Question : Which of the following is a dark reddish-coloured stone used as raw material in aluminium smelting?
Option 1: Mica
Option 2: Gypsum
Option 3: Bauxite
Option 4: Conglomerate
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Correct Answer: Bauxite
Solution : The correct option is Bauxite.
Bauxite is a dark reddish-coloured stone used as the primary raw material in aluminium smelting. Mined globally, it contains aluminium oxide, which is processed to extract aluminium metal. Bauxite is essential for the production of aluminium, a widely used metal in various industries due to its lightweight and corrosion-resistant properties.
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Question : Which of the following compounds is used as a drying agent?
Option 1: Calcium oxide
Option 3: Calcium chloride
Option 4: Calcium hydroxide
Question : Which of the following material is a conductor of electricity?
Option 1: Silver
Option 2: Glass
Option 3: Mica
Option 4: Ebonite
Question : Which of the following elements is used in the manufacture of fertilisers?
Option 1: Fluorine
Option 2: Potassium
Option 3: Lead
Option 4: Aluminium
Question : Which of the following is arranged in order of decreasing conductivity?
Option 1: Copper, aluminium, steel, silver
Option 2: Aluminium, silver, copper, steel
Option 3: Copper, silver, aluminium, steel
Option 4: Silver, copper, aluminium, steel
Question : Which of the following is an example of a metalloid?
Option 1: Indium
Option 2: Gallium
Option 3: Boron
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