CBSE Class 9 OTBA Science Sample Question Paper

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Read and download the CBSE Class 9 OTBA Science Sample Question Paper, designed by expert teachers according to the latest 2025-26 curriculum and examination pattern issued by CBSE, NCERT, and KVS. These Class 9 Science sample papers include detailed step-by-step solutions, helping students to practice and evaluate their performance against the most recent marking schemes.

Solved Sample Paper for Class 9 Science PDF

Our Class 9 Science model papers are important for understanding the weightage of different chapters and the difficulty level of expected questions. By solving these guess papers Class 9 students can identify weak areas and improve time management. We also suggest referring to our Class 9 Science Question Papers of previous years to further strengthen your exam preparation.

Class 9 Science Sample Paper with Solutions

 

Answer the following 
 
1 Name the conditions of the atmosphere that provides excellent conditions to support and sustain life.
A The atmosphere comprising of mainly Nitrogen, Oxygen, Carbon dioxide and water vapour provides excellent conditions to support and sustain life.
 
2 What are pollutants?
A The undesired components which contaminate air are called pollutants.
 
3 Name the gas that is necessary for the survival of life on earth.
A Carbon dioxide is necessary for the survival of life on earth.
 
4 `Name the phenomenon that is essential to maintain and keep the earth’s atmosphere warm.
A Photosynthesis
 
5 What is the cause for the depletion of ozone layer?
A The use of refrigerators and air conditioners, fire extinguishers, aerosol sprays like deodorants etc. results in release of CFCs and N2O in the atmosphere which is responsible for depletion of ozone layer
 
6 Give the consequences of depletion of ozone layer
A UV radiations enter into the atmosphere causing damage to all kinds of life on earth.
 
7 What is NAMP?
A NAMP stands for National Air Quality Monitoring Programmer.
 
8 What is the significance of PM10?
A PM10 is the term used to describe tiny particles in the air, made up of a complex mixture of soot, organic and inorganic materials having particle size less than or equal to 10 microns diameter(10 microns is equal to one hundredth part of a millimeter)
 
9 What do PTI and IST stand for?
A Press Trust of India, and Indian Standard Time
 
10 What is the place of Air pollution in taking lives of people in India?
A Air pollution is the fifth largest killer in India taking 6.2 lakh lives per year.

 Answer the following 

1 Name the five most critically polluted regions in the country.
A Delhi, Ghaziabad, Gwalior, West Singbhum district in Jharkhand and Raipur are the five most critically polluted regions in the country.
 
2 How acid rain is is formed?
A The oxides of sulphur, carbon, and nitrogen released into the atmosphere from chimneys of Industries and exhaust of vehicles react with water of the rains and oxygen from air to form acids. Dissolved acids make the rain acidic in nature.
 
3 What is the affect of acid rains on the environment?
A Acid rains are very harmful for both, living and nonliving things. Acid rains damage crops, pollute soil and water, ruin the harvest, damage aquatic life and erode buildings.
 
4 Name the undesirable components which contaminate and cause air pollution
A The harmful Ozone in the lower atmosphere, Carbon monoxide, Nitrogen dioxide,Solid or liquid matter that is suspended in the air, Sulfur dioxide, Lead,Arsenic,asbestos, benzene and dioxin, Green House gasses Carbon dioxide methane and nitrous oxide are the components which cause air pollution.
 
5 What is the effect of carbon monoxide on the life on earth?
A • It makes the body parts hard to get the necessary oxygen
• More exposure makes people feel dizzy and tired
• High concentrations is fatal
People suffering from heart disease are hospitalized more often.
 
6 What is the importance of Earth Day? When is it celebrated
A To give awareness to the people towards keeping the planet Earth non polluted, Earth Day is celebrated on April 22 every year.
 
7 What is Global warming?
A Increase in the levels of CO2 due to excessive burning of fossil fuels and other carbon containing fuels which results in excessive heating of the earth’s surface is called Global Warming. 
 
8 What are the greenhouse gases present in the earth’s atmosphere in their order of abundance in the atmosphere
A Water vapour, Carbon dioxide, methane, nitrous oxide, ozone, chlorofluorocarbons. 
 
