Question

which of the following conditions is not a type of pneumoconiosis? a anthracosis b silicosis c cyanosis d asbestosis

Explanation:

Pneumoconiosis is a group of lung - diseases caused by inhalation of dust. Anthracosis is due to coal dust, silicosis from silica dust, and asbestosis from asbestos dust. Cyanosis is a bluish discoloration of the skin and mucous membranes due to low oxygen levels in the blood, not a type of pneumoconiosis.

Answer:

C. cyanosis