We have great pleasure in bringing out the book 'New Jyothi All in one Series for Plus One Chemistry' to the students of class XI under the 10+2 pattern of education for HSC, VHSC, CBSE and Open School. This book is prepared strictly in accordance with the new NCERT syllabus introduced for the higher secondary board examinations.his book contains 14 chapters. Each chapter is enriched with simple explanation of the content, Solutions of NCERT Exercises, Questions Based on New Evaluation Scheme, Questions from Previous HSE Examinations and Solved Previous Entrance Questions. A sample Seminar and an Assignment are also included at the end of the textbook.