Q1: What are Production Processes?
Ans: Production processes are the methods used to convert raw materials into useful products.
These processes involve different physical and chemical operations to obtain pure metals or finished goods.
Q2: Define Reduction.
Ans: Reduction is a chemical process in which oxygen is removed from a substance or electrons are gained by a substance.
Q3: State the methods of Reduction.
Ans: The methods of reduction are:
- ➔ Reduction by Carbon
- ➔ Reduction by Carbon Monoxide
- ➔ Reduction by Hydrogen
- ➔ Electrolytic Reduction
Q4: Write an equation explaining the process of Reduction.
Ans: Example of reduction process:
Fe2O3 + 3C → 2Fe + 3CO
In this reaction, iron oxide is reduced to iron by removing oxygen.
Q5: State the advantages of Reduction in Metallurgy.
Ans: Advantages of reduction are:
- ➔ Helps in extracting pure metals from ores
- ➔ Removes oxygen impurities
- ➔ Useful in large-scale metal production
Q6: State the disadvantages of Reduction in Metallurgy.
Ans: Disadvantages of reduction are:
- ➔ Requires high temperature
- ➔ Produces harmful gases like CO and CO2
- ➔ Energy consuming process
Q7: Define Oxidation.
Ans: Oxidation is a chemical process in which oxygen is added to a substance or electrons are lost by a substance.
Q8: State the methods of Oxidation.
Ans: Methods of oxidation are:
- ➔ Oxidation by Air
- ➔ Oxidation by Oxygen
- ➔ Oxidation by Chemical Agents
Q9: State the advantages of Oxidation in Metallurgy.
Ans: Advantages of oxidation are:
- ➔ Helps in removing impurities
- ➔ Converts metals into oxides for further processing
- ➔ Improves purity of metal
Q10: State the disadvantages of Oxidation in Metallurgy.
Ans: Disadvantages of oxidation are:
- ➔ Loss of useful metal
- ➔ Requires controlled conditions
- ➔ May form unwanted oxides
Q11: Write an equation explaining the process of Oxidation.
Ans: Example of oxidation process:
2Mg + O2 → 2MgO
In this reaction, magnesium combines with oxygen and gets oxidized.
Q12: What are Oxides?
Ans: Oxides are compounds formed when an element reacts with oxygen.
Q13: What is Anthracite?
Ans: Anthracite is a type of coal that contains a high percentage of carbon and burns with very little smoke.
Q14: What is Anhydride?
Ans: Anhydride is a substance formed by removing water from another compound, usually an acid.
Q15: What is Acid and Base in Metallurgy?
Ans: In metallurgy:
Acid is a substance that reacts with bases.
Base is a substance that reacts with acids to form salt and water.
Q16: State the effects of Acid and Base in Metallurgy.
Ans: Effects are:
- ➔ Help in removing impurities
- ➔ Form slag during reactions
- ➔ Improve metal extraction process
Q17: What is Slag?
Ans: Slag is a waste material formed when impurities react with flux during metal extraction.
Q18: State the functions of Slag.
Ans: Functions of slag are:
- ➔ Removes impurities
- ➔ Protects molten metal from air
- ➔ Helps in purification of metal
Q19: What is Flux?
Ans: Flux is a substance added during metallurgy to remove impurities from ores.
Q20: What is Fluorspar?
Ans: Fluorspar is a mineral (CaF2) used as a flux in metallurgy to remove impurities.
Q21: Define Base Metal.
Ans: Base metals are metals that easily react with oxygen and corrode, such as iron and copper.
Q22: Define Nobel Metal.
Ans: Noble metals are metals that do not easily react with air or moisture, such as gold and platinum.
