Penicillin was a chance discovery. Is it true or not? If the answer is true give reason.

Explanation

Serendipity is a phenomenon associated with scientific method. It is the faculty of making interesting discoveries unexpectedly. One of the best examples is the discovery of Penicillin by Alexander Fleming.
The chance observation of an infected petri dish by Alexander Fleming in 1928 led to the discovery of antibiotics, their manufacture and use to cure the disease caused by staphylococcus which causes throat infection. Alexander Fleming while working on Staphylococci bacteria, one observed contamination of one of the culture plates around which Staphylococci could not grow. He found out that it was due to a chemical produced by blue-green mould. Fleming called the chemical substance as Penicillin after the blue green mould, Penicillium notatum.