Tallest Minar
Effect of acid rain on Iron Pillar of Qutub Minar is- When acid rain falls on the Iron Pillar the colour of Iron Pillar changes from red to black. Other factors like pollution and dust are also responsible. The government should take some strict actions on this issue.
Quwwat-ul-Islam mosque , The iron pillar,Tomb of Iltutmish,Ala-ud-din Khilji's tomb and madarsa,Alai Minar,
because the iron pillar did not get rusted after so many years. it is corrosive resistant due to its high phosphorous content
because aibak wanted to compete with the guptas
corrosion resistance by hydrogen phosphate forming on the high phosphorus content iron
This is not pure iron but a special steel.
Qutub minar was built by Qutbuddn Aibak till the first storey then he died and it was completed by Iltutmish. This is the Muslim version of the history. The real history is different. The township adjoining the Kutub Minar is known as Mehrauli. That is a Sanskrit word Mihira-awali. It signifies the town- ship where the well known astronomer Mihira of Vikramaditya's court lived along with his helpers, mathemati- cians and technicians. They used the so-called Kutub tower as an observation post for astronomical study. Around the tower were pavilions dedicated to the 27 constel- lations of the Hindu Zodiac. Kutubuddin has left us an inscription that he destroyed these pavilions. But he has not said that he raised any tower. The ravaged temple was renamed as Kuwat-ul-Islam mosque. Stones dislodged from the so-called Kutub Minar have Hindu images on one side with Arabic lettering on the other. Those stones have now been removed to the Museum. They clearly show that Muslim invaders used to remove the stone- dressing of Hindu buildings, turn the stones inside out to hide the image facial and inscribe Arabic lettering on the new frontage. Bits of Sanskrit inscriptions can still be deciphered in the premises on numerous pillars and walls. Numerous images still adorn the cornices though disfigured.
iron
CHANDRAGUPTA
asoka
asoka
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