Since many years the iron pillar at Qutub minar is exposed to the climate changes and harsh weather conditions . Inspite of this fact there is no rusting. Justify the statement.

Since many years the iron pillar at Qutub minar is exposed to the clim

1.	Since many years the iron pillar at Qutub minar is exposed to the climate changes and harsh weather conditions . Inspite of this fact there is no rusting. Justify the statement.
Answer» LAYER of PAINT has been APPLIED to it to PREVENT RUSTING