Hamad Chemical Environmental Engineering 18/06/2020 A. 5 B. 100 C. 250 D. 500 Related Mcqs: Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about _______________ decibels?A. 105 B. 135 C. 160 D. 185... Out of the following, TLV of _______________ is maximum (about 500 ppm)?A. Carbon dioxide B. Toluene C. Carbon disulphide D. Acetaldehyde... Exposure to chemicals having carcinogenic properties cause ____________________?A. Dermatitis (skin disorder) B. Cancer C. Asphyxiation (suffocation) D. Asthma... Infective bacteria in water is killed by the _____________ process?A. Sterilisation B. Aeration C. Disinfection D. None of these... Turbidity of water is an indication of the presence of__________________?A. Suspended inorganic matter B. Dissolved solids C. Floating solids D. Dissolved gases...
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