Indian Institute of Petroleum is located at

The correct answer is: C. New Delhi

The Indian Institute of Petroleum (IIP) is a premier research institute in the field of petroleum science and technology. It is located in New Delhi, India. The institute was established in 1960 by the Government of India to undertake research and development in the field of petroleum. The institute has a strong focus on applied research and its findings are used to improve the efficiency of the petroleum industry. The institute also offers a number of postgraduate and doctoral programs in petroleum science and technology.

The other options are incorrect because:

• Kolkata is the capital of the Indian state of West Bengal.
• Dehradun is the capital of the Indian state of Uttarakhand.
• Dhanbad is a city in the Indian state of Jharkhand.