Chemistry · General Awareness

Chemistry of Metals and Alloys

1,762 Questions

Review the physical and chemical properties of various metals and their common alloys. This collection covers industrial applications, metallurgical processes, and practical uses of elements like silicon and boron. Practice these questions to strengthen your chemistry fundamentals for exams.

Properties of metalsCommon alloysIndustrial metallurgyChemical applications

Chemistry of Metals and Alloys Questions

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

The combined state of metals are called:

  1. Mineral

  2. Gangue

  3. Flux

  4. Native form
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The metal found in nature occur in the free or combined state it is generally known as pure metals. A native metal is a metal found in metallic state naturally.  It can be in the pure form or in the form of an alloy.


$Mineral:$  Minerals are substances that are formed naturally in the earth.  Minerals are usually solid, inorganic, have a crystal structure, and are formed naturally by geological process.


$Gangue:$ It is sand, rock and other impurities surrounding the minerals of interest in an ore. It is the combined state of the metal.

$Flux:$ It is a chemical cleaning, flowing or purifying agent.  It is the substance added to the molten metals to bond with impurities that can be removed.

$Native form:$ Native element, any number of chemical elements that may occur in nature uncombined with other elements.


Hence, the correct option is B.

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

Sulphide ores are common for metals:

  1. Ag, Cu and Pb

  2. Ag, Cu and Sn

  3. Ag, Mg and Pb

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  1. Argentite $Ag _2S$
  2.  Galena $PbS$
  3.  Chalcocite $Cu _2S$
  4.  Copper pyrite (chalco pyrite)$ [CuFeS _2]$
  5.  Cassiiterite $SnO _2$
  6.  Dolomite  [$ Ca Mg (CO _3) _2$]
  7.  Bauxite $Al(OH) _3$

∴ Sulphide containing ores are$ Ag, Cu, Pb.$


Option A is correct.

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

___________ metals occur free in nature.

  1. Alkali

  2. Noble

  3. Iron

  4. Aluminum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A noble metal is any metal that is found in its metallic form, either pure or alloyed, in nature. Over geological time scales, very few metals can resist natural weathering processes like oxidation, which is why generally only the less reactive metals such as gold and platinum are found as noble metals.

Multiple choice

What form of metal ruled the first industrial revolution

  1. Iron

  2. Steel

  3. Copper

  4. Brass
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Iron was the primary material used for machinery, bridges, and infrastructure during the early Industrial Revolution. Steel became dominant later during the Second Industrial Revolution.