CBSE NCERT Solutions for Class 9 Science Chapter 3

Free Download CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Page 32 or Page 33 or Page 35 or Page 39 or Page 40 or Page 42 or Exercises in English Medium or पेज 36 के उत्तर or पेज 40 के उत्तर or पेज 44 के उत्तर or पेज 46 के उत्तर or पेज 48 के उत्तर or अभ्यास के प्रश्न उत्तर  to study online or in PDF form to use offline. Download NCERT Solutions for other subjects are also in same format.


CBSE NCERT Solutions for Class 9 Science Chapter 3

CBSE NCERT Solutions for Class 9 Science Chapter 3

English Medium Downloads
Hindi Medium Downloads
Previous Years Questions




Page 32 Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions of page 32 are given below. For other questions visit Page 33 or Page 35 or Page 39 or Page 40 or Page 42 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules page 32

Page 33 Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions of page 33 are given below. For other questions visit Page 32 or Page 35 or Page 39 or Page 40 or Page 42 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 33



Page 35 Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions of page 35 are given below. For other questions visit Page 32 or Page 33 or Page 39 or Page 40 or Page 42 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 35

Page 39 Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions of page 39 are given below. For other questions visit Page 32 or Page 33 or Page 35 or Page 40 or Page 42 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 39



CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 39 in english medium

Page 40 Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions of page 40 are given below. For other questions visit Page 32 or Page 33 or Page 35 or Page 39 or Page 42 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 40



CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 42

Page 42 Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions of page 42 are given below. For other questions visit Page 32 or Page 33 or Page 35 or Page 39 or Page 40 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

CBSE NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules intext questions page 42

Exercises Questions Answers

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Chapter end Exercises questions are given below. For other questions visit Page 32 or Page 33 or Page 35 or Page 39 or Page 40 or Page 42 or Exercises in English or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Exercises Question answers




NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Exercises Question answers in english medium
NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Exercises Question answers in pdf form



NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Exercises Question answers free download
NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Exercises Question answers for up board
NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules in pdf

पेज 36 के उत्तर




NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions पेज 36 के उत्तर नीचे दिए गए हैं. For other questions visit पेज 40 के उत्तर or पेज 44 के उत्तर or पेज 46 के उत्तर or पेज 48 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science chapter 3 page 36 answers
9 Science chapter 3 page 36 answers in hindi

पेज 40 के उत्तर





NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions पेज 40 के उत्तर नीचे दिए गए हैं. For other questions visit पेज 36 के उत्तर or पेज 44 के उत्तर or पेज 46 के उत्तर or पेज 48 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science chapter 3 page 40 answers

पेज 44 के उत्तर




NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions पेज 44 के उत्तर नीचे दिए गए हैं. For other questions visit पेज 36 के उत्तर or पेज 40 के उत्तर or पेज 46 के उत्तर or पेज 48 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science chapter 3 page 44 answers
9 Science chapter 3 page 44 answers in hindi

पेज 46 के उत्तर




NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions पेज 46 के उत्तर नीचे दिए गए हैं. For other questions visit पेज 36 के उत्तर or पेज 40 के उत्तर or पेज 44 के उत्तर or पेज 48 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science chapter 3 page 46 answers

पेज 48 के उत्तर





NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules Intext questions पेज 48 के उत्तर नीचे दिए गए हैं. For other questions visit पेज 36 के उत्तर or पेज 40 के उत्तर or पेज 44 के उत्तर or पेज 46 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science chapter 3 page 48 answers

अभ्यास के प्रश्न उत्तर




NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules अभ्यास के प्रश्न उत्तर नीचे दिए गए हैं. For other questions visit पेज 36 के उत्तर or पेज 40 के उत्तर or पेज 44 के उत्तर or पेज 46 के उत्तर or पेज 48 के उत्तर  or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science chapter 3 Exercises




9 Science chapter 3 Exercises all question answers in pdf
9 Science chapter 3 Exercises solutions in hindi medium
9 Science chapter 3 Exercises free download

Go back to Class 9 Science main page or move to Top of page



Class 9 Science – Atoms and Molecules

Extra Questions with Answers for Exams

Question 1
In what respect does Dalton’s Atomic theory hold good even today?
Answer 1:
atom has been found to be made up of sub-atomic particles like electrons, protons and neutrons. But it is still the smallest particle of matter which can take can take part in chemical combination.

Question 2:
Why is it necessary to balance a chemical equation?
Answer 2:
A chemical equation has to be balanced in order to satisfy the law of conservation of mass. According to the law, there is no change in mass when the reaction changes into the production. Therefore, the chemical equation has to be balanced.

Question 3:
What is basic different between atoms and molecules?
Answer 3:
Atoms except those of noble or inert gas elements cannot exist of their own. However, all molecules can have independent existence.

Question 4:
Why is a cation so named?
Answer 4:
When electric current is passed through the solution of a salt like sodium chloride (NaCl), the positive ion (Na+) migrates towards cathode (negative electrode). It is therefore, called cation. Remember this:
(i) Positive ion migrating towards cathode on passing electric current is known as cation.
(ii) Negative ion migrating towards anode on passing electric current is known as anion.

More Questions for Practice

Question 1:
The atomic mass of an element is in fraction. What does it means?
Answer 1:
If the atomic mass of an element is in fraction, this means that it is existed in the form of isotopes. The atomic mass is the average atomic mass and it is generally fractional.

Question 2:
Why are chemical reaction according to law of conservation of mass?
Answer 2:
In all chemical reactions, there is only exchange of reactants taking place when products are formed. Since there is no loss or gain of mass, the chemical reactions are according to law of conservation of mass.

Question 3:
Give one limitation of law of constant composition.
Answer 3:
The law of constant composition does not hold when different isotopes of an element take part in the formation of a particular compound. For example,
In carbon dioxide (CO2)
By using C-12 isotopes, the ratio of C : O is 12 : 32.
By using C-14 isotopes, the ratio of C : O is 14 : 32.
This means that the two ratios are not the same.

Question 4:
Out of atoms and molecules which can exist independently?
Answer 4:
Molecules can exist independently. However, the atoms of noble gases (He, Ne, Ar, Kr, Xe) can also exist independently.