SSC CGL Chemistry · Free notes
Chemical Bonding: SSC CGL Chemistry
Chemical Bonding has seven questions in the SSC CGL Tier I bank: four from the 2023 shifts and three from the 2024 shifts, and none from the 2025 shifts. They ask a formula from valencies, an oxidation number, or how many atoms make up a molecule. One page gives the rule for oxidation numbers and the atomicity of the common elements.
The handout has every subtopic, worked example, formula and trap with answers shown. The formula sheet is the chapter’s formulas and traps alone, on one page.
Subtopic notes
Formula & revision sheet
1 formulas · 1 reference tables · 2 gotchas across all subtopics — the exam-eve cheat-sheet
Formula & revision sheet
1 formulas · 1 reference tables · 2 gotchas across all subtopics — the exam-eve cheat-sheet
Formulas (1)
Watch out for (2)
- Metal ions are never negative→ Valency and oxidation numbers
- Chlorine is diatomic→ Atomicity
PYQ weightage by concept
2 concepts · 7 PYQs — where the marks actually sit, so you know what to drill first
PYQ weightage by concept
2 concepts · 7 PYQs — where the marks actually sit, so you know what to drill first
| Concept | PYQs | Share |
|---|---|---|
| Valency and oxidation numbers | 4 | 57% |
| Atomicity | 3 | 43% |
Test yourself on a real paper
Sit a past SSC CGL paper, timed and marked the way the exam marks it. You see your score and every answer the moment you finish. Free to start.