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 Which allotropic form of sulfur is used as an insecticide and acaricide in agriculture?

Option: 1

Rhombic sulfur


Option: 2

Monoclinic sulfur


Option: 3

Amorphous sulfur


Option: 4

Plastic sulfur


Answers (1)

best_answer

Option A Rhombic sulfur is the most common form of sulfur and is used as an insecticide and acaricide in agriculture. It is a yellow, crystalline solid that is stable at room temperature and pressure. Rhombic sulfur has a melting point of 112.8^{\circ}C and a boiling point of 444.6^{\circ}C.

Explanation of incorrect option

incorrect option B Monoclinic sulfur is a less stable form of sulfur that can be obtained by cooling molten sulfur slowly. It has a melting point of 119^{\circ}C and is less commonly used in agriculture.

incorrect option C Amorphous sulfur is a non-crystalline form of sulfur that lacks a definite shape or structure. It is usually produced by heating sulfur to a high temperature and cooling it rapidly. Amorphous sulfur is not commonly used in agriculture.

incorrect option D Plastic sulfur is a metastable form of sulfur that is obtained by heating rhombic sulfur above its melting point and cooling it rapidly. It is a soft, elastic solid that can be molded like plastic. Plastic sulfur is not commonly used in agriculture.

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Kshitij

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