NCERT

Mostly yes the entire syllabus of AIIMS paramedical entrance exam is based on NCERT 11th and 12th, though there might be some chapters which might not be included in the syllabus but nothing more than NCERT syllabus. 

Chapter 2 is Structure of Atom, aka the OG Science breakdown of how literally everything exists. You'll learn stuff like Bohr's model, orbitals, quantum numbers — all the nerdy magic that makes atoms behave. Sounds heavy, but once you get the hang of it, it lowkey feels like unlocking the Matrix. Trust the process, and maybe don't sleep through this one.

NCERT solutions for class 11 Chemistry chapter 9 hydrocarbon are crucial for understanding the fundamental principle of organic chemistry including the classification nomenclature and reaction of alkanes and alkyne and their vital role in daily life as fuse and in the manufacturing of polymer and other products

This INC-compliant curriculum integrates theory, lab work, and clinical practicum, progressing from foundational sciences and basic nursing to advanced specialties, leadership, community health, and research. Each year builds structured competencies in physiological, psychological, pharmacological, social, ethical, technological, and managerial domains .

Here are some of the best NCERT Class 11 Chemistry Chapter 11 exercise solutions you can download and study .

1. LearnCBSE

Provides detailed, step by step solutions covering every question—from Intext to Exercise problems.

Available in English, per the latest NCERT syllabus for 2023–24 & 2025- 2026

A frame of reference is a system that helps an observer measure the position, speed, and time of an object. It is important because motion is always relative to something else. Without a frame of reference, we cannot describe how an object is moving or if it is moving at all. It provides a fixed viewpoint to observe and understand motion accurately.

To represent in detail NCERT ideas of organic chemistry basics (Class 11, Chapter Organic Chemistry - some basic principles and methodologies), you can use a variety of superb online resources. Sites such as  Khan Academy provide entire notes, video recorded lectures and solved examples which deconstructs hard topics such as nomenclature, isomerism, reaction mechanisms and the effect of electron displacement. Physics Wallah and Aakash also have detailed revision videos as part of the NCERT syllabus which goes into details about these base concepts. Going through the platforms will give you deeper insights than the textbook.

The solution to the Class 11 chemistry chapter 9 exercise can be found on several education sites and that may be on 9 septuplets or 9 Octuplets (either hydrogen or hydrocarbons) depending upon the edition of NCERT syllabus you are following. Some of the best platforms by the likes of Physics Wallah, and Tiwari Academy have complete NCERT solutions that can be found in PDF format or even as a step by step instructions. Video solutions are also provided in the YouTube channels of CBSE Class 11 Chemistry.

Yes, NCERT Solutions are available for free. Find them easily online without paying anything. 

These solutions are for all classes and subjects. 

Many websites, apps, and even the NCERT official platform provide free access. You don't need to register or buy any book to read or download them.

Important topics in NCERT class 12 Physics chapter 13 nuclear include atomic structure, nuclear binding energy, radioactivity, Nuclear Fission, and nuclear fusion. These concepts are fundamental to understanding the behaviour and properties of atomic and nuclear matter and are crucial for both the board exam and competitive entrance test.