{"id":"b21-2018-styczen-egzamin-zawodowy-pisemny/zad/28","paper_id":"b21-2018-styczen-egzamin-zawodowy-pisemny","number":"28","points":null,"ptype":"closed","subject":"b21","category":"egzamin-zawodowy","year":2018,"month":"styczen","level":null,"text":"Zadanie 28.\nPodstawowym składnikiem biogazu jest\nA. etan.\nB.\nbutan.\nC.\nmetan.\nD. propan.","answer":null,"answer_text":null,"solution":null,"image":"img/b21-2018-styczen-egzamin-zawodowy-pisemny/zad-28.webp","solution_image":null,"topics":null,"page_from":8,"source":"ocr","answer_source":null,"answer_text_source":null,"solution_source":null,"text_source":"ocr","source_label":"B21 · Egzamin zawodowy · styczeń 2018","subject_label":"b21","category_label":"Egzamin zawodowy","text_html":"<p>Zadanie 28.<br>Podstawowym składnikiem biogazu jest<br>A. etan.<br>B.<br>butan.<br>C.<br>metan.<br>D. propan.</p>","solutions":[]}