IIT JEE 2007 Analysis

 

Dear Students,

 

Hope you have done well in IIT-JEE 2007. Here, we present the detailed analysis of the paper by the Subject Experts and Professors at T.I.M.E.

 

Structure of the Paper
Key for Paper-I
Key for Paper-II
Detailed Solution for Paper-I 

Detailed Solution for Paper-II 

Categorization of Questions(Easy, Medium, Difficult) for Paper-I
Categorization of Questions(Easy, Medium, Difficult) for Paper-II 

Distribution of marks across various areas - Paper-I
Distribution of marks across various areas - Paper-II 

 

 

Structure of the Paper


IIT-JEE 2007 had 2 papers - Paper I and Paper II. The duration of each paper was 3 hours. Each paper consisted of 66 Questions. Both the papers had 3 parts each – Physics, Chemistry and Mathematics. Each part had 22 Questions.

Each of the three parts - Physics, Chemistry and Mathematics - was divided into four sections. The format of the questions in any given section is the same across the three parts (Physics, Chemistry and Mathematics) and across the 2 papers (Paper I and Paper II).

The details of the sections are given below.

 

 

No. of Qns

Title of the Section

Marks per Correct Answer

Number of Choices

Penalty for Wrong Answer

Maximum Marks for the Section

Section 1

9

Straight Objective Type

3

4

-1

27

Section 2

4

Assertion-Reason Type

3

4

-1

12

Section 3

6

Linked Comprehension Type

4

4

-1

24

Section 4

3

Matrix-Match Type

6

0

0

18

Total

22

 

 

 

 

81

 

 

Total marks in each part(subject) = 81

Total Marks  in each part(subject) = 81 X 3 = 243

Total Marks in IIT-JEE 2007 = 2 X 243 = 486

 

 

Key for Paper 1

 

CODE 0

 

 

PART I

 

1        2        3        4        5        6        7        8        9        10

A        B        B        A        D       C        C        A        B        C

11      12      13      14      15      16      17      18      19

B        C        B        C        A        B        A        D       C

 

20

21

22

A - p, q,

B - r, s

C - r, s

D - r, s

A - q

B - r, s

C - s

D - p, q, r, s

A - p, r

B - q, s

C - p

D - q, r

 

 

 

 

PART II

 

23      24      25      26      27      28      29      30      31      32

A        D       B        B        B        C        D       A        B        A

33      34      35      36      37      38      39      40      41

C        D       B        A        C        A        B        D       D

 

42

43

44

A - p, q, s

B - p, r, s

C - q, s

D - q, s

A - p, s

B - q, r

C - p, r

D - s

A - p, q, s

B - p

C - r

D - p

 

 

 

  

PART III

 

45      46      47      48      49      50      51      52      53      54

D       A        C        A        A        A        C        D       C        D

55      56      57      58      59      60      61      62      63

A        C        D       B        D       B        C        B        D

 

64

65

66

A - r

B - q

C - p

D - s

A - p, q, r

B - p, s

C - r, s

D - p, q

A - s

B - s

C - p

D - r

 

 

Key for Paper II

 

CODE 0

 

PART I

 

1        2        3        4        5        6        7        8        9        10

b        b        d        d        b        b        c         a        a        d

11      12      13      14      15      16      17      18      19

b        c         b        d        a        a        a        c         b

 

20

21

22

A - p

B - q, r

C - p

D - q,r

A - q,r

B - p

C - q,r

D - q

A - s

B - q

C - p,q

D - q,r

 

 

 

 

 

PART II

 

23      24      25      26      27      28      29      30      31      32

d        d        b        a        a        a        c         a        d        b

33      34      35      36      37      38      39      40      41

c         c         c         c         d        a        c         c         b

 

42

43

44

A - p,s

B - q

C - p,q

D - p

A - p,s

B - q

C - q,r,s

D - q,r

A - p,s

B - p,q

C - q

D - q,r

 

 


 

PART III

 

45      46      47      48      49      50      51      52      53      54

C        D       C        D       C        B        B        C        C        D

55      56      57      58      59      60      61      62      63

A        B        C        C        A        B        B        A        A

 

64

65

66

A - p

B - q, s

C - q, s

D - p, r, s

A - p, q, r

B - q, s

C - p

D - q, s

A - p, q

B - p, q

C - q, r

D - q, r

 

 

Categorization of questions (Easy/Medium/Difficult)  for Paper I

 

 

EASY:- Easy Questions are defined as those questions that can be answered by a student who knows the concept under question. It is a direct application of the concept. A student is expected to have attempted all the EASY Category Questions.

