Hii..

I'm listing those chapters from which question comes almost directly:

CHEMISTRY:

1. All Inorganic Chapters (of both class 11th and 12th). But you should have good command over each line of N.C.E.R.T. text.
2. Biomolecules
3. Polymers
4. Chemistry in Everyday Life
5. Environmental Chemistry

PHYSICS:

1. Units & Dimensions (Most of the time question comes directly).
2. Electromagnetic waves
3. Semiconductors
4. Communication System

Well…there are only 4 direct/theoretical chapters from Physics as almost all questions of the physics section are application based.

But if you can complete the above listed chapters completely, then you can easily score atleast 40 marks.

Best of Luck!!

For SC students to qualify in JEE Main approximate marks are around 40.Let us assume in worst case they are 100.Each question has 4 marks, so you need to know atleast 25 questions correctly.There are 3 major sections in exam which are Maths,Physics,Chemistry with each section having 90 questions.So first you choose chemistry in which questions may be direct.There are 3 main topics in chemistry which are Physical,Inorganic,Organic with each section holding approximately 30 questions.So if you prepare 1 section thoroughly you can get 30 questions which is more than required.Even if let us assume in worst case you got only 20 questions.Then select Mathematics and prepare tgopics like Quadratic Equations,Trigonometry,Matrices which are very easy and can give you around 4-5 questions.Mind answering only those questions that are perfect enough.Don't spoil your marks by answering all the questions.All the very best 

The first and foremost thing that you should do is that you should at least prepare your class 12th very effectively because it is a fresh part of the syllabus and quite scoring too so make the best of it.

1. Try to do the topics that you are known to but you haven’t revised yet first because that will build up your confidence and also you will get ensured that at least you have started the preparation in full swing.
2. Do topics like Chemistry in everyday life, biomolecules, mathematical reasoning etc. as they are very scoring and not time taking as well.
3. Try to complete as much part of the syllabus as you can and prefer to take important topics such as mechanics, physical chemistry, coordinate geometry etc, as there are generally a lot of questions asked from these topics and if you do them properly then you will be in the better side.
4. If you are in a really bad situation then I would strongly suggest to do chemistry properly because it is the only subject that requires minimum time and is most scoring.

All the very best and good luck.

Hi,

Few days are left for JEE Mains 2018. The following topics are important and has more weightage than others. The important chapters for each subjects are-

Physics

• Electrodynamics
• Mechanics
• Modern Physics
• Heat & Thermodynamics
• SHM & Waves
• Optics

Mathematics

• Differential Calculus
• Integral Calculus
• Coordination geometry
• Matrix and Determinants
• Probability
• Trignometry

Chemistry

Organic Chemistry

• Alkyl Hallide
• Alcohol and Ether
• Aromatic Compounds
• Biomolecules
• Carbohydrates
• Amino Acids and Polymers
• Carbonyl Compounds
• Environmental Chemistry

Physical Chemistry

• Atomic Structure and Nuclear Chemistry
• Ionic Equillibrium
• Mole Concept
• Thermodynamics and Thermochemistry
• Chemical Kinetics
• Solid state
• Surface Chemistry

Inorganics Chemistry

• Chemical Bonding
• Periodic Table and Periodicity in properties
• s-block 

Hope this helps. All the best!!