Which topic is the best for conduction of CHEM-EXPO?

Question

i selected food adulteration and water analysis. suggest me one topic and provide information regarding that (should be useful in daily life)

Answer 1

Several US cities have faced recent reports that their drinking water supplies are contaminated with pharmaceutical drugs.  A brand new report of this was on the front page of the Chicago Tribune today.

If you live in one of the cities, an obvious topic is how much of what drugs are in the water.  If you don't live in one of the cities, then you could ask if there are previously unreported drugs in the water supply of where you live.

Alternately, food adulteration is so common it is ridiculous.  Your subject could be the presence of salmonella in prepared or unprepared food, or about incidents of hepatitis outbreaks due to poor hygiene at restaurants and food preparers.

Obviously, avoiding unknowing exposure to drugs or germs is of importance in people's lives.  These subjects are all easy to track down with google.