Chemistry is the study of matter and its properties. How and why substances combine or separate to form other substances, how substances interact to absorb or produce energy. Chemistry is known as the central branch of science because it touches all other natural sciences like biology, physics, geology and many more. It has made a profound impact on the society. In course 1 of chemistry we learnt about the general concepts related to Atoms, Bonding, States of matter, Thermodynamics and Equilibrium. This course is designed for class 11th on NCERT textbook pattern, it is intended to cover topics on Redox Reactions, Hydrogen, s-Block Elements (Alkali and Alkaline earth metals), Some p-Block Elements, Organic Chemistry – some basic Principles and Techniques, Hydrocarbons, and Environmental Chemistry for the students of Class XI, Semester 2 specific, and others interested in general. This is a 6 months course. Each week, module(s) containing eText, Video tutorial along with Self Assessment questions and Weblinks for extra study will be provided for learning.