Correct option is D
The correct answer is: (d) Cinnabar
Cinnabar (HgS) is the chief ore of mercury. It is a bright red mineral composed of mercury (Hg) and sulfur (S). Mercury is extracted from cinnabar through the process of roasting, which involves heating cinnabar in the presence of oxygen.
Reaction:
HgS (s) + O₂ (g) → Hg (l) + SO₂ (g)
Characteristics of Cinnabar:
Uses of Mercury Extracted from Cinnabar:
Additional Information:
- Color: Bright red to brownish-red.
- Commonly found in regions with volcanic activity and hot springs.
- Toxicity: Cinnabar is toxic due to its high mercury content and requires careful handling.
- Thermometers and barometers.
- Electrical switches.
- Fluorescent lighting.
- Historically used in amalgam for dental fillings.
- Brass: An alloy of copper and zinc.
- Solder: An alloy of tin and lead, used in joining metals.
- Amalgam: A mixture of mercury with another metal, commonly used in dental fillings.
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