 

MEDIUM:- Medium Difficulty Questions are those questions that may involve more than one concept. A well-prepared student should be able to identify at least 75% of these and solve them correctly

 

DIFFICULT:- Difficult Questions are those Questions are those will definitely involve multiple concepts and are tricky. The students may be led to think away from the ideal method of problem solving. It will require good effort even from the well-prepared student to identify the Difficult ones and categorize them accordingly.

 

 

Mathematics:-

 

CODE 0

 

 

 

 

 

Mathematics

Classification of Question

Section

 

Question No:45

M

Section 1

Question No:46

D

Section 1

Question No:47

M

Section 1

Question No:48

D

Section 1

Question No:49

M

Section 1

Question No:50

M

Section 1

Question No:51

E

Section 1

Question No:52

M

Section 1

Question No:53

E

Section 1

Question No:54

M

Section 2

Question No:55

E

Section 2

Question No:56

E

Section 2

Question No:57

E

Section 2

Question No:58

M

Section 3

Question No:59

E

Section 3

Question No:60

E

Section 3

Question No:61

M

Section 3

Question No:62

M

Section 3

Question No:63

M

Section 3

Question No:64

D

Section 4

Question No:65

M

Section 4

Question No:66

E

Section 4

 

 

 

 

 

 

Legend

 

 

E-Easy

 

 

M-Medium Difficulty Level

 

 

D-Difficult

 

 

 

Easy

8 Questions

29 Marks

Medium Difficulty

11 Questions

40 Marks

Difficult

3 Questions

12 Marks

 

Chemistry:-

 

CODE 0

 

 

 

 

 

Chemistry

Classification of Question

Section

 

Question No:23

E

Section 1

Question No:24

M

Section 1

Question No:25

E

Section 1

Question No:26

E

Section 1

Question No:27

M

Section 1

Question No:28

M

Section 1

Question No:29

M

Section 1

Question No:30

M

Section 1

Question No:31

M

Section 1

Question No:32

E

Section 2

Question No:33

E

Section 2

Question No:34

E

Section 2

Question No:35

E

Section 2

Question No:36

E

Section 3

Question No:37

E

Section 3

Question No:38

M

Section 3

Question No:39

E

Section 3

Question No:40

M

Section 3

Question No:41

E

Section 3

Question No:42

M

Section 4

Question No:43

E

Section 4

Question No:44

D

Section 4

 

 

 

 

 

Easy

12 Questions

43 Marks

Medium Difficulty

9 Questions

32 Marks

Difficult

1 Question

6 Marks

 

 

 

Physics:-

 

 

CODE 0

 

 

 

 

 

Physics

Classification of Question

Section

 

Question No:1

E

Section 1

Question No:2

M

Section 1

Question No:3

D

Section 1

Question No:4

E

Section 1

Question No:5

E

Section 1

Question No:6

M

Section 1

Question No:7

E

Section 1

Question No:8

E

Section 1

Question No:9

M

Section 1

Question No:10

E

Section 2

Question No:11

E

Section 2

Question No:12

M

Section 2

Question No:13

E

Section 2

Question No:14

E

Section 3

Question No:15

M

Section 3

Question No:16

E

Section 3

Question No:17

E

Section 3

Question No:18

M

Section 3

Question No:19

D

Section 3

Question No:20

M

Section 4

Question No:21

D

Section 4

Question No:22

E

Section 4

 

 

 

Easy

12 Questions

42 Marks

Medium Difficulty

7 Questions

26 Marks

Difficult

3 Question

13 Marks

 

 

Distribution of Marks across various Areas – Paper I

 

Distribution of Marks across various Areas – Paper 1 - Mathematics

Subject Area

 

No of Questions

Marks

Total

Marks

% Distribution

Algebra

Section I

3

3

9

 

 

 

Section II

1

3

3

 

 

 

Section III

3

4

12

 

 

 

Section IV

0

0

0

24

30

Trigonometry

Section I

1

3

3

 

 

 

Section II

0

0

0

 

 

 

Section III

0

0

0

 

 

 

Section IV

0

0

0

3

4

Coordinate Geometry

Section I

1

3

3

 

 

 

Section II

1

3

3

 

