There are two phases in Joint Entrance Examination (JEE) i.e., JEE Main and JEE Advanced. JEE Main is conducted by Central Board of Secondary Education (CBSE) while JEE Advanced is conducted by one of the IITs.

The offline exam for JEE Main is scheduled to be held on April 8, 2018 while the online exam will be conducted on April 16 and April 17, 2018. Now, there are only few months left for the examination.

Every aspirant who is going to appear for JEE Main 2018 wants to score maximum marks as the competition is increasing day by day. Every year lakhs of students appeared for the examination but only few get entry into the colleges of their choices.

**Most Important Questions for JEE Main & Advanced 2018**

Students always confused about the questions given below:

*What are the most important chapters for JEE Main 2018?*

*Do or die chapters for JEE Main?*

*What are the important topics of Mathematics for JEE Main 2018?*

*What are the important topics of Chemistry for JEE Main 2018?*

*What are the important topics of Physics for JEE Main 2018?*

*Will they get good rank if they cover only important topics?*

First of all CBSE does not allocate any weightage to any chapter. Students should concentrate on each and every topic/chapter of all subjects. But if students have less time for the preparation, then they can focus only on the important chapters as it is impossible to cover all chapters in a very less time.

After analyzing the pattern of last few years’ papers of JEE Main, Subject Experts have prepared a list of the important chapters along with the important topics. It will help you in your preparation for the examination.

Students will definitely get good score in Mathematics if they prepare well for it. All the formulae should be at finger tips. If you face any difficulty while recalling any formula in the examination, then you will not be able to get good marks.

The important chapters of Mathematics are given below:

S.No. |
Topics |
Important Subtopics |

1. |
Differential Calculus |
Intutive idea of limit, Limits of polynomials and rational functions, trignometric, exponential and logarithmic functions, Definition of derivative,The derivative of polynomial and trignometric functions, Continuity and differentiability, chain rule, derivatives of inverse trigonometric functions, derivative of implicit functions, Concept of exponential and logarithmic functions, Derivatives of logarithmic and exponential functions, Logarithmic differentiation, derivative of functions expressed in parametric forms, Second order derivatives, Rolle's and Lagrange's Mean Value Theorems and their geometric interpretation, rate of change of bodies, increasing/decreasing functions, tangents and normals, use of derivatives in approximation, maxima and minima (first derivative test and second derivative test), Simple problems |

2. |
Integral Calculus |
Integration as inverse process of differentiation, Integration of a variety of functions by substitution, by partial fractions and by parts, Evaluation of simple integrals of the following types and problems based on them, Fundamental Theorem of Calculus , Basic properties of definite integrals and evaluation of definite integrals, Applications in finding the area under simple curves, especially lines, circles/parabolas/ellipses, Area between any of the two above said curves, Definition, order and degree of differential equations, general and particular solutions of a differential equation, Formation of differential equation whose general solution is given, Solution of differential equations by method of separation of variables solutions of homogeneous differential equations of first order and first degree, Solutions of linear differential equation of the type dy/dx + py = q and dx/dy + px = q, where p and q are functions of y or constants |

3. |
Coordinate Geometry |
Straight Lines, Conic Sections (Circles, Parabola, Hyperbola, Ellipse), Three–dimensional Geometry |

4. |
Matrix & Determinants |
Concept, notation, order, equality, types of matrices, zero and identity matrix, transpose of a matrix, symmetric and skew symmetric matrices, Addition and multiplication and multiplication with a scalar, Determinant of a square matrix (up to 3 x 3 matrices), properties of determinants, minors, co-factors and applications of determinants in finding the area of a triangle, Adjoint and inverse of a square matrix, Consistency, inconsistency and number of solutions of system of linear equations by examples, |

5. |
Probability |
Occurrence of events, 'not', 'and' and 'or' events, exhaustive events, mutually exclusive events, Probability of an event, probability of 'not', 'and' and 'or' events,, Conditional probability, multiplication theorem on probability, independent events, total probability, Baye's theorem |

7. |
Trigonometry |
Measuring angles in radians and in degrees and conversion of one into other, Definition of trigonometric functions with the help of unit circle, Truth of the sin2x+cos2x=1, for all x, Signs of trigonometric functions, Domain and range of trignometric functions and their graphs, Expressing sin (x±y) and cos (x±y) in terms of sinx, siny, cosx & cosy and their simple application, Identities related to sin 2x, cos 2x, tan 2x, sin 3x, cos 3x and tan 3x, General solution of trigonometric equations of the type sin y = sin a, cos y = cos a and tan y = tan a, Definition, range, domain, principal value branch, graphs of inverse trigonometric functions, Elementary properties of inverse trigonometric functions, |

8. |
Sequence and Series |
Sequence and Series, Arithmetic Progression (A,P,), Arithmetic Mean (A,M,) Geometric Progression (G,P,), general term of a G,P,, sum of n terms of a G,P,, Arithmetic and Geometric series infinite G,P, and its sum, geometric mean (G,M,), relation between A,M, and G,M, Formula for some special sum |

There are three parts in Chemistry i.e., Physical Chemistry, Inorganic Chemistry and Organic Chemistry. Generally 30% of the total questions asked in JEE Main are from Physical Chemistry, 25% are from Inorganic Chemistry and rest 45% are from Organic Chemistry.

**JEE Main Solved Chemistry Practice Paper 2017 - 2018 Set - IV**

The important chapters of Chemistry are given below:

S.No. |
Topic |
Important Subtopics |

1 |
Physical Chemistry |
Chemical Equilibrium, Atomic Structure, Chemical Kinetics, Electrochemistry, Gaseous State, Ionic Equilibrium, Mole Concept, Nuclear Chemistry, Redox reactions, Solid State, Solution, Thermodynamics |

2 |
Inorganic Chemistry |
Chemical Bonding, Coordination Compounds, D-Block and F-Block Elements, Metallurgy, P-Block Elements, Periodic Properties, Qualitative Analysis, S-Block Elements, Hydrogen and its Compounds |

3 |
Organic Chemistry |
Alcohol and Ether, Biomolecules and Polymers, Carbonyl Compounds, Carboxylic Acid and its Derivatives, Classification and Nomenclature, General Organic Chemistry, Haloalkanes, Haloarenes and Phenols, Hydrocarbons, Isomerism, Nitrogen Compound and Aliphatic Amines, Practical and Environmental Chemistry, Alkyl Hallide, Aromatic Compounds, Carbonyl Compounds, Grignard Reagent, Ozonolysis |

The questions asked from Physics are generally conceptual. To score good marks in this subject student should focus on concepts. Also they should practice numerical problems based on the concepts.

The important chapters of Physics are given below:

S.No. |
Topics |
Important Subtopics |

1. |
Electrodynamics |
Electrostatics, Current Electricity, Magnetic Effects of Current and Magnetism, Electromagnetic Induction and Alternating Currents, Electromagnetic Waves |

2 |
Mechanics |
Kinematics, Laws of Motion, Work, Energy & Power, Rotational Motion, Gravitation, Properties of solids and liquids |

3. |
Modern Physics |
Dual Nature of Matter and Radiation, Atoms and Nuclei |

4. |
Heat & Thermodynamics |
Thermodynamics, Kinetic Theory of Gases |

5. |
Optics |
Ray Optics, Wave Optics, Optical Instruments |

6. |
Others |
Physics and Measurement, Electronic Devices, Communication Systems |