Metals, Minerals, Ores : Properties, Uses Notes with PDF

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Ores and Sources of Metals

• Iron (Fe)
  • Its primary ore is Haematite.
  • It is not obtained from Limestone, Pitch-blende, or Monazite Sand.
• Aluminium (Al)
  • Its main ore is Bauxite.
  • This fact is consistently confirmed across multiple questions.

Properties of Metals and Elements

• Physical States
  • Mercury (Hg) is a metal that is liquid at room temperature.
• Hardness and Malleability
  • Sodium (Na) is a metal that can be easily cut with a knife.
  • Gold (Au) is noted as the most flexible (malleable) metal.
• Conductivity
  • Electrical Conductivity:
    • Silver (Ag) is the best conductor of electricity and heat.
    • Among the options given (Diamond, Silver, Graphite, Wood), Silver has the highest electrical conductivity.
  • Thermal Conductivity:
    • Silver (Ag) is the best conductor of heat.
    • Lead (Pb) is a poor conductor of heat (has minimum heat conduction among the options given).
• Density
  • The correct decreasing order of density is: Gold > Mercury > Steel.
  • This means Gold is the densest, followed by Mercury, and then Steel.
• Comparison with Water
  • Sodium (Na) is lighter than water.
  • Aluminium, Magnesium, and Manganese are not lighter than water.
• Melting Point
  • From the given options (Boron, Iron, Silicon, Aluminium), Boron has the highest melting point.

Industrial Processes

• Cracking is a process associated with the Petroleum industry.
• Smelting is a process used in the Copper industry.
• Hydrogenation is a process associated with Edible Fats.
• Vulcanization is a process used in the Rubber industry.

Composition of Common Substances

• • Diamond is composed of the element Carbon.
  • Marble is primarily composed of Calcium (as calcium carbonate).
  • Sand is primarily composed of Silicon (as silicon dioxide).
  • Ruby is a gemstone containing the element Aluminium (aluminium oxide with chromium impurities).

Applications and Uses

• Nuclear Technology:
  • Liquid sodium is employed as a coolant in nuclear reactors.
• Dental and Healthcare:
  • Calcium carbonate is an ingredient in toothpaste.
  • The statement about Zinc amalgams being used for dental fillings is presented as incorrect in the data (the correct statement is about calcium carbonate in toothpaste).
• Agriculture:
  • The statement that Bordeaux mixture consists of sodium sulfate and lime is presented as incorrect. (A correct fact is that the real Bordeaux mixture is copper sulfate and lime).

Know More About Metals, Minerals, Ores : Properties, Uses:

• Metals, Minerals, Ores : Properties, Uses – Old Year Questions
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