Test: Sulphur: Uses and Allotropes - JAMB MCQ

Sulfur has several allotropes, including rhombic sulfur, monoclinic sulfur, and amorphous sulfur. However, graphite sulfur is not an allotrope of sulfur. Graphite is a form of carbon and does not contain sulfur.

Sulfur is extensively used in the production of sulfuric acid, which is a vital industrial chemical. Sulfuric acid is used in various industrial processes such as the production of fertilizers, dyes, detergents, and pharmaceuticals.

Rhombic sulfur is commonly referred to as "flowers of sulfur." It is a yellow crystalline solid that resembles tiny flowers or powder. Rhombic sulfur is one of the most stable allotropes of sulfur.

Sulfur is utilized in the vulcanization process, which strengthens rubber by forming cross-links between polymer chains. Vulcanized rubber exhibits improved elasticity, durability, and resistance to heat and abrasion.

Monoclinic sulfur is the thermodynamically stable allotrope of sulfur at room temperature. It is a dense, yellow crystalline form of sulfur and transitions to rhombic sulfur at temperatures above 96°C.

Sulfur is used in desulfurization processes in the petroleum industry to remove sulfur compounds from fuels. This helps reduce the emission of harmful sulfur oxides during combustion.

Amorphous sulfur, also known as plastic sulfur, is used in matchstick heads. When ignited, amorphous sulfur reacts with other components to create a flame.

Sulfur dioxide (SO₂) is used in the glassmaking industry. It acts as a reducing agent and helps remove impurities from the molten glass, resulting in clearer and more transparent glass.

Sulfur is used in the treatment of acne due to its antibacterial and keratolytic properties. It helps to control excess oil production, unclog pores, and reduce inflammation, thus aiding in the treatment of acne.

Amorphous sulfur is commonly referred to as "plastic sulfur." It is a non-crystalline form of sulfur that can be easily molded or shaped when heated.