The JEE main paper consisted of a total of 90 questions and each question was awarded 4 marks for the correct answer, -1 for an incorrect answer and 0 for an unattempted question. Overall the paper was a bit tougher on Physics side while Maths and Chemistry sections were comparatively easier. Below is the analysis of JEE Mains exam section wise.
Physics section was moderately difficult as it had fairly an equal distribution among easy, moderate and hard questions. The questions which are asked from 12th class syllabus are comparatively easier than the 11th class. Around 10-12 questions are concept based, 7-8 questions are direct formula based and some questions also involved lengthy calculations and answers based on calculus. If the student has a good hold on memorizing the formula and is able to apply the right concept to the questions, he/she can easily score 70-80% marks in this section by investing around 45-50 minutes.
Chapter/Topic | Total Marks | Chapter/Topic | Total Marks |
Kinematics |
4 |
Electrostatics |
12 |
Laws of motion |
4 |
Current Electricity |
16 |
Work Energy and Power |
8 |
Magnetic Effects of Current and Magnetism |
12 |
Gravitation |
4 |
Electromagnetic induction & Alternating Current |
4 |
Rotational Motion |
8 |
Electromagnetic Waves |
4 |
Properties of Solids and Liquids |
8 |
Optics |
8 |
Thermodynamics |
4 |
Dual Nature of Matter and Radiation |
4 |
Kinetic theory of Gases |
4 |
Atoms And Nuclei |
4 |
Oscillations and Waves |
8 |
Electronic devices |
4 |
Overall the maths section of the paper was moderate to easy. Some questions were tricky. Most questions were based on basic concepts. Questions asked from class 12 was tougher and lengthier than class 11. More questions were asked from class 11. 12-15 questions are direct formula based and some questions also involved lengthy calculations. If the student has good command on basic concepts, he/she can easily score 70-85% marks in this section by investing around 50-70 minutes.
A breakup of marks between different chapters/topics of the Maths section:
Chapter/ Topic |
Total Marks | Chapter/ Topic | Total Marks |
Binomial theorem and its simple applications |
20 |
Matrices and Determinants |
8 |
Co-ordinate Geometry |
12 |
Sequence and series |
4 |
Complex numbers and quadratic equations |
8 |
Sets, Relations and Functions |
4 |
Differential equations |
12 |
Statistics and Probability |
4 |
Integral Calculus |
12 |
Three Dimensional Geometry |
8 |
Limit, continuity, and differentiability |
12 |
Trigonometry |
8 |
Mathematical Induction |
4 |
Vector Algebra |
4 |
The Chemistry section asked in JEE Mains exam consisted of 120 marks. As given in the table below, a total of 15 questions was asked from class 11 and 15 questions were asked from class 12. The chemistry section in this exam was easy vis-a-vis the other sections that are, physics and mathematics. In this section, 16 questions were easy, 12 questions were medium and 2 questions were tough, the detailed analysis of the difficulty level of questions is given in the table below. As this section was quite easy, so students were able to save their time for other sections.
The easy, medium and difficult questions were asked from the following chapters:
Easy: Chemical Bonding, Organic compounds containing Oxygen, Organic compounds containing Nitrogen, Metallurgy, p-block, Periodic classification of elements, Mole concept, Solutions, Haloalkanes and haloarenes, Hydrogen, General Organic Chemistry, Thermodynamics, Electrochemistry.
Medium: Organic compounds containing Oxygen, Organic compounds containing Nitrogen, Coordination compounds, States of matter, Environmental chemistry, s-block, Equilibrium, Surface chemistry, Haloalkanes and haloarenes, Atomic Structure.
Tough: Chemical kinetics, Organic compounds containing Nitrogen.
