[CBSE AIPMT 1999]
Correct Option (d)
Reason : Silicosis is a pollution related disorder. It is caused by inhalation of dust containing free silica or silicon dioxide especially by workers engaged in mining, pottery, ceramic industry, sand blasting, building and construction industries.
Fluorosis is caused due to deficiency of fluoride.
Leprosy is caused by Mycobacterium leprae.
Pneumonicosis is caused by Diplococcus pneumoniae.