ONGC is hiring for graduate trainees in various engineering disciplines such as programming, production, drilling, cementing, mechanical, electrical, instrumentation, civil, and transport. The eligibility requires an engineering degree with 60% marks and age limits between 30-35 years depending on caste. A total of 350 positions are available across disciplines. The selection process involves a written exam of 150 marks over 3 hours testing general awareness, subject specific knowledge, and specialized disciplines through objective and descriptive questions. This is followed by a psychometric test and personality interview. Important application dates are provided with registration starting on July 21, 2011 and the written exam on September 18, 2011.