Class 11

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

Studying Physical Education in Class 11 and 12 gives you a solid foundation if you want to build a career in sports, fitness training, yoga instruction or even as a Physical Education teacher. You will already know the basics of body movements, nutrition, training methods and how to organize sports events so college courses feel easier and more interesting.

Physical Education Class 11 is an academic subject that focuses on physical fitness, sports, and overall well-being. It includes both theoretical knowledge and practical activities. The syllabus covers topics like physical fitness, sports psychology, training methods, and health education.

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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.