Chemistry is the most delicate limb of our so-called mother "Science". The experimentation in Chemistry is the only outcome and development of the unifying principles, produced through laboratory process. Once we become familiar with these widely applicable and recognised principles, there remains no longer any need for endless memorisation of innumerable chemical facts. ISC Practical Chemistry Class XI has been thoroughly revised as per the latest syllabus for ISC prescribed by the Council for the Indian School Certificate Examinations (CISCE), New Delhi.