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

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JEE (Advanced) 2015

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

After introducing major changes in IIT Admission Process in 2013, on 24-May-2015 (Sunday) JEE Advanced 2015, stage-2 for IIT Admission Process was conducted. 1.52 Lakh students were selected to appear for this exam, although only 1.22 Lakh students were eligible to sit for exam based on various pre criteria. As earlier IIT-JEE Examinations, JEE (Advanced) 2015 was conducted in two parts (Paper 1 & Paper 2). Paper 1 was conducted from 9 AM to 12 PM and Paper 2 was conducted from 2 PM to 5 PM.

Overall Marks Distribution

In Paper I & II both, Total 60 Questions were asked. 20 Questions from Each Subject were asked. First paper was of 264 marks while paper two was of 240 marks. Each subject was of 168 marks overall. Total marks for both paper combined were 504. Total 196 marks questions were from class 11th syllabus and 308 marks questions were from class 12th syllabus.

Subject Paper No of Questions Marks
11th 12th 11th 12th
Chemistry Paper 1 7 13 32 56
Paper 2 6 14 24 56
Mathematics Paper 1 8 12 40 48
Paper 2 8 12 32 48
Physics Paper 1 8 12 36 52
Paper 2 8 12 32 48
Total Paper 1 23 37 108 156
Paper 2 22 38 88 152

question

marks

Brief Quantitative Analysis

Following is the brief pattern description of both the papers of JEE (Advanced) 2015.

Question Pattern for Each Subject in Paper 1
One or More than One Correct Answer Type MCQs Single Digit Integer Answer Type Questions Match the Column Type MCQ Total
Questions/Subject 10 8 2 20
Marks / Question 4 4 8 N.A
Negative Marking -2 0 -4 N.A
Marks/Subject 40 32 16 88
Total Questions 30 24 6 60
Total Marks 120 96 48 264
Question Pattern for Each Subject in Paper 2
One or More than One Correct Answer Type MCQs Single Digit Integer Answer Type Questions Comprehension MCQs Total
Questions/Subject 8 8 4 20
Marks / Question 4 4 4 4
Negative Marking -2 0 -2 N.A
Marks/Subject 40 32 16 80
Total Questions 24 24 12 60
Total Marks 96 96 48 240

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 Paper 1 Paper 2 Total
Chemistry 2.27 2.15 2.21
Mathematics 2.36 2.25 2.31
Physics 1.95 2.20 2.07
Total 2.19 2.20 2.20

Difficulty Level Analysis: No of Questions

Subject Easy Moderate Difficult Total
Chemistry 9 15 16 40
Mathematics 7 15 18 40
Physics 11 17 12 40
Total 27 47 46 120

Difficulty Level Analysis: Marks Allocation

Subject Easy Moderate Difficult Total
Chemistry 36 60 72 168
Mathematics 28 60 80 168
Physics 44 68 56 168
Total 108 188 208 504

Resonance Experts feel that all subjects were of similar difficulty level, while Physics was relatively less tough compared with Chemistry & Mathematics. Around 108 Marks can be considered easy overall, 188 marks Moderate and 208 marks are considered difficult in the paper by Resonance Team.

Overall, it is felt that paper was on difficult side.

difficulty question

difficulty marks

Physics Analysis

Topic wise Allocation of Marks

SUBJECT- TOPIC- SUBTOPIC # QUESTIONS TOTAL MARKS % WEIGHTAGE
PHYSICS 40 168 100.0%
Electrodynamics 9 36 21.4%
Capacitance 1 4 2.4%
Current Electricity 2 8 4.8%
Electro Magnetic Field 3 12 7.1%
Electrostatics 3 12 7.1%
Heat & Thermodynamics 3 12 7.1%
Heat Transfer 1 4 2.4%
KTG & Thermodynamics 2 8 4.8%
Mechanics 13 56 33.3%
Elasticity & Viscosity 2 8 4.8%
Error in Measurement 2 8 4.8%
Fluid Mechanics & Properties of Matter 1 4 2.4%
Gravitation 2 8 4.8%
Rigid Body Dynamics 3 12 7.1%
Unit & Dimension 2 8 4.8%
Work, Power & Energy 1 8 4.8%
Modern Physics 7 32 19.0%
Atomic Physics 2 8 4.8%
Bohr Model 1 4 2.4%
Nuclear Physics 3 16 9.5%
Photoelectric Effect 1 4 2.4%
Optics 6 24 14.3%
Geometrical Optics & Physical Optics 5 20 11.9%
Wave Optics 1 4 2.4%
SHM & Waves 2 8 4.8%
SHM 2 8 4.8%

