Vijayawada: The Physics department of PB Siddhartha College of Arts and Science organised a guest lecture on ‘Search of Hydrocarbon’ on the college premises on Friday. The guest of the programme was MV Ramanamurthy, ONGC consultant. Speaking on the occasion, Ramanamurthy said that there are petroleum reserves in earth and it takes many years to form. There are many rock layers inside the earth and in our country there are a huge mineral reserves. He explained in detail about how to explore the minerals underneath the earth and above the earth. The college principal Dr M Ramesh, director V Baburao, Physics department HoD Dr K Bhargavi and others were present.