THE TEXT BOOK OF CHEMISTRY FOR GRADE 10 - "PROF MUHAMMAD UMER MANGRIO, PROF ABU SAAD AZMI, PROF ATTA MUHAMMAD SHAIKH, PROF MUHAMMAD JAWAID SIDDIQUI, PROF DADU KHAN BURDI, PROF AKBAR ALI KHASKHELI" (SINDH TEXT BOOK BOARD PAKISTAN, 2021)