Many techniques have been developed in chemical industries. One of the finest example is the iron statue near qutab minar which is still rust fee. The most important point is that the architects developed this technique without any laboratory. We will try and learn about some of the scientist of ancient India and their contribution in this lesson. | Many techniques have been developed in chemical industries. One of the finest example is the iron statue near qutab minar which is still rust fee. The most important point is that the architects developed this technique without any laboratory. We will try and learn about some of the scientist of ancient India and their contribution in this lesson. |