Chandigarh

The pattern of the paper was broadly the same as last year.
These are the few irregularities I observed:
This year, the single correct questions were asked as the matrix match type questions. Usually matrix match type of questions consist of two columns, but this year, it had three columns.
One maths question in Paper 2 had none of the options correct and will most likely be awarded as bonus.
Paper 2 (especially Physics) was considerably more difficult than Paper 1. Generally, both the papers are of similar difficulty level.
Detailed Analysis:
Marks distribution by grade:
Key Takeaway: More weight is given to the 12th grade chapters compared to the 11th grade chapters.
Section wise Distribution
Physics
Key Takeaway: Electromagnetics had the most number of questions followed my mechanics (even though mechanics is perceived as a bigger more important section)
Chemistry
Key Takeaway : Inorganic chemistry had the highest weightage even though generally it is perceived as the least important part of chemistry.
Maths
Key Takeaway: Most of the questions (mark wise) are asked from Calculus(47) and Algebra(26) followed by Co-ordinate Geometry(20). Calculus and Algebra have been the most asked topics in JEE over the years and so proper attention should be given to these topics while preparing for the exam.