CBSE Class 9 Science Previous Year Question Paper
This is a CBSE Class 9 Science Previous Year Question Paper designed for exam practice. The paper is divided into sections and includes questions covering various topics within the science curriculum. It specifies a total time of 3 to 3½ Hours and carries a maximum mark of 90. The questions range in difficulty and marks, with some requiring short answers and others more detailed explanations or calculations. For instance, there are questions on the S.I. Unit of Pressure, commercial unit of electrical energy, nitrogen-fixing bacteria, atomic structure, relative density, plant classification, wave types, carbon dioxide increase, atomic properties, biological terms, phylum classification, monocots vs. dicots, laws of chemical combination, molecular calculations, polyatomic ions, and conditions for work. Solving this board question paper is crucial for students to understand the exam pattern, identify weak areas, and improve their performance.
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Quick info
| Board | CBSE |
|---|---|
| Class | 9 |
| Subject | English |
| Language | English |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper is divided into sections and has a total duration of 3 to 3½ Hours with a maximum mark of 90.
Topics covered
Paper topics
- S.I. Unit of Pressure
- Commercial unit of electrical energy
- Nitrogen fixing bacteria
- Atomic structure
- Relative density
- Angiosperms vs. Gymnosperms
- Longitudinal vs. Transverse waves
- Carbon dioxide increase
- Atomic number, mass number, valency
- Sanyam and Svasthya
- Phylum classification (Pila, Unio, Sponges)
- Monocots vs. Dicots
- Law of Constant Proportion
- Chemical combination calculations
- Molecules in CO2
- Polyatomic ions
- Conditions for work
Important topics
- Atomic structure
- Laws of chemical combination
- Molecular calculations
- Phylum classification
PDF preview
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Question paper text
CLASS –IX SCIENCE
Time: 3 to 3½ Hours
M.M.: 90
Total No. of Pages :-
General Instructions:
SECTION -A
Q.1. Name the S.I. Unit of Pressure. 1
Q.2. Define the commercial unit of electrical energy. Q.3. In which type of plants are Nitrogen fixing bacteria present. 1
Q.4. a). How did Rutherford come to the conclusion that most of the space in an atom is empty? 2
b.) Why do isotopes of an element show similar chemical properties? 2
Q.5. Find the relative density of copper block of mass 216g having volume of 80cm<sup>3</sup> (Density of Water = 1g/cm<sup>3</sup>). 2
Q.6. How do angiosperm differ from gymnosperms? Write one example each? 2
Q.7. List any two differences between longitudinal waves and transverse waves. 2
Q.8. List any three human activities which would lead to an increase in the carbon dioxide content of air. 3
Q.9. What information do you get from the figure given below about the atomic number, at mass number and valency of atoms X, Y and Z. Give your answer in tabular form. 3
15 P 6 N Q.10. Define Sanyam and Svasthya? How are the two related? 3
Q.11. Write the given statement in your answer books after filling in the blanks? 3
- Pila and Unio have an external shell and belong to the phylum_ .
- Free living marine animals with water driven tube system are in the phylum .
- To which phylum do sponges belong
Q.12. Differentiate between monocots and dicots. Give two differences and one example of each? 3
Q.13. (a) State the law of Constant Proportion.
- In a compound Carbon and Oxygen react in a ratio 3: 8 by mass to form carbon dioxide. What mass of oxygen is required 3
Q.14. (a) Calculate the number of molecules present in 4.4g of
<math>CO_2</math>. [At Mass: C=12, O=16 u, <math>N_A = 6.02 \times 10^{23} \text{ mol} ^{-1}</math>] 3 (b)
Q.15. (a) What are the conditions for work to be done?
Frequently asked questions
What is this document?
This document is a CBSE Class 9 Science Previous Year Question Paper, useful for board exam preparation.
What is the duration and maximum marks for this paper?
The paper is designed for 3 to 3½ Hours and has a maximum mark of 90.
What types of questions are included?
The paper includes a variety of questions, from short answers and definitions to calculations and detailed explanations across different science topics.
How does solving previous year papers help?
Solving previous year question papers helps students understand the exam pattern, identify important topics, and improve their time management and scoring potential.
What subjects are covered in this paper?
This paper specifically covers topics from the CBSE Class 9 Science syllabus.
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