PRODUCTION PROCESSES

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• 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.