দশম অধ্যায় : খনিজ সম্পদ: ধাতু-অধাতু

Note: Ninth and tenth Class-Chemistry Study-10: Mineral Resources: Metals and Non-Metals - The note is based on section including minerals, ores, metallurgy, sulfuric acid. Significant information about detailed criticism and critical feedback is welcome. . The note will play an important role in the development of the student as well as the aid of the textbook. Will serve as auxiliary to poor  students.  This note will play a vital role in educating the nation.