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Study this fun chapter from NCERT Book Class 9 Science Solutions and Answers to learn new things in Class 9 Science. Need help with answers? Check the NCERT Solutions for Class 9 Science to solve every question at the end of the chapter.
NCERT Class 9 Science Solutions And Answers PDF
Chapter 1
1. (c) 2. (c) 3. (c) 4. (d)
5. (c) 6. (a) 7. (b) 8. (c)
9. (a) 10. (c)
11. It’s freezing point will be below 0°C due to the presence of a non-volatile impurity in it.
12. Since ice and water are in equilibrium, the temperature would be zero. When we heat the mixture, energy supplied is utilized in melting the ice and the temperature does not change till all the ice melts because of latent heat of fusion. On further heating, the temperature of the water would increase. Therefore the correct option is (d).
13. (a) cooling
(b) stronger
(c) liquid, gaseous
(d) sublimation, liquid
(e) evaporation
14. (a) — (iii)
(b) — (iv)
(c) — (v)
(d) — (ii)
(e) — (i)
15. (a) — (iv)
(b) — (iii)
(c) — (v)
(d) — (ii)
(e) — (i)
16. Yes, this is true. In both the phenomena, there is movement of particles from region of higher concentration to that of lower concentration. However, in the case of osmosis the movement of solvent is through a semi permeable membrane which is permeable only to water molecules.
Please refer to attached file for NCERT Class 9 Science Solutions and Answers
Free study material for Science
Solutions And Answers Digital Textbook & Resources for Class 9 Science
Class 9 Science Solutions And Answers Official E-Book
Download the official NCERT Textbook for Class 9 Science Solutions And Answers, updated for the latest academic session. These e-books are the main textbook used by major education boards across India. All teachers and subject experts recommend the Solutions And Answers e-textbook because exam papers for Class 9 are strictly based on the syllabus specified in these books. You can download the complete chapter in PDF format from here.
Complete Chapter E-Books for Class 9 Science
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FAQs
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Yes, our collection of Class 9 Science NCERT books follow the 2026 rationalization guidelines. All deleted chapters have been removed and has latest content for you to study.
Downloading chapter-wise PDFs for Class 9 Science allows for faster access, saves storage space, and makes it easier to focus in 2026 on specific topics during revision.
NCERT books are the main source for NCERT exams. By reading NCERT Book Class 9 Science Solutions and Answers line-by-line and practicing its questions, students build strong understanding to get full marks in Science.