A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?
2
Fluorosis is caused due to the presence of excessive amount of ______________ in drinking water?
3
Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?
These are just sample questions. The actual quiz contains 15 questions.
