Advertisements
Advertisements
प्रश्न
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
Advertisements
उत्तर
Zinc sulphide is heated strongly in excess of air to convert it to zinc oxide. This process is called roasting.
\[\ce{\underset{\text{Zinc sulphide}}{2ZnS_{(s)}} + 3O_{2(g)} -> \underset{\text{Zinc oxide}}{2ZnO_{(s)}} + \underset{\text{Sulphur dioxide}}{2SO_2↑}}\]
Notes
There is a printing mistake in the question.
APPEARS IN
संबंधित प्रश्न
What chemical process is used for obtaining a metal from its oxide?
Name the method by which aluminium metal is extracted.
Name one ore of copper (other than cuprite). Which compound of copper is present in this ore? Also, write its chemical formula.
How is aluminium metal extracted? Explain with the help of an equation.
The metal which can be extracted simply by heating the cinnabar ore in air is ______.
When an object made of metal A is kept in air for a considerable time, it loses its shine and becomes almost black due to the formation of a layer of substance B. When an object made of another metal C is kept in damp air for a considerable time, it gets covered with a green layer of substance D. Metal A is the best conductor of electricity whereas metal C is the next best conductor of electricity.
- What is metal А?
- What is metal C?
- Name the substance B.
- Name the substance D.
- What type of chemical can be used to remove the green layer from metal C and clean it? Why?
Which metal can be extracted from the following ore?
bauxite
Give the principles of electromagnetic separation.
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
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.
Define the following term.
Mineral
How an ore is concentrated by froth floatation process?
Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________
State three objectives achieved during the roasting of ores.
Atomic number of aluminium is _______ and its electronic configuration is _______.
Explain the concept of Calcination.
Explain concept with example/explain with the help of a balanced equation.
Roasting
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
A mineral from which the metal can be extracted economically and conveniently is known as ______.
