Thank you for reporting, we will resolve it shortly
Q.
What do you mean by Taj Trapezium?
Environmental Chemistry
Solution:
A plan that aims at cleaning the air in an area that includes the towns of Agra, Firozabad, Mathura and Bharatpur is known as Taj Trapezium. Under this plan more than $2000$ polluting industries inside the Taj Trapezium area would start using natural gas or LPG instead of coal or oil.