The book is exclusively prepared for DBT-JRF Biotechnology (DBT-BET) aspirants. It contains a total of more than twelve previous years? questions. We pooled all the questions, then filtered these according to the prescribed units. Each question in the book is thoroughly explained. These explanations are meticulously written. Practising with them will certainly enhance the problem-solving skills of the learners. It will also help graduate students to grasp some fundamental concepts in the Life Sciences domain that are required to crack several other similar examinations, viz. CSIR-NET, GATE, ICAR-NET, NII-Ph.D., JNU-Ph.D., IIT-JAM, GAT-B and TIFR-NCBS.