9 What made the Governments of different nations take up the problem of air pollution to a central stage? 
A Smog which surrounded the city of London in the year 1952 resulted in the loss of about 4000 human lives and many others suffering from serious breathing problems .This made Governments of different nations to take-up the problem of air pollution to a central stage. 
 
10 Visibility is very low during winters. Why?
A Smog is a mixture of smoke dust particles and fog. The smoke emitted from the exhaust of the vehicles settles over fog in winter and reduces the visibility 
 
11 What is the effect of Air toxics on the Human beings?
A Air toxics can impair lung function and neurodevelopment, or aggravate existing conditions, such as asthma. Infants who were born premature or growth-retarded may be particularly vulnerable to additional environmental affects.. 
 
12 From picture no. 5 name the diseases affecting children of 0 to 5 years.
A Diseases affecting children in the age from 0 to 5 years are High respiratory rate, Respiratory death cough bronchitis wheeze and ear infections 
 
13 From picture no 5 name the diseases affecting children of 6 to 12 years.
A Chronic cough and bronchitis, Reduced lung function, wheezing and asthma attacks,.

 

Please refer to attached file for CBSE Class 9 OTBA Science Sample Question Paper

Sample Papers for Class 9 Science
CBSE Class 9 Chemistry Sample Paper Set A
CBSE Class 9 OTBA Chemistry Sample Question Paper
CBSE Class 9 OTBA Physics Sample Question Paper
CBSE Class 9 OTBA Science Sample Question Paper
CBSE Class 9 Science OTBA Guidance issued by CBSE
CBSE Class 9 Science Practicals Sample Paper 1
CBSE Class 9 Science Practicals Sample Paper 2
CBSE Class 9 Science Practicals Sample Paper 3
CBSE Class 9 Science Sample Paper A
CBSE Class 9 Science Sample Paper B
CBSE Class 9 Science Sample Paper C
CBSE Class 9 Science Sample Paper D
CBSE Class 9 Science Sample Paper E
CBSE Class 9 Science Sample Paper F
CBSE Class 9 Science Sample Paper G
CBSE Class 9 Science Sample Paper H
CBSE Class 9 Science Sample Paper I
CBSE Class 9 Science Sample Paper J
CBSE Class 9 Science Sample Paper K Solved
CBSE Class 9 Science Sample Paper L
CBSE Class 9 Science Sample Paper M Solved
CBSE Class 9 Science Sample Paper N
CBSE Class 9 Science Sample Paper O Solved
CBSE Class 9 Science Sample Paper P Solved
CBSE Class 9 Science Sample Paper Q Solved
CBSE Class 9 Science Sample Paper R Solved
CBSE Class 9 Science Sample Paper S
CBSE Class 9 Science Sample Paper Set 1
CBSE Class 9 Science Sample Paper Set 10
CBSE Class 9 Science Sample Paper Set 11
CBSE Class 9 Science Sample Paper Set 12
CBSE Class 9 Science Sample Paper Set 13
CBSE Class 9 Science Sample Paper Set 14
CBSE Class 9 Science Sample Paper Set 15
CBSE Class 9 Science Sample Paper Set 16
CBSE Class 9 Science Sample Paper Set 17
CBSE Class 9 Science Sample Paper Set 18
CBSE Class 9 Science Sample Paper Set 19
CBSE Class 9 Science Sample Paper Set 2
CBSE Class 9 Science Sample Paper Set 20
CBSE Class 9 Science Sample Paper Set 21 with Answers
CBSE Class 9 Science Sample Paper Set 22 with Answers
CBSE Class 9 Science Sample Paper Set 23 with Answers
CBSE Class 9 Science Sample Paper Set 24
CBSE Class 9 Science Sample Paper Set 25
CBSE Class 9 Science Sample Paper Set 3
CBSE Class 9 Science Sample Paper Set 4
CBSE Class 9 Science Sample Paper Set 5
CBSE Class 9 Science Sample Paper Set 6
CBSE Class 9 Science Sample Paper Set 7
CBSE Class 9 Science Sample Paper Set 8
CBSE Class 9 Science Sample Paper Set 9
CBSE Class 9 Science Sample Paper Set A
CBSE Class 9 Science Sample Paper Set B
CBSE Class 9 Science Sample Paper Set C
CBSE Class 9 Science Sample Paper Set D
CBSE Class 9 Science Sample Paper Set E
CBSE Class 9 Science Sample Paper Set F
CBSE Class 9 Science Sample Paper Set G
CBSE Class 9 Science Sample Paper Set H
CBSE Class 9 Science Sample Paper Set I
CBSE Class 9 Science Sample Paper Set J
CBSE Class 9 Science Sample Paper Set K
CBSE Class 9 Science Sample Paper Set L
CBSE Class 9 Science Sample Paper Set M
CBSE Class 9 Science Sample Paper Set N
CBSE Class 9 Science Sample Paper Set O
CBSE Class 9 Science Sample Paper Set P
CBSE Class 9 Science Sample Paper Set Q
CBSE Class 9 Science Sample Paper Set R
CBSE Class 9 Science Sample Paper Set S
CBSE Class 9 Science Sample Paper Set T
CBSE Class 9 Science Sample Paper Set U
CBSE Class 9 Science Sample Paper Set V
CBSE Class 9 Science Sample Paper Set W
CBSE Class 9 Science Sample Paper Set X
CBSE Class 9 Science Sample Paper Set Y
CBSE Class 9 Science Sample Paper Set Z
CBSE Class 9 Science Sample Paper T
CBSE Class 9 Science Sample Paper Term 1
CBSE Class 9 Science Sample Paper U
CBSE Class 9 Science Sample Paper V
CBSE Class 9 Science Sample Paper W
CBSE Class 9 Science Sample Paper X
CBSE Class 9 Science Sample Paper Y
CBSE Class 9 Science Sample Paper Z

