JEE (Main) 2015: A Detailed Analysis by Resonance Expert Team

JEE (Main) 2015

A Detailed Analysis (Cut-off, Answer Key, Solution and Subject-Wise Discussion) by Resonance 

On 4th April 2015, JEE (Main) 2015 was conducted for students opting to take this exam by offline mode. This is the third edition of this exams after wide ranging changes were introduced 2 years ago by CBSE and Ministry of HRD. Over 13 Lakh students have filled application form for JEE (Main) 2015 in offline and online modes this year. JEE (Main) 2015 was conducted in two parts (Paper 1 and Paper 2).

Paper 1 was conducted from 9:30 AM to 12:30 PM and Paper 2 for B. Arch. Aspirants was conducted from 2 PM to 5 PM. Paper 1 of JEE (Main) was for students vying for engineering seats in Engineering colleges, while paper 2 this Exam was for students willing for B. Arch degrees across India. The Analysis below pertains to only Paper 1, which was for Engineering Aspirants.

Overall Marks Distribution

The paper pattern for JEE (Main) 2015 was same as last year. The paper had 90 questions each worth 4 marks. All questions were objective type with single correct option. Subject wise each subject had 30 questions of 120 marks.

Subject Class 11 Class 12 Total
Total Ques. Total Marks Total Ques. Total Marks Total Ques. Total Marks
Chemistry 10 40 20 80 30 120
Mathematics 16 64 14 56 30 120
Physics 13 52 17 68 30 120
Grand Total 39 156 51 204 90 360

Overall Difficulty Level Analysis

In this detailed analysis of Jee Paper we have rated every question on a scale of 1 to 3. The ratings are done by expert faculty of Resonance. The individual ratings are then averaged to calculate overall difficulty level.

  • 1: Easy
  • 2: Moderate
  • 3: Difficult
Subject Difficulty Level
Chemistry 1.73
Mathematics 1.73
Physics 1.90
Overall Average 1.79

Pic 1

Difficulty Level Analysis: No of Questions

Subject Easy Level Medium Level Difficult Level
Total Ques. Total Marks Total Ques. Total Marks Total Ques. Total Marks
Chemistry 13 52 12 48 5 20
Mathematics 11 44 16 64 3 12
Physics 8 32 17 68 5 20
Grand Total 32 128 45 180 13 52

Resonance Experts feel that all subjects were of similar difficulty level, while Physics was on tougher side compared with Chemistry & Mathematics. While around 128 Marks can be considered easy overall, 180 marks are relatively difficulty and 52 marks are considered difficult by Resonance Team.

Overall, it is felt that while paper is moderately difficulty, the cut-off may remain same as last year.

Question Wise Difficulty Breakup

pic 2

Mark Wise Difficulty Breakup

pic 3

Physics Analysis

Topic wise Allocation of Marks

UNIT & TOPIC NAME NO OF QUESTION TOTAL MARKS % WEIGHTAGE
Current Electricity 2 8 6.7%
Ohms Law 1 4 3.3%
Kirchoff’s Law 1 4 3.3%
Electro Magnetic Induction 2 8 6.7%
LR Circuit 1 4 3.3%
LC Oscillation 1 4 3.3%
Electrostatics 2 8 6.7%
Lines of Force 1 4 3.3%
Electric Potential 1 4 3.3%
Geometrical Optics 1 4 3.3%
Prism 1 4 3.3%
Modern Physics 2 8 6.7%
Modern Physics 1 4 3.3%
Bohr Model 1 4 3.3%
Simple Harmonic Motion 1 4 3.3%
Simple Harmonic Motion 1 4 3.3%
Sound Waves 1 4 3.3%
Doppler 1 4 3.3%
Mechanics 8 32 26.7%
Elasticity 1 4 3.3%
Relative Motion 1 4 3.3%
Error in Measurement 1 4 3.3%
Friction 1 4 3.3%
Centre of Mass 2 8 6.7%
Rigid Body Dynamics 1 4 3.3%
Gravitation 1 4 3.3%
Heat & Thermodynamics 3 12 10.0%
KTG & First Law of Thermodynamics 2 8 6.7%
KTG & Second Law of Thermodynamics 1 4 3.3%
Capacitor 1 4 3.3%
Circuits 1 4 3.3%
Electro Magnetic Field & Forces 3 12 10.0%
Force on Loop 1 4 3.3%
Force on Straight Wire 1 4 3.3%
Torque on Loop 1 4 3.3%
Electromagnetic waves 1 4 3.3%
Intensity 1 4 3.3%
Wave Optics 2 8 6.7%
Huygen’s Principle 1 4 3.3%
Resolving Power 1 4 3.3%
Principles of Communications 1 4 3.3%
Modulation 1 4 3.3%
GRAND TOTAL 30 120 100%

