Environmental Engineering In Ce - Study Mode
[#221] Turbidity of water is an indication of the presence of
Correct Answer
(A) Suspended inorganic matter
[#222] Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.
Correct Answer
(C) 170
[#223] Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.
Correct Answer
(C) 90
[#224] 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.
Correct Answer
(B) 90
[#225] Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.
Correct Answer
(B) 105