As per your requirement I am here suggest you books that you can use for preparation of Oil and Natural Gas Corporation Limited (ONGC) Entrance Exam.

ONGC Entrance Exam Books:

General Knowledge 2013: Essential 'Knowledge Capsule' in General Awareness & Current Affairs by Manohar Pandey; Publisher: Arihant
Price: Rs. 25

General Aptitude: (Quantitative Aptitude & Reasoning) For Competitive Examinations by G.K. Publisher
List Price: Rs. 295

Trends In Objective Geology by Ausaf Sayeed Publisher: CBS
List Price: Rs. 300;

NTPC/NHPC/IOC/HP: Electronics Engineering Guide by Gupta; Publisher: RPH
List Price: Rs. 44

NTPC/NHPC/IOC/HP: Mechanical Engg. Guide by Gupta; Publisher: RPH
List Price: Rs. 465

Fundamentals Of Petroleum And Petrochemical Engineering by Ulag Mahadevan; Publisher: SBS
List Price: Rs. 1295

Instrumentation Engineering for GATE: A Refresher by The Gate Academy Publisher:Cengage
List Price: Rs. 225;

NTPC Finance Executive Trainees Recruitment Exam By GK Publications
List Price: Rs. 450;