As you have asked for the Railway Recruitment Board (RRB) Chennai Pharmacist syllabus, I am providing you with it, check below for the details
The Question papers shall be of Objective Multiple Choice Type. The questions paper will be in English, Hindi, Urdu and local languages as indicated in para 15 and are likely to include questions pertaining to –

General Awareness
Arithmetic
General Intelligence
Reasoning
General Science
Technical Ability

General Science About 40 questions will be of General Science

Physics ‐
Universe ‐ General Scientific laws ‐ Scientific instruments ‐ Inventions and discoveries‐National scientific laboratories‐Science glossary‐Mechanics and properties of matter‐Physical quantities, standards and units‐Force, motion and energy‐ electricity and Magnetism ‐ electronics & communications ‐ Heat, light and sound‐Atomic and nuclear physics‐Solid State Physics‐Spectroscopy – Geophysics ‐ Astronomy and space science.

Chemistry:-
Elements and Compounds‐ Acids, bases and salts ‐ Oxidation and reduction – Chemistry of ores and metals Carbon, nitrogen and their compounds‐Fertilizers, pesticides, insecticides‐Biochemistry and biotechnology‐Electro chemistry‐Polymers and plastics.

Botany: - Main Concepts of life science‐The cell‐basic unit of life‐Classification of living organism‐Nutrition and dietetics Respiration Excretion of metabolic waste‐Bio‐communication.

General Awareness: -
Questions are designed to test the candidate‟s general awareness of the environment around him and its application to society. Questions are also designed to test knowledge of current events and of such matters of everyday observation and experience in their scientific aspect as may be expected of an educated person. The test will also include questions relating to India and its neighbouring countries especially pertaining to History, Culture, Geography, Economic Scene, General policy and scientific research.

Arithmetic :- The test of Arithmetical and Numerical abilities will cover Number Systems including questions on Simplification, Decimals, Fractions, L.C.M., H.C.F., Ratio & Proportion, Percentage, Average, Profit & Loss, Discount, Simple & Compound Interest, Mensuration, Time & Work, Time & Distance, Tables & Graphs, etc.

General Intelligence/Reasoning :- It would include questions of both verbal and non-verbal type. The test will include questions on Semantic Analogy, Symbolic operations, Symbolic/Number Analogy, Trends, Figural Analogy, Space Orientation, Semantic Classification, Venn Diagrams, Symbolic/Number Classification, Drawing inferences, Figural Classification, Punched hole/pattern-folding & unfolding, Semantic Series, Figural Pattern–folding and completion, Number Series, Embedded figures, Figural Series, Critical Thinking, Problem Solving, Emotional Intelligence, Word Building, Social Intelligence, Coding and de-coding, Other sub-topics, if any Numerical operations.