General Aptitude · Reasoning
Reasoning
Exam-focused revision notes on Reasoning for CSIR-NET Chemical Sciences, GATE Chemistry and IIT-JAM — the core concepts, the formulas worth memorising, the traps that cost marks, and a quick-recall table.
What is being tested
Pattern recognition under time pressure. Every item has one rule hidden in it; your job is to find the rule, not to be clever. If you cannot see it in about forty seconds, leave it — you only need fifteen of the twenty Part-A questions, and a wrong answer costs 0.5.
What this note covers
- 1What is being tested
- 2Number series — build the difference ladder
- 3Letter series and coding–decoding
- 4Analogies
- 5Classification (odd one out)
- 6Blood relations and directions
- 7Syllogisms
- 8Common traps students miss
- 930-second recall table
Read the full note
The remaining 8 sections — including the worked examples, the common-traps list and the quick-recall table — are part of ChemVidya Full Access, along with 6,000+ practice questions.
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