Chapter/ Topic |
Total Marks |
Chapter/ Topic |
Total Marks |
Physical Chemistry |
44 |
Inorganic Chemistry |
40 |
Chemical Bonding |
8 |
Coordination Compounds |
4 |
States of Matter (Gaseous) |
4 |
Process and isolation of Elements |
8 |
Mole Concept |
4 |
p-block |
8 |
Solutions |
4 |
Classification of Elements and Periodic table |
4 |
Chemical Kinetics |
4 |
Environmental Chemistry |
8 |
Equilibrium |
4 |
s-block |
4 |
Surface Chemistry |
4 |
Hydrogen |
4 |
Atomic Structure |
4 |
Organic Chemistry |
36 |
Thermodynamics |
4 |
Organic Compounds Containing Oxygen |
12 |
Electrochemistry |
4 |
Organic compounds containing Nitrogen |
12 |
Haloalkanes and Haloarenes |
8 |
General Organic Chemistry |
4 |
Two complexes and
are violet and yellow coloured ,respectively. The incorrect statement regarding them
is:
a) |
|
b) |
both are paramegnetic with three unpaired electrons. |
c) | both absorb energies correponding to their complementary colors. |
d) |
|
Correct Option: a
View SolutionThe correct decreasing order for acid strength is :
a) |
|
b) |
|
c) | d) |
Correct Option: d
View SolutionThe major product of following reaction is:
a) |
|
b) |
|
c) | d) |
Correct Option: c
View SolutionThe highest value of the calculated spin-only magnetic moment (in BM) among all the transition metal complexes is :
a) |
5.92 |
b) |
6.93 |
c) | 3.87 |
d) | 4.90 |
Correct Option: a
View Solution0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10m3 at 1000 K .Given R is the gas constant in JK-1 mol-1 , x is:
a) |
|
b) |
|
c) | d) |
Correct Option: d
View SolutionThe one that is extensively used as a piezoelectric material is:
a) |
tridymite |
b) |
amorphous silica |
c) | quartz |
d) | mica |
Correct Option: c
View SolutionCorrect statements among a to d regarding silicones are :
(a) They are polymers with hydrophobic character
(b) They are biocompatible
(c) In general, they have high thermal stability and low dielectric strength.
(d) Usually, they are resistant to oxidation and used as greases
a) |
(a), (b), (c) and (d) |
b) |
(a), (b) and (c) only |
c) | (a) and (b) only |
d) | (a), (b) and (d) only |
Correct Option: d
View SolutionThe major product of the following reaction is:
a) |
|
b) |
|
c) | d) |
Correct Option: a
View SolutionIn general ,the properties that decrease and increase down a group in the periodic table ,respectively are :
a) |
atomic radius and electronegativity |
b) |
electron gain enthalpy and electronegativity |
c) | electronegativity and atomic radius |
d) | electronegativity and electron gain enthalpy |
Correct Option: c
View SolutionA solution of sodium sulfate contains 92g of ions per kilogram of water. The molality of
ions in that solution in mol Kg-1 is:
a) |
12 |
b) |
4 |
c) | 8 |
d) | 16 |
Correct Option: b
View SolutionThe correct match between item I and item -II is
Item-I Item-II
(drug) (test)
A chloroxylenol P carbylamine test
B Norethindrone Q sodium hydrogen carbonate test
C Sulphapyridine R ferric choride test
D Penicillamine S Baeyer's test
a) |
A→R; B→P;C→S;D→Q |
b) |
A→Q; B→S;C→P;D→R |
c) | A→R; B→S;C→P;D→Q |
d) | A→Q; B→P;C→S;D→R |
Correct Option: c
View SolutionA water sample has ppm level concentration of the following metals: the metal that makes the water sample unsuitable for drinking is:
a) |
Cu |
b) |
Mn |
c) | Fe |
d) | Zn |
Correct Option: b
View SolutionThe anodic half-cell of lead-acid battery is recharged using electicity of 0.05 faraday .The amount of electrolyzed in g during the process is ;(Molar mass of
)
a) |
22.8 |
b) |
15.2 |
c) | 7.6 |
d) | 11.4 |
Correct Option: c
View SolutionWhich one of the following statement regarding Henry's law is not correct?
a) |
Higher the value of |
b) |
Different gases have different |
c) | The mole fraction of the gas in the solution in vapour phase is proportional to the partial pressure of the gas |
d) | The value of |
Correct Option: a
View SolutionThe following results were obtained during kinetic studies of the reaction
2A + B→Product:
Experiment |
[A] (in mole L-1) |
[B] (in mole L-1) |
Initial rate of reaction (in mole L-1min-1) |
I | 0.10 | 0.20 |
6.93 X 10-3 |
II | 0.10 | 0.25 |
6.93 X 10-3 |
III | 0.20 | 0.30 | 1.386 X 10-2 |
The time (in minutes) required to consume half of A is:
a) |
5 |
b) |
10 |
c) | 1 |
d) | 100 |
Correct Option: a
View SolutionMajor product of the following reaction is:
a) |
|
b) |
|
c) | d) |
Correct Option: d
View SolutionThe alkaline earth metal nitrate that does not crystallise with water molecules, is:
a) |
|
b) |
|
c) | d) |
Correct Option: d
View Solution20 mL of 0.1 M H2SO4 solution is added to 30 mL of 0.2 M NH4OH solution. The pH of the resultant mixture is: [pkb of NH4OH = 4.7]
a) |
5.2 |
b) |
9 |
c) | 5 |
d) | 9.4 |
Correct Option: b
View SolutionAdsorption of gas follows Freundlich adsorbtin isotherm. In the given plox ,x is the mass of the gas on mass m of the adsorbent at pressure P. is propotional to: