Test preparation

Choosing the right coaching institute is really important. Consider following factors while making a decision-
1. Look up at the records of the coaching institutes for past few years. See if the numbers are steady or fluctuating too much. If numbers are fluctuating too much it means that the coaching institute is not able to meet the requirements of everyone.
2. Very important - Talk to the students in the coaching personally and get their reviews about it.
See how the coaching treats everyone. A good coaching should give attention to every student. It is the case in many institutes that toppers are given special attention while average students are neglected.
There is no problem in giving special attention to toppers but in this process other students shouldn't been harmed.
3. Location also is a very important factor. See if you will be able to stay in a hostel for two years and study properly or would prefer coaching in your own city.
4. Research - Do it properly before taking admission in any coaching institute.

You can prepare for organic chemistry by referring to some of the popular textbooks in chemistry and your NCERT textbook. Practice numerical problems as they are of high importance.
Books to Refer for Preparing Organic Chemistry
Organic chemistry - OP Tandon
Chemical numerical by Mukherjee
NCERT book for class 12 Chemistry
1) IUPAC Nomenclature questions: As per the last year question papers of Chemistry CBSE class 12 the portion of organic chemistry had its major part from the tables of common and IUPAC names as given in the NCERT book. It is always advised to go thoroughly through it to have a clear basic idea of the subject core.
2) Name reactions: List down the important name reactions which have been asked in the past year question papers. Some of the important ones which have been asked repeatedly are: Williamson synthesis, Aldol Condensation, Coupling reaction, Sandmeyer reaction, Kolbes reaction, Hoffmann Bromamide, Cannizzaro Reaction, Clemmensen Reduction reaction etc.
3) Conversions: Questions on conversions are always important and are the most expected ones. There are several ways to solve these sorts of questions but you need to know the most feasible and the shortest way of solving it. You must also know that CBSE board has never asked to mention the conversions having more than 3-steps.
Practice the questions related to conversion and while preparing write down the starting compound and final compound can make your process of solving the question very easy.
Note down the structural differences as it mostly differs in the functional groups, carbon atoms or may be both
Memorize the reactions properly as these can be used to solve these Conversion questions