Dear aspirant,

As you have mentioned that you want to know about the comparison between March 18th 2021 1st slot and July 25th 2021so let me tell you that this is a very relative question because something which is easy for me may not be easy for others and vice versa.

So, as per my view JEE mains 18th March paper was on a easier side because the questions from chemistry section were easy and physics was the toughest among all.