This video lecture explain the preparations of ,class XI chemistry, chapter - Some basic concepts in chemistry in two hours , with important tips & tricks . PICS INSTITUTE provides Class room programme for IIT-JEE , AIPMT , CBSE , XI , XII . PICS INSTITUTE provides #Free education for the subject ,Chemistry for NTSE ,NSTSE,KVPY, Science Olympiad and School exams etc. #Students can get exercise based upon this law by subscribing our you tube channel and sending request in comment section.