Class 9 Science 3. Atoms and Molecules Unit Test Papers
Unit test papers play a crucial role in helping students evaluate their understanding of different subjects and chapters. These tests are designed to check conceptual clarity and improve problem-solving skills before the final examinations. By practicing unit test papers regularly, students can identify their weak areas and work on them effectively.
On this page, you will find a collection of unit test papers for various classes and subjects, including important questions, sample papers, and practice tests. These papers are prepared according to the latest exam patterns, making them highly useful for school exams as well as competitive preparation.
How unit test paper helps to gain score?
Regular practice with unit test papers not only boosts confidence but also improves time management and accuracy. Students can use these resources to revise key concepts, enhance their performance, and achieve better results in their exams.
Benefits of Practicing Unit Test Papers
Practicing unit test papers regularly helps students strengthen their understanding of important topics and improve their exam performance. It allows them to get familiar with the question pattern, marking scheme, and time management. By solving these papers, students can analyze their mistakes and work on improving accuracy and speed.
Class 9 Science 3. Atoms and Molecules Unit Test Papers
Unit Test Class
Science-9
3. Atoms and Molecules
Unit test - I
ATP EDUCATION
Unit-Test I
(Science-IX ) CH – 3,4
Timing: 1 hour M.M : 20
Instructions:
(i) All questions are compulsory.
(ii) Questions 1 to 4 carry 1 mark.
(iii) Questions 5 to 6 carry 2 marks.
(iii) Questions 7 to 10 carry 3 marks.
SECTION –A
Q1. Name two metals which atomicity is mono atomic.
दो धातुओं के नाम बताइए जिनका परमाणुकता एक परमाणुक होता है |
Q2. Calculate the formula unit masses of ZnO, Na2O, K2CO3, given atomic
masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.
ZnO, Na2O, K2CO3, का ईकाई द्रव्यमान सूत्र लिखिए जब Zn = 65 u,
Na = 23 u, K = 39 u, C = 12 u, और O = 16 u का परमाणु द्रव्यमान दिया
गया है |
Q3. Name two Indian philosophers who studied about the particle of matter.
दो भारतीय दार्शनिकों का नाम बताइए जो पदार्थ के कणों के विषय में अध्यन किया |
Q4. Write the definition of two important laws of chemical combination.
रासायनिक संयोजन के दो महत्त्वपूर्ण नियमों का परिभाषा लिखिए |
SECTION –B
Q6. Which part of an atom was discovered by Rutherford
alpha – particles scattering experiment? Write the limitation of
Rutherford atomic model.
रदर फोर्ड के अल्फा-कण प्रकीर्ण प्रयोग से परमाणु के किस भाग का खोज हुआ ?
रदरफोर्ड के परमाणु मॉडल की सीमाएँ लिखिए |
SECTION –C
Q7. Give the answer of following.
(i) What is an ion?
(ii) Give an example of polyatomic ion.
(iii) Write the symbols of (a) Sodium ion (b) oxide ion.
निम्न प्रश्नों का उत्तर दीजिए |
(i) आयन क्या है ?
(ii) बहुपरमाणुक आयन का एक उदाहरण दीजिए |
(iii) (a) सोडियम आयन (b) ऑक्साइड आयन का प्रतिक चिन्ह लिखिए |
Q8. Write the Dalton’s atomic theory.
डाल्टन का परमाणु सिद्धांत लिखिए |
Q9. Write two differences between Isotopes and Isobars. Write three
applications of Isotopes.
समस्थानिक एवं समभारिक में दो अंतर लिखिए | समस्थानिकों के तीन
अनुप्रयोग लिखिए |
Q10. What is mole? Find the numbers of mole in 16 g of oxygen gas.
Write the numbers of atom in one mole of atom.
मोल क्या है ? 16 g ऑक्सीजन गैस में मोलों की संख्या ज्ञात कीजिए | किसी
तत्व के एक मोल में परमाणुओं की संख्या ज्ञात कीजिए |
Class 9 Science Chapters Unit Test Papers
Unit Test Papers
Class 9
How to Use Unit Test Papers Effectively
To get the best results, students should attempt unit test papers in a timed environment and treat them like real exams. After completing each test, it is important to review the answers carefully and understand the mistakes. Consistent practice and proper analysis will help students build confidence and achieve better results in their academic journey.
✨ You May Also Like This!
View Related Article
Learn Writing SkillsHere You will learn how to write a paragraphs, essays, letters, notice, reports, article and so many writing skills
Frequently Asked Questions (FAQs)
What are unit test papers?
Unit test papers are short tests designed to check a student’s understanding of specific chapters or topics before final exams.
Why are unit test papers important?
They help students practice important questions, improve performance, and prepare effectively for school exams.
Where can I download unit test papers?
You can download unit test papers from educational websites that provide class-wise and subject-wise practice papers.
Do unit test papers include answers?
Yes, many unit test papers come with answers or solutions to help students understand the correct approach.
Are unit test papers useful for board exam preparation?
Yes, they are very useful as they cover important concepts and frequently asked questions.