1. General Knowledge and General Science Paper - Common
2. Optional Paper - Botany Paper.
The Answer Key for RAS Pre 2012 GK,GS Paper is uploaded on www.rasexam.com with explanation, while second paper Botany was Optional Subject Paper-2. Here is Answer Key for RAS Pre 2012 Botany Paper.
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CHECK RAS Pre 2012 BOTANY Paper, Key, Solution