All specifications12 papers · 1 session
IGCSE science-double-award 4XSD1
pearson-edexcel/international-gcse/science-double-award/4xsd1
Official exam documents streamed from the syllabai-pastpapers archive (AI-IDENTIFIED provenance, operator ratification pending · index generated 2026-10-21, tree 2c438f3). QP = question paper, MS = mark scheme, ER = examiner report.