Question : Pyrolusite is an ore of:
Option 1: Titanium
Option 2: Manganese
Option 3: Chromium
Option 4: Uranium
Correct Answer: Manganese
Solution : The correct answer is Manganese.
Pyrolusite is a mineral, essentially containing Manganese dioxide, and is an important ore of Manganese. The colour of Pyrolusite is darkish or black-grey. It has a chemical formula MnO2. Manganese is a chemical element with atomic number 25, and it is represented by the symbol Mn.
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Question : In the world, India tops in the production of:
Option 1: Nickel
Option 2: Uranium
Option 3: Mica
Option 4: Manganese
Question : Corundum is an ore of:
Option 1: aluminium
Option 2: silver
Option 3: copper
Option 4: iron
Question : Which of the following is used as a coolant in an atomic reactor?
Option 1: Water
Option 3: Graphite
Option 4: Boron
Question : Which of the following is used as fuel rods in an atomic reactor?
Option 1: Sodium
Question : White coal is
Option 1: Uranium
Option 2: Hydro-electricity
Option 3: Diamond
Option 4: Ice
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