium or magnesium.
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
Define the term mineral.
How is sodium metal extracted? Explain with the help of equation of the reaction involved.
Name three other metals which are extracted in a manner similar to sodium.
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
The metal which can be extracted from pyrolusite ore is:
(a) mercury
(b) manganese
(c) aluminium
(d) magnesium
Write equations for each of the above metal which reacts with water.
X is an element in the form of a powder. X burns in oxygen and the product is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete each of the following sentences:
(a) If X is a metal, then the litmus will turn ______.
(b) If X is a non-metal, then the litmus will turn ______.
(c) If X is a reactive metal, then ______ will be evolved, when X reacts with dilute sulphuric acid.
(d) If X is a non -metal, it will form _ oxide, which will form ______ solution with water.
(e) If X is a non -metal, it will not conduct electricity unless it is carbon in the form of ______.
Choose the correct answer from the options given below:
The metal is a liquid at room temperature.
choose the most appropriate term to match the given description.
Heating of the ore in the absence of air to high temperature
State three objectives achieved during the roasting of ores.
Zinc blende is converted to oxide by ______ process.
What is the difference between calcination and roasting?
Atomic number of aluminium is _______ and its electronic configuration is _______.
Give the reaction involved during extraction of zinc from its ore by
- roasting of zinc ore
- calcination of zinc ore
