NCERT Solutions for Class 9 Science Chapter 12 Sound in Hindi

NCERT Solutions for Class 9 Science Chapter 12 Sound in Hindi PDF Download

Download the Class 9 Science NCERT Solutions in Hindi medium and English medium as well offered by the leading e-learning platform Vedantu. If you are a student of Class 9, you have reached the right platform. The NCERT Solutions for Class 9 Science in Hindi provided by us are designed in a simple, straightforward language, which are easy to memorise.


You will also be able to download the PDF file for NCERT Solutions for Class 9 Science in Hindi from our website at absolutely free of cost. You can download NCERT Solution for Class 9 Maths to help you to revise complete syllabus and score more marks in your examinations.


NCERT, which stands for The National Council of Educational Research and Training, is responsible for designing and publishing textbooks for all the classes and subjects. NCERT textbooks covered all the topics and are applicable to the Central Board of Secondary Education (CBSE) and various state boards.


We, at Vedantu, offer free NCERT Solutions in English medium and Hindi medium for all the classes as well. Created by subject matter experts, these NCERT Solutions in Hindi are very helpful to the students of all classes.

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NCERT Solutions for Class 9 Science Chapter 12 Sound in Hindi part-1

NCERT Solutions for Class 9 Science Chapter 12 Sound in Hindi

Chapter-wise NCERT Solutions are provided everywhere on the internet with an aim to help the students to gain a comprehensive understanding. Class 9 Science Chapter 12 solution Hindi mediums are created by our in-house experts keeping the understanding ability of all types of candidates in mind. NCERT textbooks and solutions are built to give a strong foundation to every concept. These NCERT Solutions for Class 9 Science Chapter 12 in Hindi ensure a smooth understanding of all the concepts including the advanced concepts covered in the textbook.


NCERT Solutions for Class 9 Science Chapter 12 in Hindi medium PDF download are easily available on our official website (vedantu.com). Upon visiting the website, you have to register on the website with your phone number and email address. Then you will be able to download all the study materials of your preference in a click. You can also download the Class 9 Science Sound solution Hindi medium from Vedantu app as well by following the similar procedures, but you have to download the app from Google play store before doing that.


NCERT Solutions in Hindi medium have been created keeping those students in mind who are studying in a Hindi medium school. These NCERT Solutions for Class 9 Science Sound in Hindi medium pdf download have innumerable benefits as these are created in simple and easy-to-understand language. The best feature of these solutions is a free download option. Students of Class 9 can download these solutions at any time as per their convenience for self-study purpose.


These solutions are nothing but a compilation of all the answers to the questions of the textbook exercises. The answers/ solutions are given in a stepwise format and very well researched by the subject matter experts who have relevant experience in this field. Relevant diagrams, graphs, illustrations are provided along with the answers wherever required. In nutshell, NCERT Solutions for Class 9 Science in Hindi come really handy in exam preparation and quick revision as well prior to the final examinations.

FAQs (Frequently Asked Questions)

1. List out the topics included in Chapter 12 of NCERT Solutions for Class 9 Science.

Class 9 Science Chapter 12 is about 'Sound'. It briefly explains everything one should know about sound, its characteristics, terms related to sound and more. You can find the following topics included in the NCERT Solutions of Class 9 Science Chapter 12.

  • Production and Propagation of sound.

  • Medium of Sound

  • Wave and its types

  • Characteristics of Sound

  • Audible Frequency

  • Reflection of Sound and its Laws

  • Applications of Reflection of Sound.

2. How many exercises are present in Chapter 12 of NCERT Solutions for Class 9 Science?

NCERT Solutions of Class 9 Science Chapter 12 has answers provided for all the 22 questions given at the end of the chapter. You can also find the answers to the questions of all the nine in-text exercises. These answers are written by the in-house subject matter experts of Vedantu. They are written simply and briefly, which makes them easy to understand and remember.

3. Is the NCERT Solutions for Class 9 Science the best study material for exams?

Yes. There are high chances that you can get questions from the NCERT Science Textbook in your exams. According to CBSE guidelines, the questions are expected to strictly follow the NCERT syllabus. So, before you jump onto any guidebook, make sure that you have prepared the NCERT solutions for Class 9 Science. Practising these solutions will strengthen your concepts and will make you ready to excel in exams. You can refer to the official website of Vedantu or the Vedantu app for the PDFs of NCERT Solutions at free of cost.

4. List sources of noise pollution in your surroundings.

When any noise crosses over 65dB it results in noise pollution. It is considered to be harmful to the ears to hear something beyond 65-70dB. We can find a lot of things that contribute to noise pollution. Following are some of the sources of noise pollution:

  • The honking of horns or traffic noise

  • Loud music through speakers

  • Drilling at construction sites

  • Air traffic noise

  • Industrial activities

  • Bursting of crackers

  • Electrical appliances 

  • Barking of dogs.

5. Explain in what way noise pollution is harmful to humans.

Noise pollution happens due to the presence of loud and unnecessary sound that crosses 65dB. Any noise that goes beyond 65-70dB is known to be quite harmful to humans. It can harm us in the following ways:

  • Physical- By damaging our hearing, headaches, and raising blood pressure. 

  • Behavioural- It affects our sleep which brings in many other behavioural disorders.

  • Psychological- It results in stress, anxiety and in extreme cases leads to depression.

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