 

 

Section III

3

4

12

 

 

 

Section IV

0

0

0

18

22

Vectors, 3D, Matrices

Section I

1

3

3

 

 

 

Section II

1

3

3

 

 

 

Section III

0

 

0

 

 

 

Section IV

1

6

6

12

15

Differential Calculus

Section I

3

3

9

 

 

 

Section II

0

 

0

 

 

 

Section III

0

0

0

 

 

 

Section IV

1

6

6

15

19

Integral Calculus

Section I

0

 

0

 

 

 

Section II

1

3

3

 

 

 

Section III

0

0

0

 

 

 

Section IV

1

6

6

9

11

 

 

 

 

 

81

100

 

 

 

 

 

 

Distribution of Marks across Various Areas– Paper 1 - Chemistry

 

 

Subject Area

 

No of Questions

Marks

Total

Marks

% Distribution

Atomic Structure & Chemical Bonding

Section I

3

3

9

 

 

 

Section II

2

3

6

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

15

19

Metallurgy

Section I

1

3

3

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

3

4

Hydrocarbons

Section I

2

3

6

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

6

7

Basic Principles in Organic Chemistry

Section I

1

3

3

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

3

4

Dilute Solutions

Section I

1

3

3

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

3

4

Thermodynamics

Section I

1

3

3

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

3

4

P Block Elements

Section I

1

3

3

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

3

4

12

15

19

Surface Chemistry

Section I

0

 

0

 

 

 

Section II

1

3

3

 

 

 

Section III

0

 

0

 

 

 

Section IV

0

 

0

3

4

Electrochemistry

Section I

0

 

0

 

 

 

Section II

0

 

0

 

 

 

Section III

3

4

12

 

 

 

Section IV

0

 

0

12

15

Coordination Compounds

Section I

0

 

0

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

1

6

6

6

7

Biomolecules / Polymers

Section I

0

 

0

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

1

6

6

6

7

States of Matter

Section I

0

 

0

 

 

 

Section II

0

 

0

 

 

 

Section III

0

 

0

 

 

 

Section IV

1

6

6

6

7

 

 

 

 

81

81

100

 

 

 

 

 

 

 

 

 

                                                   

Subject Area

Marks

Physical Chemistry

42

Organic Chemistry

15

Inorganic Chemistry

24

 

81

 

 

Distribution of Marks Across Various Areas:- Physics

 

Subject Area

 

No of Questions

Marks

Total

Marks

% Distribution

Mechanics

Section I

1.00

3.00

3.00

 

 

 

Section II

2.00

3.00

6.00

 

 

 

Section III

3.00

4.00

12.00

 

 

 

Section IV

1.00

6.00

6.00

27.00

33.33

Electrostatics and Current Electricity

Section I

4.00

3.00

12.00

 

 

 

Section II

0.00

3.00

0.00

 

 

 

Section III

0.00

4.00

0.00

 

 

 

Section IV

0.00

6.00

0.00

12.00

14.81

Electromagnetism

Section I

0.00

3.00

0.00

 

 

 

Section II

0.00

3.00

0.00

 

 

 

Section III

0.00

4.00

0.00

 

 

 

Section IV

1.00

6.00

6.00

6.00

7.41

Optics

Section I

2.00

3.00

6.00

 

 

 

Section II

1.00

3.00

3.00

 

 

 

Section III

0.00

4.00

0.00

 

 

 

Section IV

0.00

6.00

0.00

9.00

11.11

Modern Physics

Section I

2.00

3.00

6.00

 

 

 

Section II

1.00

3.00

3.00

 

 

 

Section III

0.00

4.00

0.00

 

 

 

Section IV

1.00

6.00

6.00

15.00

18.52

Thermodynamics

Section I

0.00

3.00

0.00

 

 

 

Section II

0.00

3.00

0.00

 

 

 

Section III

3.00

4.00

12.00

 

 

 

Section IV

0.00

6.00

0.00

12.00

14.81

 

 

 

 

 

81.00

100.00

 

 

 

 

 

 

Categorization of questions (Easy/Medium/Difficult)  for Paper II

 

(CODE 0)

 

 

Physics

 

 

 

 

 

