 # Revision Notes for JEE Main

NTA conducts the prestigious JEE Main Exam every year. Candidates who will be clearing the JEE Mains and JEE Advanced examination will be eligible for admission into the top engineering colleges across the country. Cracking JEE Main is not an easy task. The IIT JEE syllabus is vast and the concepts included are very much practical based and conceptual. To help students grasp concepts clearly and study productively we have provided well-structured JEE Study materials. The revision notes are prepared by the subject-matter experts and are recommended for both, JEE Main and JEE Advanced. Revision notes include all the essential tips, be it theory or practical that would help aspirants in attempting questions with ease.

## JEE Main Revision Notes with Solutions

The JEE Main revision notes have an indispensable compilation of several important problems to inculcate critical thinking and problem-solving abilities in aspirants. The students are suggested to download PDFs of revision notes and prepare them on a regular basis to have a clear conceptual understanding. These revision notes summarise all the key concepts provided in Physics, Chemistry and Maths. BYJU’S offers concise, yet informative revision notes that the students can use for their exam preparation.

## Revise JEE Main Important Questions

### Maths:

Question 1: Let the tangents drawn from the origin to the circle, x2 + y2 − 8x − 4y + 16 = 0 touch it at the points A and B. The (AB)2 is equal to. Solution.

Question 2: Let A = [aij] and B = [bij] be two 3 × 3 real matrices such that bij = (3)(i+j−2) aji, where i, j = 1, 2, 3. If the determinant of B is 81, then the determinant of A is : Solution.

Question 3: A tangent is drawn to the parabola y2 = 6x which is perpendicular to the line 2x + y =1. Which of the following points does NOT lie on it? Solution.

Question 4: The distance of the point (1, 1, 9) from the point of intersection of the line (x – 3)/1 = (y – 4)/2 = (z – 5)/2 and the plane x + y + z = 17 is: Solution.

### Chemistry

Question 1: In a molecule of pyrophosphoric acid, the number of P-OH, P = O and P – O – P bonds / moiety(ies) respectively are: Solution.

Question 2: How do you Calculate Enthalpy of Hydrogenation Solution.

Question 3: Aqua regia is used for dissolving noble metals (Au, Pt, etc.). The gas evolved in this process is Solution.

Question 4: The volume strength of 8.9 M H2O2 solution calculated at 273 K and 1 atm is ______. (R = 0.0821 L atm K-1 mol-1) (rounded off to the nearest integer) Solution.

To Practice more questions, Visit: JEE Main Chemistry Chapter Wise Previous Year Questions

### Physics

Question 1: In a given direction, the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of 256: 81. The ratio of the frequency of the first beam to the frequency of the second beam is Solution.

Question 2: A Young’s double slit set up for interference is shifted from air to within water, then the fringe width.Solution

Question 3: In Huygen’s wave theory, the locus of all points in the same state of vibration is called. Solution.

Question 4: For sustained interference fringes in double slit experiment, essential conditions Solution.

To Practice more questions, Visit: JEE Main Physics Chapter Wise Previous Year Questions

## JEE Main Revision Notes Benefits

• Helpful for last minute preparation.
• Easy to memorize
• Cover almost all important facts and formulae.
• Enables the student to reinforce their learning
• Helps you to recollect all the things which you have learnt previously.

Stay tuned with BYJU’S for JEE Main study materials, important questions, sample papers, previous years solved question papers and more.