Science is an important subject and consists primarily of a blend of the basics of Physics, Chemistry, and Biology. Forming the backbone of engineering entrance tests, high school exams and competitive Olympiads in general, having a strong foundation in the Sciences is what makes the hallmark for excellence in high school academics. If you want to understand the basic concepts of Science practically and require a refresher for your finals at the same time, then the NCERT CBSE Board Important Questions for Class 9 Science with solutions is what you need.

Get 100 percent accurate NCERT Solutions for Class 9 Science Chapter 12 (Sound) explained by expert Science teachers. We provide solutions for the questions given in Class 9 Science textbook as per CBSE Board guidelines from the latest NCERT book for Class 9 Science.

NCERT Grade 9 CBSE belongs to the Unit III Motion, Force and Work. This chapter describes the Production of Sound, Propagation of Sound. The topic propagation of sound further includes sound needs a medium to travel, sound waves are longitudinal waves, characteristics of a sound wave, speed of sound in different media. All these topics are explained with the help of practical activities, diagrams, out of the box information, and in between exercises. The solutions given for the problems in this chapter will help the students to become aware of the basic concept of production and propagation of sound and many more interesting things that we use and see in our day to day life related to them. 

In this chapter, students will get hold about the Reflection of Sound ECHO, reverberation, uses of multiple reflections of sound. All of these concepts have been taught with the help of activities to be done in the Physics laboratory, thus making the learning process more interactive. The solutions to the problems pertaining to the problems in between the chapters further help the students to understand their level of learning. 

Interesting topics such as Range of Hearing, Applications of Ultrasound will be learned in this chapter with the help of activities. Besides, activities wonderful phenomenon about SONAR  will further help the students to learn about the concept. 

In this chapter, Sound, students will also learn more about Structure of Human Ear. Students are advised to go through the solutions provided in these topics for conceptual learning and scoring well in the exams. The NCERT Solutions for class 9 Science provided herein are designed by our subject matter experts in a simple and precise manner.

This chapter is a part of Unit III Motion, Force and Work of NCERT Grade 9 Science CBSE. This Unit holds a weightage of 27 marks in the annual examination.