Advertisements
Advertisements
प्रश्न
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Advertisements
उत्तर
Zinc carbonate is heated strongly in a limited supply of air to convert it to zinc oxide. This process is called calcination.
\[\ce{\underset{\text{Zinc carbonate}}{ZnCO_{3(s)}} ->[Heat] \underset{\text{Zinc oxide}}{ZnO_{(s)}} + \underset{\text{Carbon dioxide}}{CO_2↑}}\]
APPEARS IN
संबंधित प्रश्न
Name two metals which are found in nature in the free state.
Give a reasons for the following:
Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.
Give one word or a phrase:
The process by which sulphide ore is concentrated.
The rocky material found with ores is called ______.
What iron compound is present in haematite ore? Also write its chemical formula.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Give the principles of electromagnetic separation.
Give reasons, why aluminum is used in:
wrapping chocolates
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
Zinc blende is converted to oxide by ______ process.
Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.
Write the name.
The molecular formula of main ore of aluminium -
Explain the concept of Roasting.
Explain the following reaction with the balanced equation.
Chlorine dissolved in water
Complete flow chart given below.
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:
Electrical wires have a coating of an insulting material. The material, generally used is
- Given below are the steps for extraction of copper from its ore. Write the reaction involved.
- Roasting of copper (I) sulphide
- Reduction of copper (I) oxide with copper (I) sulphide.
- Electrolytic refining
- Draw a neat and well labelled diagram for electrolytic refining of copper
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 the reason why the above reaction is known as a thermite reaction.
