Is any one know important reactions,laws and preparaions in chemistry for IITJEE 2012?and How can I prepare for Chemistry?means laws and preparations

Dear student,

It is really difficult to give the list  here. While studying each topic if you take note of any special reagent it will be of help, for example John's reagent or Collin's reagent during oxidation of alcohol to aldehyde only, or LiAlH4 or NaBH4 during reducition of compounds. Refer to any standard book on reaction mechanism like MTG which gives list of common reagents