Chemistry · Science General

Metallurgical Processes

1,436 Questions

This section explores key metallurgical processes including ore concentration, pyrometallurgy, and metal refining. It also covers corrosion and the properties of refractory materials. These chemistry questions are relevant for engineering and science entrance tests.

Pyrometallurgy furnacesMetal refining techniquesCorrosion protection methodsOre concentrationAuto reduction process

Metallurgical Processes Questions

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

Various processes involved on the extraction of metals from their ores and refining are known as:

  1. concentration of ore

  2. enrichment of ore

  3. refining of ore

  4. metallurgy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To obtain a metal from its ore is called extraction of metal. The various process involved in the extraction of metals from the ores and refining are known as metallurgy.

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

The process of extraction of metal from its ores, is known as :

  1. concentration

  2. calcination

  3. purification

  4. metallurgy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The process of extracting metals from their ores is called as metalurgy.The process employed in the extraction of the ore depends on the nature of the ore and the impurities present in it.The following are the basic steps for a metallurgical operation;

  1. Crushing and grinding of the ore.
  2. Concentration of the ore 
  3. Working of the ore 
  4. Purification or refining of the metal

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

In metallurgy, the concentration of ore is followed by the dressing of ore.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Dressing of ore is followed by concentration of ore. 
Steps of metallurgy  are:
  • Crushing of the ore
  • Concentration of ore also known as Dressing of the ore
  • Conversion of concentrated ore to oxide 
  • Reduction of oxide to metal 
  • Refining of metal or Purification
Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

Identify $x,\ y \ and \ z$ for the following metallurgical process :


$Metal\ sulphide\overset { x }{ \rightarrow  } Metal\ oxide\overset { y }{ \rightarrow  } Impure\ metal$

$x,\ y$ and $z$ are respectively :

  1. roasting, smelting, electrolysis

  2. roasting, calcination, smelting

  3. calcination, auto-reduction, basemerisation

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Roasting $\rightarrow $ It is a process in metallurgy
in which sulphide are is heated in 
air and transforms into oxides.

Smelting $\rightarrow $ It is a process of extracting
a base metal from corresponding
metal oxides.

electrolysis $ \rightarrow $ It is used in metallurgical
process, such as in extraction or purification
of metals from ores or compounds.

Therefore, the correct option is A.

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

Which of the following statements is correct regarding the slag formation during extraction of a metal like copper or iron?

  1. The slag is lighter and lower melting than the metal.

  2. The slag is heavier and lower melting than the metal.

  3. The slag is lighter and higher melting than the metal.

  4. The slag is heavier and higher melting than the metal.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Slag formed in extraction of metals are lighter and having low melting point than metal so they generally appear in upper layer of solutions.