Important Practice Resources for Class 9 Science

How to download CBSE Class 9 OTBA Science Sample Question Paper in PDF?

Students can easily download the CBSE Class 9 OTBA Science Sample Question Paper from our website to prepare for their upcoming examinations. To score high marks, it is important for Class 9 students to understand the exaact pattern as per which teachers design the question papers. We strongly suggest that you practice these latest sample papers for Science and solve different types of questions that are expected to come this year. You can downloadin PDF format so that you can practice offline. We also recommend that Class 9 students solve these papers actual exam conditions at home.

Why should you solve CBSE Class 9 OTBA Science Sample Question Paper?

Practicing these model papers has several benefits for Class 9 students:

  • New Question Bank: This set has fresh questions for Science which are different from previous years.
  • Exam Pattern Knowledge: Solving more sets will help you to understand the weightage of each chapter in Class 9 and also the type of questions asked.
  • Identify Weak Areas: Comparing your score in each set to find out topics in Class 9 Science for which you need hard work.
  • Speed and Accuracy: Attempting MCQ questions and long-form problems for Class 9 Science makes you faster and better and you will be able to finish your exam on time.

What should you do after solving CBSE Class 9 OTBA Science Sample Question Paper?

  1. Check Your Work: Match your answers with the solutions given by our teachers in the Science Sample Paper PDF.
  2. Learn from Mistakes: Class 9 students should focus on the questions which you solved incorrectly and understand the error.
  3. Revision: If you find a question difficult you shoul refer to NCERT book for Class 9 Science to understand concepts and then try the question again.
  4. Continuous Practice: Solve multiple sets of Science sample papers from studiestoday.com to build confidence before the CBSE exams.
Where can I download the PDF for CBSE Class 9 OTBA Science Sample Question Paper?

You can download the complete PDF for CBSE Class 9 OTBA Science Sample Question Paper for free from StudiesToday.com. Our resources for Class 9 Science are updated for the latest academic session and follow the official exam pattern.

Are solutions provided for CBSE Class 9 OTBA Science Sample Question Paper?

Yes, CBSE Class 9 OTBA Science Sample Question Paper comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Science to help students of Class 9 understand correct methodology and marking scheme.

How can practicing CBSE Class 9 OTBA Science Sample Question Paper help in exam preparation?

Practicing this Science paper helps in time management and identifying important topics. For Class 9, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.

Is the CBSE Class 9 OTBA Science Sample Question Paper accessible on mobile and tablets?

Yes, all our study materials for Class 9 Science are provided in a mobile-friendly PDF format. You can easily download CBSE Class 9 OTBA Science Sample Question Paper on your mobile device.