My NCERT Guide

CBSE Class 10 Science Extra Questions Download Free PDFs

CBSE Class 10 Science Extra Questions The CBSE Class 10 Science extra questions consist of the important concepts which if prepared during exams, will make your practice complete. These que…

Mole Concept Numericals For Class 9,10,11,12/JEE with Answers [Extra Questions]

Q1 Calculate the molar mass of the following substances. (a) Ethyne, C  2  H  2 (b) Sulphur molecule, S  8 (c) Phosphorus molecule, P  4  (Atomic mass of phosphorus = 31) (d) Hydrochloric a…