 Chemistry Analysis

Topic wise Allocation of Marks

SUBJECT- TOPIC- SUBTOPIC # QUESTIONS TOTAL MARKS % WEIGHTAGE
CHEMISTRY 40 168 100.0%
Inorganic Chemistry-I 6 24 14.3%
Chemical Bonding 4 16 9.5%
p-block 2 8 4.8%
Inorganic Chemistry-II 9 40 23.8%
Coordination Compounds 4 16 9.5%
d-block & f-block Elements 2 8 4.8%
Metallurgy 2 12 7.1%
Qualitative Analysis 1 4 2.4%
Organic Chemistry-I 1 4 2.4%
General Organic Chemistry- II 1 4 2.4%
Organic Chemistry-II 13 52 31.0%
Amine 1 4 2.4%
Aromatic Compounds 4 16 9.5%
Biomolecules 1 4 2.4%
Carbonyl compounds 1 4 2.4%
Grignard Reagent, Reduction, Oxidation & Hydrolysis 1 4 2.4%
Hydrocarbon (Alkane, Alkene & Alkyne) 3 12 7.1%
Practical Organic Chemistry 1 4 2.4%
Stereoisomerism 1 4 2.4%
Physical Chemistry-I 5 24 14.3%
Atomic Structure & Nuclear Chemistry 1 4 2.4%
Chemical Equilibrium 1 4 2.4%
Ionic Equilibrium 1 4 2.4%
Thermodynamics and Thermochemistry 2 12 7.1%
Physical Chemistry-II 6 24 14.3%
Chemical Kinetics 2 8 4.8%
Electro-chemistry 2 8 4.8%
Solid State 1 4 2.4%
Surface Chemistry 1 4 2.4%

 Mathematics Analysis

Topic wise Allocation of Marks

SUBJECT- TOPIC- SUBTOPIC # QUESTIONS TOTAL MARKS % WEIGHTAGE
MATHEMATICS 40 168 100.0%
Algebra 4 16 9.5%
Vector 4 16 9.5%
Binomial Theorem 1 4 2.4%
Binomial Theorem 1 4 2.4%
Complex Numbers 1 4 2.4%
Complex Numbers 1 4 2.4%
Coordinate Geometry 6 24 14.3%
Ellipse 2 8 4.8%
Hyperbola 1 4 2.4%
Parabola 3 12 7.1%
Differential Calculus 8 32 19.0%
Application of Derivatives 3 12 7.1%
Functions 2 8 4.8%
Limit, Continuity & Differentiability 3 12 7.1%
Integral Calculus 8 32 19.0%
Area under curve 1 4 2.4%
Definite integration 5 20 11.9%
Differential Equation 2 8 4.8%
Matrix & Determinants 2 8 4.8%
Matrices & Determinants 2 8 4.8%
Permutation & Combination 1 4 2.4%
Permutation & Combination 1 4 2.4%
Probability 3 12 7.1%
Probability 3 12 7.1%
Quadratic Equation 1 4 2.4%
Quadratic Equation 1 4 2.4%
Sequence & Series 2 12 7.1%
Sequence & Series 2 12 7.1%
Trigonometry 3 16 9.5%
Inverse Trigonometric function 1 4 2.4%
Solution of Triangle 1 8 4.8%
Trigonometric equation 1 4 2.4%

JEE (Advance) 2015 Cut-off

JEE (Advanced) 2015: Official Cut-off
Category % Reservation Cut-off Marks % Cutoff
Open 50.50% 176 35.00%
OBC 27.00% 158 31.50%
SC 15.00% 88 17.50%
ST 7.50% 88 17.50%
Total 100.00%
  • For JEE (Advanced) 2015 Rank Predictor Please Click Here
  • For JEE (Advanced) 2015 Answer Key, Solution and Subject-Wise Discussion Please Click Here

86 thoughts on “JEE (Advanced) 2015: A Detailed Analysis by Resonance Expert Team”

  2. Is there any chance cut off for obc fall to about 117. Because question was difficult and negative marking was high. 62% ques are negative marks category with -2 marks compared to 50% in 2014 with -1 negative mark. Can 31.5% rule can be removed out due to lesser no eligible candidate ??

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  17. According to reso .predictor…my rank is 1200 on 283 marks.can u tell me on what basis the rank has been predicted and hw accurate it is according to previous years.

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  20. As per 2014 CML, a score of 193 out of 360 in that year would have placed the candidate in Rank 3000. What do you think will be the corresponding score (out of maximum 504 this year) for a Rank of 3000 in this year’s JEE Advanced?

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  24. sir i am gettiing 365 by allen keys,378 with chaitanya key and 370 with resonance keys.is there any chance of keys released by iit Bombay to be same as coaching classes key or will it change for some answers?

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  28. my marks in jee advanced-2015 are between 170-180.Can I be able to get a seat in IITs. Since the difficulty level of the paper is raised to an high extent and there negative marking also. should not the cut off be down this year around 140-150.

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  31. now that the cutt off is 124 , will the predicted rank by resonance change.
    now what should be my predicted rank.
    jee adv. score 194
    general category

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    • No, the predicted rank is still the same. Since last year cutoff was 176, 19000+ students were declared qualified, this year we predicted 12000+ students will be declared qualified if the cutoff remains 176. But as now the cut off is decreased, the number of students qualified will be more than 12000.

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  35. If I have 2 option iit bhu metallurgy and nit trichy mechanical . Which of the two should I choose . I want to study mechanical . So should I go to iit bhu on the risk of branch change or I should go to nit trichy

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  36. I have scored 143 marks in JEE advanced and according to your predictor rank will be at around 19000. Is there any chance to secure a seat in any IIT? Please reply, thanks in advance.

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  38. last year metallurgy(4 yr) last cutt off was 5800 in IIT BHU(banaras) and my rank is 6244 . This time joint counselling is happening so can i get BHU METALLURGY?

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  40. Sir last year metallurgy(4 yr) last cutt off was 5800 in IIT BHU(banaras) and my rank is 6244 . This time joint counselling is happening so can i get BHU METALLURGY?

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  45. I am a new comers in study for preparation of IIT jee advance and mains .my classessay have been started from 5-4-2016. In my resonance jee preparation book everything is given in short.I want to prepare excellently .so how should I study.

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