a-Biochemistry is the branch of science concerned with the chemical and physico-chemical processes and substances which occur within living organisms. b-Analytical chemistry is the branch of chemistry concerned with the identification and measurement (by chemical or instrumental means) of the constituents of a substance, or of particular components (for example contaminants) within it. c-Geochemistry can be defined as the study of the chemical composition of the earth and its rocks and minerals. d-Nuclear chemistry is the branch of science which deals with the chemistry of radioactive materials, especially with the transformation of chemical elements by (natural or artificial) nuclear processes. e-Inorganic chemistry is the branch of chemistry that deals with inorganic compounds.
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I consulted Oxford's dictionary.