Some Basic Concepts of Chemistry is the first chapter of NCERT Class 11 Chemistry and the root of almost every numerical in physical chemistry. It covers the laws of chemical combination, atomic and molecular masses, the mole concept and molar mass, percentage composition, empirical and molecular formulae, stoichiometry, limiting reagents and concentration terms such as molarity and molality. These free MCQ practice tests help you build speed and accuracy with these calculations in the NEET pattern. Each test is timed, scored instantly and followed by a full answer review.