Hello everyone, the offline examination of JEE Mains was conducted on 8th april at various centres across India, and we hope you all fared well. In this video, we will do an analysis of JEE Mains 2018 paper, and discuss some trends seen in JEE papers over the years. We will primarily look at the topic wise distribution and , the difficulty level and based on all this, we will predict the cut off for this year.

If we talk about the paper, Since JEE Main has started, which was in 2013

  • Exam pattern remains the same
  • Marking, time, no of questions -same

We will be looking at three different parameters – XI ,XII distribution, Topic wise distribution and Difficulty distribution

Let us have a look at it subject wise

 

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Chemistry

If we look at the chemistry section – we can say that slightly More number questions from XI this time whereas more from 12th usually

Chemistry 2018 2017 2016
XI 17 17 30
XII 13 13 30
Total 30 30 30

Takeaway: study both XI and XII

Topic wise distribution

Chemistry 2018 2017 2016 2015
Organic Chemistry 9 11 11 9
Inorganic Chemistry 10 8 7 12
Physical Chemistry 11 11 12 9

Observation: Almost equal weightage of all 3

Takeaway: Do NOT ignore inorganic – very scoring and straightforward marks

Difficulty distribution: Same difficulty as last year. Chemistry was a little tricky as questions were tested your overall understanding of the subject instead of fitting a particular question type.

Not very lengthy. Practical chemistry related questions were asked – salt analysis , titration

Option elimination was possible

Physics Chemistry Maths
Easy 6 7 6
Medium 16 17 14
Hard 8 6 10

JEE (Main) 2017 (according to curriculum) Data dump here

Physics Chemistry Maths
Easy 9 7 4
Medium 16 16 16
Hard 4 7 10

Takeaway: Be calm and more aware – have a look at options properly. Strong conceptual knowledge required.

Mathematics

XI-XII Question Distribution

Comments on the distribution of questions across Std XI and XII

Data collected from curriculum mapping

Subject No. of Questions
XI XII Total
Physics 13 17 30
Chemistry 17 13 30
Maths 18 12 30
Total 48 42 90

Observation: More XI than XII

Takeaway: thorough prep required

Conceptual clarity of XI more required as concept application is there in XII standard.

Grade No. of Questions
JEE (Main) 2018 JEE (Main) 2017 JEE (Main) 2016 JEE (Main) 2015

JEE (Main)

2014
11 48 38 42 40 44
12 42 52 48 50 46
Total 90 90 90 90 90

Takeaway: If you are aspiring to aim over 200, you should give equal emphasis to both 11th and 12th class concepts.

Chapter and section (eg – mechanics, calculus) distribution (absolute and comparison with last year)

2018 2017 2016 2015
Maths
Algebra 7 10 5 8
Coordinate geometry 6 4 6 5
Calculus 10 10 11 10
Trigo 2 2 3 2
Stat, Mathematical reasoning 2 1 2 2
Vector and 3D 3 3 3 3

Observation: Similar distribution as last year. Cal >algebra> coordinate

  • Concepts from sets and relations were mixed in a lot of chapters.
  • Easy questions from conics and P n C were asked
  • A lot of questions had concepts from 2 or 3 chapters mixed.

Takeaway: Calculus comprises one third of the paper – don’t ignore. Algebra and coordinate also form major chunks. Thorough study is required.

Difficulty distribution (absolute and comparison with last year

Physics Chemistry Maths
Easy 6 7 6
Medium 16 17 14
Hard 8 6 10

JEE (Main) 2017 (according to curriculum) Data dump here

Physics Chemistry Maths
Easy 9 7 4
Medium 16 16 16
Hard 4 7 10

Observation: Similar difficulty. Slightly more difficult due to length of the questions

  • Easier questions from Conics Sections and Permutations and Combinations which made it easy.
  • 2 – 3 concepts were mixed in each question making them lengthier.

Takeaway: Similar difficulty can be expected next year. Save more time for math and finish chemistry section faster

Physics

XI-XII Question Distribution

Subject No. of Questions
XI XII Total
Physics 13 17 30
Chemistry 17 13 30
Maths 18 12 30
Total 48 42 90

Observation: More from XII than XI

Takeaway: Equal importance to both years

Practicals should not be ignored – easy questions on meter bridge , potentiometer were asked

Chapterwise

2018 2017 2016 2015
Physics
Mechanics 8 6 5 6
Electromagnetism 9 8 7 9
Optics 2 2 5 3
Heat, Thermodynamics and Properties of matter 2 5 3 4
Modern Physics and Semiconductors 6 6 5 4
Waves, SHM 2 2 3 2
Error, Experimental Skills 1 1 2 2

Observation : Similar weightage

Only one question from heat and thermodynamics

Takeaway – Similar pattern can be expected and modern physics shouldn’t be ignored. Mechanics and Electromagnetism are big chunks so more questions are obviously expected

Difficulty

Difficulty distribution (absolute and comparison with last year)

Physics Chemistry Maths
Easy 6 7 6
Medium 16 17 14
Hard 8 6 10

JEE (Main) 2017

Physics Chemistry Maths
Easy 9 7 4
Medium 16 16 16
Hard 4 7 10

Observation: Slightly trickier. Not so many straightforward questions.

Takeaway: Read the questions properly and conceptual understanding is important

OVERALL

Chemistry was conceptual. One or two questions required lots of calculation

Maths was lengthy but non ambiguous

Physics was the trickiest, also calculative in nature

A little tougher than last year but almost similar

Set C two questions can be expected to be bonus

One Q19 – Data Missing

Q67 physics – The answer doesn’t match the given options

Level of Questions

JEE (Main)

2018

 JEE (Main) 2017 JEE (Main) 2016 JEE (Main) 2015 JEE (Main) 2014 JEE (Main) 2013
Easy 19 20 24 23 29 26
Medium 47 49 42 45 41 49
Hard 24 21 24 22 20 15
Cutoff (Marks) 70-75 81 100 105 110 113
Grade No. of Questions
JEE (Main) 2018 JEE (Main) 2017 JEE (Main) 2016 JEE (Main) 2015

JEE (Main)

2014
11 48 38 42 40 44
12 42 52 48 50 46
Total 90 90 90 90 90

Takeaway: If you are aspiring to aim over 200, you should give equal emphasis to both 11th and 12th class concepts

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