Physics

Classification of Question

Section

Question No:1

E

Section 1

Question No:2

M

Section 1

Question No:3

E

Section 1

Question No:4

M

Section 1

Question No:5

D

Section 1

Question No:6

E

Section 1

Question No:7

E

Section 1

Question No:8

M

Section 1

Question No:9

M

Section 1

Question No:10

E

Section 2

Question No:11

E

Section 2

Question No:12

D

Section 2

Question No:13

E

Section 2

Question No:14

E

Section 3

Question No:15

M

Section 3

Question No:16

D

Section 3

Question No:17

E

Section 3

Question No:18

M

Section 3

Question No:19

D

Section 3

Question No:20

D

Section 4

Question No:21

M

Section 4

Question No:22

E

Section 4

 

 

 

Level of difficulty

 

no of questions

marks

Easy

11  (50%)

39 (48.1%)

moderate

7   (31.8%)

26 (32.0%)

Difficult

4   (18.2%)

16 (19.8%)

 

 

Mathematics:-

 

CODE 0

 

 

 

 

 

Mathematics

Classification of Question

Section

Question No:45

E

Section 1

Question No:46

M

Section 1

Question No:47

M

Section 1

Question No:48

E

Section 1

Question No:49

E

Section 1

Question No:50

E

Section 1

Question No:51

D

Section 1

Question No:52

M

Section 1

Question No:53

M

Section 1

Question No:54

E

Section 2

Question No:55

E

Section 2

Question No:56

E

Section 2

Question No:57

E

Section 2

Question No:58

E

Section 3

Question No:59

M

Section 3

Question No:60

M

Section 3

Question No:61

E

Section 3

Question No:62

D

Section 3

Question No:63

D

Section 3

Question No:64

M

Section 4

Question No:65

M

Section 4

Question No:66

E

Section 4

 

 

 

 

 

 

 

Legend

 No. 0f questions 

 

E-Easy

 11

 

M-Medium Difficulty Level

 8

 

D-Difficult

 3

 

 

 

 

Easy

11(50%)

38(47%)

Medium Difficulty

8(36%)

32(40%)

Difficult

3(14%)

11(13%)

 

 

Distribution of Marks across various Areas – Paper II

 

Distribution of Marks Across Various Areas: Paper II Physics

 

Subject Area

 

No of Questions

Marks per question

Total per section

Marks

% Distribution

Mechanics

Section I

5

3

15

 

 

 

Section II

2

3

6

 

 

 

Section III

3

4

12

 

 

 

Section IV

1

6

6

39

48.1

Electrostatics and Current Electricity

Section I

2

3

6

 

 

 

Section II

 

 

 

 

 

 

Section III

 

 

 

 

 

 

Section IV

 

 

 

6

7.4

Electromagnetism

Section I

1

3

3

 

 

 

Section II

1

3

3

 

 

 

Section III

 

 

 

 

 

 

Section IV

1

6

6

12

14.8

Optics

Section I

3

4

12

 

 

 

Section II

 

 

 

 

 

 

Section III

 

 

 

 

 

 

Section IV

 

 

 

12

14.8

Modern Physics

Section I

1

3

3

 

 

 

Section II

 

 

 

 

 

 

Section III

 

 

 

 

 

 

Section IV

 

 

 

3

3.7

Thermodynamics

Section I

1

3

3

 

 

 

Section II

 

 

 

 

 

 

Section III

 

 

 

 

 

 

Section IV

1

6

6

9

7.4

 

 

 

 

 

81.00

100.00

 

 Distribution of Marks across various Areas

 

Distribution of Marks across various Area – Paper 2 - Mathematics

Subject Area

 

No of Questions

Marks

Total

Marks

% Distribution

Algebra

Section I

3

3

9

 

 

 

Section II

0

3

0

 

 

 

Section III

3

4

12

 

 

 

Section IV

0

0

0

21

25.9%

Trigonometry

Section I

0

3

0

 

 

 

Section II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

1

6

6

6

7.4%

Coordinate Geometry

Section I

2

3

6

 

 

 

Section II

2

3

6

 

 

 

Section III

0

4

0

 

 

 

Section IV

1

6

6

18

22.2%

Vectors, 3D, Matrices

Section I

1

3

3

 

 

 

Section II

1

3

3

 

 

 

Section III

0

           4

0

 

 

 

Section IV

0

6

0

6

7.4%

Differential Calculus

Section I

1

3

3

 

 

 

Section II

1

          3

3

 

 

 

Section III

3

4

12

 

 

 

Section IV

1

6

6

24

29.6%

Integral Calculus

Section I

2

          3

6

 

