6.Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 gm. Molar atomic mass of Magnesium is 24 gm/mol. 7.Write postulates of Daltion's atomic theory (at least three).

CBSE has increased the number of competency-based questions in the exam pattern thus making it more important for students to get acquainted with the syllabus for all subjects. Below we have provided ...

The Central Board of Secondary Education (CBSE) has officially released the Class 9 Syllabus for the 2026–27 academic session ...

The Central Board of Secondary Education (CBSE) has rolled out its new curriculum, launching a phased implementation of the three-language formula from Class 6 and a two-level system of mathematics ...