Class 9 MCQ Questions for Chapter 3 Atoms and Molecules with Answers

We have compiled the MCQ Questions for Class 9 Science Chapter 3 Atoms and Molecules with Answers Pdf free download covering the entire syllabus for CBSE Class 9 Science. Practice MCQ Questions for Class 9 Science with Answers on a daily basis and score well in exams. Refer to the Atoms and Molecules Class 9 MCQs Quiz Questions with Answers here along with a detailed explanation.

Download Books for Boards

Join our Telegram Channel, there you will get various e-books for CBSE 2024 Boards exams for Class 9th, 10th, 11th, and 12th.

Download Books for Boards
Join Now
We earn a commission if you make a purchase, at no additional cost to you.

MCQ Questions for Class 9 Science Chapter 3 Atoms and Molecules with Answers

MCQ Questions for Class 9 Science Chapter 3 Atoms and Molecules with Answers

Please enter your email:

1. The molecule having an atomicity of 4 is:

 
 
 
 

2. The molecule having an atomicity of 4 is:

 
 
 
 

3. How many times an atom of sulphur is heavier than an atom of carbon?

 
 
 
 

4. The chemical symbol for sodium is

 
 
 
 

5. The chemical symbol for nitrogen gas is

 
 
 
 

6. Which of the following has maximum number of atoms?

 
 
 
 

7. The molecular formula of potassium nitrate is ________.

 
 
 
 

8. Which has maximum number of molecules?

 
 
 
 

9. Percentage of calcium in calcium carbonate is

 
 
 
 

10. What is the formula mass unit of ZnO?

 
 
 
 

11. Which of the following correctly represents 360 g of water?
(i) 2 moles of H2O
(ii) 20 moles of water
(iii) 6.022 × 1023 molecules of water
(iv) 1.2044 × 1025 molecules of water

 
 
 
 

12. Which of the following statements is not true about an atom?

 
 
 
 

13. Which of the following would weigh the highest?

 
 
 
 

14. How many atoms of oxygen are present in 300 grams of CaCO3?

 
 
 
 

15. The molecular formula of potassium nitrate is ________.

 
 
 
 

16. 1 u or 1 amu means

 
 
 
 

17. The atomic mass of sodium is 23. The number of moles in 46g of sodium is ________.

 
 
 
 

18. Which of the following represents a correct chemical formula?

 
 
 
 

19. 3.42 g of sucrose are dissolved in 18 g of water in a beaker. The number of oxygen atoms in the solution are

 
 
 
 

20. A change in the physical state can be brought about

 
 
 
 

Hope the information shed above regarding MCQ Questions for Class 9 Science Chapter 3 Atoms and Molecules with Answers Pdf free download has been useful to an extent. If you have any other queries of CBSE Class 9 Science Atoms and Molecules MCQs Multiple Choice Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible.

Tags: ,

Leave a Reply