Answer
A-Organic chemistry is the chemistry of organic compounds ( contain hydrocarbon) their structures and reactivity towards functional groups.
B-Forensic chemistry is the study of legal investigation, drug use, posing by a forensic chemist.
C-Physical chemistry is the branch of chemistry that deals chemical properties of materials and explaining by physics law.
M-Medicinal chemistry is the chemistry of drug compounds that associate physiological, biological, therapeutic action when taken in the body.