Chemistry Analysis

Topic wise Allocation of Marks

Unit & Topic Name No of Question Total Marks % Weightage
Inorganic Chemistry 11 44 36.67%
Chemical Bonding 2 8 6.67%
d-block & f-block 1 4 3.33%
Metallurgy 1 4 3.33%
p-block 3 12 10.00%
Periodic Table & Periodicity in Properties 1 4 3.33%
Qualitative Analysis 1 4 3.33%
s-block 1 4 3.33%
Transition Elements and Coordination Chemistry 1 4 3.33%
Organic Chemistry 9 36 30.00%
Alkyl Hallide, Alcohol & Ether 2 8 6.67%
Aromatic Compound 1 4 3.33%
Carbohydrates, Amino Acids and Polymers 1 4 3.33%
IUPAC & Isomerism 2 8 6.67%
Practical Organic Chemistry 3 12 10.00%
Physical Chemistry 10 40 33.33%
Atomic Structure 1 4 3.33%
Chemical Equilibrium 1 4 3.33%
Chemical Kinetics 1 4 3.33%
Electrochemistry 1 4 3.33%
Mole Concept 1 4 3.33%
Solid State 1 4 3.33%
Solution & Colligative Properties 1 4 3.33%
Surface Chemistry 2 8 6.67%
Thermodynamics & Thermochemistry 1 4 3.33%
GRAND TOTAL 30 120 100.00%

Mathematic Analysis

Topic wise Allocation of Marks

Unit & Topic Name No of Question Total Marks % Weightage
Area under curve 1 4 3.3%
Area Between two Curves 1 4 3.3%
Circle 1 4 3.3%
Position of Two Circles 1 4 3.3%
Complex Numbers 1 4 3.3%
Properties of Modulus 1 4 3.3%
Differential equation 1 4 3.3%
Linear Differential Equation 1 4 3.3%
Ellipse 1 4 3.3%
Tangents 1 4 3.3%
Parabola 1 4 3.3%
Parametric Coordinates 1 4 3.3%
Probability 1 4 3.3%
Classical Probability 1 4 3.3%
Quadratic Equation 1 4 3.3%
Relation Between Roots & Coefficients 1 4 3.3%
Matrix & Determinants 2 8 6.7%
Multiplication of Matrices 1 4 3.3%
Cramer’s Rule 1 4 3.3%
Permutation & Combination 1 4 3.3%
Fundamental Theorem of Counting 1 4 3.3%
Binomial Theorem 1 4 3.3%
Summation of Series 1 4 3.3%
Sequence & Series 2 8 6.7%
Geometric Mean 1 4 3.3%
Miscellaneous Series 1 4 3.3%
Vector 1 4 3.3%
Vector Triple Product 1 4 3.3%
Statistics 1 4 3.3%
Mean 1 4 3.3%
Mathematical Reasoning 1 4 3.3%
Negation 1 4 3.3%
Vector & 3-D 2 8 6.7%
Family of Planes 1 4 3.3%
Intersection of Plane and Line 1 4 3.3%
Inverse Trigonometric function 1 4 3.3%
Addition of Inverse Trigonometric Function 1 4 3.3%
Sets & Relation 1 4 3.3%
Subset 1 4 3.3%
Limit of function 1 4 3.3%
Standard Limit 1 4 3.3%
Continuity & Derivability 1 4 3.3%
Differentiability 1 4 3.3%
Tangents, Normal & Applications 1 4 3.3%
Normal at a Point 1 4 3.3%
Application of Derivatives 1 4 3.3%
Maxima & Minima 1 4 3.3%
Indefinite integration 1 4 3.3%
Substitution 1 4 3.3%
Definite integration 1 4 3.3%
Properties of DI 1 4 3.3%
Straight Line 2 8 6.7%
Position of Point 1 4 3.3%
Family of Planes 1 4 3.3%
Height & distance 1 4 3.3%
Angle of Elevation 1 4 3.3%
Grand Total 30 120 100.0%

Expected Cut-off

JEE (Main) 2015: Tentative# Cut-off Table for JEE (Advanced) 2015
Category % Reservation Total Seats Cut-off Marks* % Cutoff
Open 50.5% 75,750 114 31.67%
OBC 27.0% 40,500 72 20.00%
SC 15.0% 22,500 51 14.17%
ST 7.5% 11250 46 12.78%
Total 100.0% 150000

* For Qualification in JEE (Advanced), if student is also in Top-20 % of his/her Board in Class 12 or Minimum of 75% marks in Class 12.

# The Cut-off of JEE (Main) 2015 for JEE (Advanced) 2015 is estimated on the basis of Previous Year Data and Toughness Analysis of JEE (Main) 2015 Paper by Resonance Experts. These are not official data released by Authorities concerned.

  • For Cut-off of JEE Mains 2015 and Eligibility Predictor Please Click Here
  • For Answer Key, Solution and Subject-Wise Discussion Please Click Here

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