Which of the following frequencies is not in the audible range of sound for human beings? 1) 5 Hz 2) 50 Hz 3) 500 Hz 4) 5000 Hz

Pollutants in soil can be broken by microorganisms. The process is called 1) Probiotics 2) Bioremediation 3) Bio-augmentation 4) None of the above

In which Industry, workers suffer from Byssinosis? 1) Cardboard 2) Textile 3) Plastic 4) Paper

Line joining places with equal temperature is called: 1) Isotim 2) Isohyet 3) Isobar 4) Isotherm

Most abundant pollutant in the atmosphere among hydrocarbon is: 1) methane 2) propane 3) butane 4) bezypyrene

Nalgonda method was developed by Indian Scientist to remove which chemical species from water? 1) Iron 2) Manganese 3) Chromium 4) Fluoride