On the link above candidates have to fill Roll no and Date of birth; then after press submit button and get the call letters.
Candidates should log official site for getting latest information: –
About Indian Oil: – Indian Oil Corporation Ltd, an organization of public domain, is leading the chart in the field of Petrochemicals. Its glory is now reckoned globally and currently got 125th positions in Global Fortune out of 500 giant companies. The company is serving the national interest in the sector of Petrochemicals. It has a large network to serve the country men.