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Class 9 Science Solutions English Medium
Download latest NCERT Solutions for Class 9 based on CBSE 2026-27 syllabus. Get chapter-wise detailed explanations, step-by-step answers, important questions and exam-ready study material in Hindi and English medium.
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Class 9 Science Solutions English Medium
NCERT Solutions for Class 9 are specially prepared according to the latest CBSE syllabus (2026-27) to help students understand every concept clearly. These solutions provide step-by-step explanations, accurate answers, and exam-oriented guidance for all chapters. Class 9 students can improve their problem-solving skills, strengthen conceptual understanding, and prepare confidently for school as well as board examinations. All questions are solved in a simple and easy-to-understand language for both Hindi and English medium learners.
Class 9 Science Solutions English Medium
NCERT Solutions Class 9 Science English Medium
4. Structure of The Atom
Topic: Non-atomic particles
Chapter 4: The Structure of Atom
Atom: The smallest tiny particles of matter is called atom.
There are three subatomic particles.
(i) Protron
(ii) Neutron
(iii) Electron
The two particles of these particles are charged.
(i) Protron: It is positively charged particle which is situated inside the nucleus od an atom. It shows all the chemical properties of an atom. Increasing or decreasing the number of protons of an atom caused changing in chemical properties.
- Protons are represented by p+ .
- The Mass of a proton is about 2000 times larger than electrons.
- The mass of a proton is taken 1 unit and it's charge is taken +1.
- It cann't be peeled off easily from nucleus as it located inside the nucleus. if we try to peel off nucleus can break.
The discovery of Proton was made by E. Goldstein.
(ii) Electrons: These are negatively charged (-) particles which revolve around the nucleus in well-defined orbits.
- These are represented by e- .
- The mass of an electron is considered to be negligible and its charge is minus one.
- Electrons can be easily peeled off.
The discovery of Electrons was made by J. J. Tomson.
(iii) Neutron: Nutrons are elecrically no charge non-atomic particles which are present in nuceus of an atom. They have no any charge.
The discovery of nutrons :
In 1932, J. Chadwick discovered another subatomic particle which had no charge and a mass nearly equal to that of a proton. It was eventually named as neutron.
- Neutrons are present in the nucleus of all atoms, except hydrogen.
- In general, a neutron is represented as ‘n’.
- The mass of an atom is therefore given by the sum of the masses of protons and neutrons present in the nucleus.
Neutral Atom: Generally, all atoms are electrically neutral, because the number of positively charged particles protons are equal to negatively charged particles electrons in any atom. This is the cause to be an atom neutral and net charges on it is zero.
Example : Oxygen has 8 positively charge particles protons and 8 negatively charged particles electrons.
- J. J. Tomson is the first scientist who present the model of atom.
Canal Rays : Canal rays are stream of positively charged particles emitted from anode of immersion tube, when electric current is flown through gas at very low pressure.
NCERT Solutions Class 9 Hindi and English Medium – Complete Study Material
NCERT Solutions Class 9 students ke liye specially CBSE latest syllabus (2026-27) ke according prepare kiye gaye hain. Yeh solutions Hindi aur English medium dono ke liye available hain, jisse har student apni language preference ke hisaab se padh sakta hai. Har chapter ke sabhi prashnon ke step-by-step answers diye gaye hain jo concept clarity aur exam preparation me madad karte hain.
Chapter-Wise Detailed Explanations
Class 9 ke liye diye gaye Chapter Wise NCERT Solutions me har question ka detailed aur easy explanation diya gaya hai. Chahe aap CBSE Board Exam Preparation kar rahe ho ya school test ke liye revise kar rahe ho, yeh solutions aapko complete understanding denge. Har answer simple language me likha gaya hai jisse students concepts ko easily grasp kar saken.
Hindi and English Medium Support
Students Hindi aur English medium dono me NCERT Book Solutions Class 9 access kar sakte hain. Yeh dual language support un students ke liye helpful hai jo apni regional language me better samajhna chahte hain. Sabhi answers CBSE Latest Syllabus 2026-27 ke anusaar update kiye gaye hain.
Important Features of NCERT Solutions
- Class 9 NCERT Solutions PDF
- CBSE Class 9 Study Material
- NCERT Book Questions and Answers
- Exam Oriented Important Questions
- Step-by-Step Detailed Solutions
- Concept Clarity and Revision Notes
Why Students Should Use NCERT Solutions?
Aaj ke competitive environment me sirf textbook padhna kaafi nahi hota. NCERT Solutions for Class 9 students ko practice aur conceptual understanding dono provide karte hain. Yeh solutions unhe exam pattern samajhne, frequently asked questions practice karne aur high score achieve karne me madad karte hain. Regular practice se students apne weak topics ko improve kar sakte hain.
Best Resource for Exam Preparation
Agar aap Class 9 CBSE Preparation ke liye ek trusted aur reliable source dhundh rahe hain, to yeh NCERT Solutions perfect choice hain. Yeh study material school exams, unit tests, half-yearly aur annual exams ke liye equally useful hai. Har chapter ke answers accurate, verified aur student-friendly format me diye gaye hain.
Isliye agar aap NCERT Solutions Class 9 Hindi and English Medium search kar rahe hain, to yahan aapko complete chapter-wise solutions milenge jo aapki academic journey ko strong aur confident banayenge.