Some basic concepts of chemistry mcq with explanation

In the view of Competative exam Chemistry is considered to be the most scoring subject. This is one of the easiest scoring subjects, it is often ignored and undermined a subject. But if you want to get an edge over others, here is a tip, Chemistry mcq concepts for any competitive exam. Chemistry demands the … Read more

Mole Concept Class 9 | Questions of mole Concept with answers

The quantity of a substance that contains as many elementary entities, such as atoms, molecules ions or formula units as the number of atoms in exactly 12 g of C-12. In modern terms, gram-molecule and gram-atom are termed as a mole of molecules and a mole of atoms respectively e.g., 1 gram-molecule of oxygen and … Read more