2025 · Paper 1 · Chemistry
Question 14
The printed question, the official key, and each model’s JSON answer plus the reasoning it wrote.
ChemistryPaper 1Matching
Q14
Official A
Model answers
Claude Fable 5.1
Anthropic
Correct4 / 4
A
Claude Fable 5.1 reasoning
Qualitative analysis group reagents: - (P) H₂S in presence of NH₄OH → Group IV (Zn²⁺, Mn²⁺, Ni²⁺, Co²⁺) → Mn²⁺ (3) - (Q) (NH₄)₂CO₃ in presence of NH₄OH → Group V (Ba²⁺, Sr²⁺, Ca²⁺) → Ba²⁺ (4) - (R) NH₄OH in presence of NH₄Cl → Group III (Al³⁺, Fe³⁺, Cr³⁺) → Al³⁺ (2) - (S) H₂S in presence of dilute HCl → Group II (Cu²⁺, Pb²⁺, etc.) → Cu²⁺ (1) So P→3, Q→4, R→2, S→1, which is option (A).
GPT 6 Astra
OpenAI
Correct4 / 4
A
GPT 6 Astra reasoning
No written reasoning was returned for this item.
GPT 5.6 Luna
OpenAI
Correct4 / 4
A
GPT 5.6 Luna reasoning
No written reasoning was returned for this item.