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प्रश्न
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
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उत्तर
Zinc sulphide is heated strongly in excess of air to convert it to zinc oxide. This process is called roasting.
\[\ce{\underset{\text{Zinc sulphide}}{2ZnS_{(s)}} + 3O_{2(g)} -> \underset{\text{Zinc oxide}}{2ZnO_{(s)}} + \underset{\text{Sulphur dioxide}}{2SO_2↑}}\]
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संबंधित प्रश्न
Define the Ore.
Which of the following pairs will give displacement reactions?
Define the terms gangue.
What is meant by the 'concentration of ore'?
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
(a) Al2O3 + Fe
(b) MnO2 + Al
(c) Fe2O3 + Al
(d) Cu2O + Fe
Give the principles of the hydrolytic method.
Aluminum is used in thermite welding:
what is ignition mixture?
Define the following term.
Gangue
State one observation for each of the following :
Copper sulphate solution is electrolysed using copper electrodes.
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
Name:
The allotrope of the non-metal carbon which conducts electricity.
Name a non- metal that has a metallic luster and sublimes on heating.
Name the following:
A steel grey coloured solid non-metal.
Find the odd one out and give its explanation.
Write the name.
Metals which are amphoteric in nature.
The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.
Write the molecular formulae of the following compound.
Cryolite
Care must be taken while diluting concentrated nitric acid with water. Why?
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give a reason why Aluminium is preferably used in thermite reactions.
