JEE Main 2015 Question Paper Analysis

JEE Main 2015 was conducted on 4th April 2015 in offline mode in centres within India and abroad.
A total of 11.2 Lakh students would have appeared for this important national exam. The exam was conducted from 9.30 to 12.30 hrs.

There were 4 versions for JEE MAIN 2015 - A, B, C and D. The order of subjects in each version was different; likewise the options for each question were shuffled too in different versions; there were NO Assertion-Reasoning type questions in the paper, same like last year. But the total marks and the number of questions in ALL versions were the same.

Version

Order of Subjects

A

Physics, Chemistry, Mathematics

B

Chemistry, Mathematics, Physics

C

Mathematics, Physics, Chemistry

D

Physics, Mathematics, Chemistry



Mathematics Part
Mathematics part of JEE Main 2015 was challenging as far as a student is concerned. Even a well prepared student might not identify all 'easy' questions after he/ she avoided the traps set up in between. The paper has only about 27% of marks from ‘easy’ category questions and over 50% of the questions are of medium difficulty level. A few questions that posed difficulty are concept-based and tricky in nature.

There was only one question each from Statistics and Mathematical Reasoning and two direct questions from trigonometry.
Tenth Class
Algebra, Coordinate Geometry and Differential Calculus (as expected) had major shares. Topic-wise analysis is as following:
Tenth Class
  1. Algebra-11
  2. Caluclus-7
  3. 2d-Geometry-5
  4. 3D,Vectors-3
  5. Trignometry-2
  6. Probability+Statistics-2

  1. This year JEE Main Mathematics paper is bit more hard comparison to last year one.
  2. 4 questions are asked from previous year papers.
  3. 5 questions are asked from JEE Main Syllabus exclusively.
  4. Out of the 30 questions, 12 questions are easy, 5 questions are lengthy, 8 questions are conceptual and 5 are tough questions.
  5. Class XI and XII carried equal weightages unlike 40:60 ratio.
  6. A score of 50-55 can be considered as a good score of an average student.
  7. Two Mixed concept questions problems are difficult and lengthy.
  8. There were no 'Assertion Reasoning' type questions.
Topic-Wise Distribution

Topic

2014

2015

Sets, Relations and Functions

2

2

Limits, Continuity & Differentiability

2

2

Application of Derivatives

1

1

Indefinite Integrals, Definite Integrals & Area under the Curve

3

3

Cartesian coordinates & Straight Line

2

2

Circles

1

1

Conics

2

2

Quadratic Equations, Inequalities, Progressions

3

2

Complex Numbers

1

1

Binomial Theorem,

2

1

Permutation & Combination

-

1

Probability

1

1

Vectors

1

1

3-D Coordinate Geometry

2

2

Differential Equations

1

1

Trigonometric Ratios, Heights &distances

2

2

Matrices & Determinants

1

2

Mathematical Logic

1

1

Statistics

1

1

sequences

1

1



Physics Part
This year the overall difficulty level of the Physics part is slightly on the higher side. Some questions were time consuming; some areas like Wave Optics, Properties Of Liquids etc. were not represented in the paper and Thermodynamics has suddenly become an area of importance in this year's JEE Main paper. Percentage of difficult questions has gone down compared to JEE Main 2014, but due to the decrease in easy questions and the increase in medium level questions, the Physics part of the paper was rated 'difficult' by students.

The overall difficulty level of the Physics part is represented in the graph below and it is very clear that the number of 'easy' questions has gone down.
Tenth Class
The topic wise distribution of the questions is shown below:
Tenth Class
  1. 70% questions are explicitly derivable from NCERT.
  2. Emphasis was more on basic concepts; and analytical aptitude was needed in many questions.
  3. Questions on the whole had almost the same difficulty level, if compared to JEE Mains 2014.
  4. 9 to 10 questions are easy, 11 t0 12 questions are moderate and others are very difficult.

Chapters

Topic name

No of Question

Total Marks

Electrodynamics

Capacitance

1

4

Current Electricity

2

8

Electromagnetic Field

1

4

E.M.I

2

8

Electrostatic

2

8

Heat and thermodynamics

Heat Transfer

1

4

KTG and Thermodynamics

2

8

Mechanics

Center of mass

1

4

Fluid Mechanics& Properties of Matter, Newton laws

2

8

Gravitation

1

4

Motion in Straight Line

1

4

Rigid Body Dynamic

2

8

Surface Tension

0

0

Unit & Dimension

1

4

Modern physics

Em waves& Communication

2

8

Modern Physics

2

8

Semi-conductor

0

0

Optics

Geometrical and Physical Optics

2

8

Wave Optics

1

4

SHM & Waves

SHM

1

4

String Waves and Sound Wave

1

4

30

120



Chemistry Part
Majority of the questions in the Chemistry part of the JEE Main 2015 are in the ranged between easy to moderate levels. The overall difficulty level of this year is less compared to last year. Usually application level questions are expected from Physical and Organic chemistry areas, but this year questions from these two areas were quite straight in nature. But one question from Inorganic Chemistry was based on practical part and it would have been difficult to answer. Moreover, this year's contribution from Inorganic Chemistry is more compared to previous years.

As indicated in the following pie chart, about 53% of the paper was considered 'Easy' and only about 7% of the paper was 'difficult' and hence this was a student friendly paper.
Tenth Class
The topic wise analysis of the JEE Main 2015 paper for Chemistry is shown below.
Tenth Class
Topic wise marks allocation Chemistry
  1. 80% questions are directly from NCERT.
  2. 13 to 14 questions are very easy.
  3. Emphasis was given on logical concepts in all parts of chemistry of Classes XI &XII.
  4. Four to five difficult questions may have consumed more time.
  5. Mechanism based questions are not given in Organic Chemistry.

Topic Name

No of Question

Marks

Inorganic Chemistry -1

Chemical Bonding

2

8

p- Block & s Block

3

12

Periodic Table & Periodicity

1

4

Inorganic Chemistry -2

d-Block & f Block

1

4

Transition Elements &Co-ordination

3

12

Organic Chemistry -1

General Organic Chemistry

2

8

Organic Chemistry -2

Alkyl halide, Alcohol& Ether, Carbohydrate, Amino Acids & polymers

4

16

Carboxylic Acid & Their Derivative

3

12

Practical Organic Chemistry

1

4

Physical chem-1

Atomic Structure

1

4

Gaseous State

1

4

Ionic Equilibrium

2

8

Mole Concept

1

4

Thermodynamic & Thermo Chemistry

1

4

Physical chem-2

Chemical Kinetic

1

4

Electrochemistry

1

4

Solid State

1

4

Solution

1

4

Grand Total

30

120



Expected Cut offs for Advanced
General Category –
118 to120
OBC – 75 to 77
SC – 55 to 57
ST- 50 to 53

118-120 for General category candidates, 75-77 for OBC, 55-57 for SC and 50 to 53 for ST category
Published on 4/6/2015 6:42:00 PM
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JEE Main 2015 Question Paper Analysis

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