Indian Forest Service (Mains)
Chemistry optional
- 2 papers
- 200 marks each
- 3 h per paper
Paper I covers physical and inorganic chemistry.
Paper I, physical and inorganic chemistry
Questions by topic
Every part of the 2021 to 2025 papers filed under its syllabus unit: 169 parts and 1600 marks in all. Open a unit to see all its questions, newest first, each on its own page.
- 1 Atomic structure10 parts94 marks
- 2 Chemical bonding14 parts135 marks
- 3 Solid state14 parts127 marks
- 4 The gaseous state6 parts55 marks
- 5 Thermodynamics and statistical thermodynamics17 parts163 marks
- 6 Phase equilibria and solutions9 parts86 marks
- 7 Electrochemistry16 parts150 marks
- 8 Chemical kinetics12 parts122 marks
- 9 Photochemistry8 parts81 marks
- 10 Surface phenomena and catalysis7 parts66 marks
- 11 Bio-inorganic chemistry9 parts116 marks
- 12 Coordination chemistry27 parts242 marks
- 13 General chemistry of 'f' block elements10 parts81 marks
- 14 Non-aqueous solvents10 parts82 marks
Each part is filed under the one unit it mainly tests. Where a part touches two units, the section it was set in and the wording of the syllabus decide.