A. Coal mining
B. Limestone mining
C. Textile
D. Asbestos
Related Mcqs:
- Industrial workers working in leather tanning & manufacturing units are prone to suffer from ___________________?
A. Respiratory ailments (e.g. bronchitis)
B. Skin diseases (e.g. dermatitis)
C. Silicosis
D. Blurred vision - Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of________________?
A. CO2
B. SO2
C. Hydrocarbons
D. CFC (chloro fluoro carbon) - Persons working in cement plants and limestone quarries are more prone to disease like__________________?
A. Cancer
B. Asthma
C. Silicosis
D. Fluorosis (bone disease) - Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?
A. Chemical coagulation
B. Floatation & skimming
C. Centrifugation
D. Ultra filtration - The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?
A. Mercury
B. Brine
C. Phosphate
D. None of these - Main pollutants released from iron & steel industry is__________________?
A. CO, CO2 & SO2
B. H2S, NO & SO3
C. CO2, H2S & NO2
D. SO3, NO2 & CO2 - Nitrogen oxides (NOx) is not produced in the ______________ industry?
A. Nitric acid making
B. Nitrogenous fertiliser
C. Detergent
D. Any of these - Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about ______________ decibels?
A. 20
B. 60
C. 90
D. 120 - The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about ____________ decibels?
A. 60
B. 90
C. 105
D. 120 - A man exposed to excessive noise level in the working environment may suffer from____________________?
A. Hearing loss
B. Rupture of ear drum
C. Nervousness & fatigue
D. All A., B. & C.
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