 

 

Section II

0

3

0

 

 

 

Section III

0

0

0

 

 

 

Section IV

0

6

0

6

7.4%

 

 

 

 

 

81

100

 

 

Distribution of Marks across Various Areas– Paper 2 - Chemistry

 

 

Subject Area

 

No of Questions

Marks

Total

Marks

% Distribution

 

Atomic Structure & Chemical Bonding

Section I

0

3

0

 

 

 

 

Section II

1

3

3

 

 

 

 

Section III

0

          0  

0

 

 

 

 

Section IV

0

           0                 

0

3

3.7%

 

Metallurgy

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

0

0

 

Hydrocarbons

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

0

0

 

Basic Principles in Organic Chemistry

Section I

1

3

3

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

3

3.7%

 

Dilute Solutions

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

0

0

 

Thermodynamics

Section I

1

3

3

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

3

3.7%

 

P Block Elements

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

0

0

 

Surface Chemistry

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

0

0

 

Electrochemistry

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

2

           4

8

 

 

 

 

Section IV

0

6

0

8

9.9%

 

Coordination Compounds

Section I

1

3

3

 

 

 

 

Section II

0

           3

           0

 

 

 

 

Section III

0

           4

          0

 

 

 

 

Section IV

0

6

0

3

3.7%

0

Biomolecules / Polymers

Section I

0

3

0

 

 

 

 

Section II

1

3

3

 

 

 

 

Section III

0

4

0

 

 

 

 

Section IV

0

6

0

3

3.7%

 

States of Matter

Section I

0

3

0

 

 

 

 

Section II

0

           3

0

 

 

 

 

Section III

0

           4

0

 

 

 

 

Section IV

0

6

0

0

0

 

 

 

 

 

 

 

 

 

 

Qualitative analysis

Section

 I

1

3

3

 

 

 

Section

 II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

0

6

0

3

3.7%

Aldehyde and ketone

Section

I

1

3

3

 

 

 

Section

II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

0

6

0

3

3.7%

Stereo chemistry

Section

 I

1

3

3

 

 

 

Section

 II

1

3

3

 

 

 

Section III

0

4

0

 

 

 

Section IV

0

6

0

6

7.4%

Nuclear chemistry

Section

I

1

3

3

 

 

 

Section

II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

0

6

0

3

3.7%

S block elements

Section

I

0

3

0

 

 

 

Section

 II

1

3

3

 

 

 

Section III

0

4

0

 

 

 

Section IV

0

6

0

3

3.7%

Purification and characterization of organic compounds

Section

I

0

3

0

 

 

 

Section

 II

0

3

0

 

 

 

Section III

1

4

4

 

 

 

Section IV

0

6

0

4

            4.9%

Phenols

Section

I

0

3

0

 

 

 

Section

 II

0

3

0

 

 

 

Section

III

3

4

12

 

 

 

Section IV

0

6

0

12

         14.8%

Organic reactions

Section

I

0

3

0

 

 

 

Section

 II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

1

6

6

6

            7.4%

Solid state

Section

I

0

3

0

 

 

 

Section

 II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

1

6

6

6

7.4%

Redox reaction

Section

I

1

3

3

 

 

 

Section

 II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

1

6

6

9

11.1%

Chemical kinetics

Section

I

1

3

0

 

 

 

Section

 II

0

3

0

 

 

 

Section III

0

4

0

 

 

 

Section IV

0

6

0

3

3.7%

 

 

 

 

 

81

100

 

CODE 0

 

 

 

 

 

Chemistry

Classification of Question

Section

Question No:23

M

Section 1

Question No:24

D

Section 1

Question No:25

M

Section 1

Question No:26

M

Section 1

Question No:27

M

Section 1

Question No:28

M

Section 1

Question No:29

E

Section 1

Question No:30

E

Section 1

Question No:31

M

Section 1

Question No:32

M

Section 2

Question No:33

M

Section 2

Question No:34

D

Section 2

Question No:35

D

Section 2

Question No:36

M

Section 3

Question No:37

E

Section 3

Question No:38

E

Section 3

Question No:39

E

Section 3

Question No:40

E

Section 3

Question No:41

M

Section 3

Question No:42

D

Section 4

Question No:43

M

Section 4

Question No:44

M

Section 4

 

 

Easy

6

22

Medium Difficulty

12

44

Difficult

4

15