jee_main_2025_04_april_morning - Organic Chemistry - Some Basic Principles and Techniques Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #43 Resonance Effect and Dipole Moment
Given below are two statements. Statement I: The dipole moment of 4CH₃- 3CH= 2CH- 1CH=O is greater than CH₃-CH₂-CH₂-CH=O. Statement II: C₁-C₂ bond length of CH₃-CH=CH-CH=O is greater than C₁-C₂ bond length of CH₃-CH₂-CH₂-CH=O. In the light of the above statements, choose the correct answer from the options given below:
Start Practice →
QUESTION #46 Quantitative Analysis
In Dumas' method for estimation of nitrogen, 1~g of an organic compound gave 150~mL of nitrogen collected at 300~K temperature and 900~mmHg pressure. The percentage composition of nitrogen in the compound is _______ % (nearest integer). (Aqueous tension at 300~K = 15~mmHg)
Start Practice →
Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

Select Your Target Exam

Choose an exam track below to find formulas per chapter and patterns.

Syncing Exam Intelligence

Mapping formulas and patterns across all tracks…

PATH A — FULL LENGTH PRACTICE

Full Mock Test Hub

Simulate real NTA exam conditions with fully tracked mocks. Time yourself against past papers.

Now Live Open
PATH B — TARGETED PRACTICE

Topic-wise Practice Hub

Practice past-year questions one chapter at a time. Pick an exam → subject → chapter and get every PYQ for that topic — pulled together from all past papers — with the chapter's key formulas alongside.

Loading Questions... Browse Topics

Exam Analysis Tools

Chapter weightage trends and topic-wise practice — all mapped from past shift papers.

Year-wise PYQ

Chapter Weightage & Trends

See high-yield chapters, year-wise counts and the frequency-based chance each topic repeats next exam.

Weightage Board Open
Targeted PYQs

Topic-wise Practice Hub

Every past-year question for a chapter pulled from all papers, with its key formulas alongside.

One chapter at a time Open
Latest from the Blog
View all →

Loading articles...