The Question is from neet-chemistry general-principles-and-processes-of-isolation-of-e , and it was created by the author Mr. S M HUSSAIN

Question

The process of heating an ore in the presence of air is called:

Mr. S M HUSSAIN · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
 **Primary Concept**: Metallurgy
 **Related Topics**: Ore processing, extraction of metals
 **Prerequisites**: Basic understanding of chemical reactions involving oxidation.
## SOLUTION PATHWAY
**Given Information**:
	The question describes a process involving heating an ore in the presence of air.
**Method & Steps**:
 1. Identify the process based on the description.
  Reasoning: Heating an ore in the presence of air leads to oxidation reactions.  Different metallurgical processes involve different reactions and conditions.
 2. Analyze the options.
  Working: 
		* Calcination involves heating an ore in the absence of air (or limited air supply) to drive off volatile components like water or carbon dioxide.  This is not the case here.
		* Roasting involves heating an ore in the presence of air to convert sulfides into oxides. This is a common process for sulfide ores, and fits the description.
		* Smelting involves heating an ore with a reducing agent to obtain the metal.  This does not involve air directly.
		* Refining is a purification process carried out after extraction of the metal.
 3. Select the appropriate option.
  Result: Roasting is the correct answer because it involves heating the ore in the presence of air.
  Verification: The definition of roasting aligns perfectly with the given description.
 ## OPTION ANALYSIS
A :x: Calcination does not involve heating in the presence of air. It's usually done in a limited air supply.
B ✓: Roasting is the correct answer as it specifically involves heating an ore in the presence of air, leading to oxidation reactions.
C :x: Smelting involves the use of a reducing agent, not just air.
D :x: Refining is a purification process that takes place after the extraction of the metal, not during the initial ore treatment.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing calcination and roasting:  Remembering that roasting involves air is crucial to avoid this mistake.
  2.Overlooking the 'in the presence of air' detail:  Carefully reading the question is essential to choose the correct process.
 **Quick Tips**:
  1.Remember the key difference:  Roasting uses air for oxidation; calcination does not.
  2.Associate roasting with sulfide ores: Many sulfide ores undergo roasting as a preliminary step in metal extraction.

Mr. S M HUSSAIN · Answer

Calcination

Mr. S M HUSSAIN · Answer

The correct Option is "Roasting"

Mr. S M HUSSAIN · Answer

Smelting

Mr. S M HUSSAIN · Answer

Refining

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