CBSE Class 10 Science Question Paper Solved 2020 Set B

Access and download CBSE Class 10 Science Question Paper Solved 2020 Set B, carefully designed as per the latest 2025-26 examination guidelines issued by CBSE, NCERT, and KVS. These Class 10 Science previous year question papers include detailed solutions, helping students to assess their performance and identify and improve key areas before the final exams.

Solved Science Question Papers for Class 10

Practicing these Class 10 Science question papers is the best way to understand the actual exam pattern and marking scheme. By solving these papers under timed conditions, Class 10 students can improve their speed and accuracy. Download the full CBSE Class 10 Science Question Paper Solved 2020 Set B to begin your self-assessment today.

Science Class 10 Question Paper PDF with Solutions

CHEMICAL REACTIONS AND EQUATIONS
 
One mark questions
 
1. What change in color is observed when white silver chloride is left exposed to sunlight? State the type of chemical reaction in this change.
 
2. Why do gold and platinum not corrode in moist air ?
 
3. A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by the emission of light . if the burning ribbon is now placed in an atmosphere of nitrogen, it forms a compound Y . write the chemical formulae of X and Y.
 
4. Name the reducing agent in the following reaction :
 
3MnO2 + 4Al → 3Mn + 2Al2O3
 
Two mark questions
 
5. Why do fireflies glow at night?
 
6. Write balanced chemical equations for the reactions that take place during respiration. Identify the type of combination reaction that takes place during this process and justify the name. Give one more example of this type of reaction.
 
7. A zinc plate put into a solution of copper sulphate kept in a glass container. It was found that blue color of the solution gets fader with the passage of time. After a few days, when zinc plate was taken out of the solution, a number of holes were observed on it.
 
i. State the reasons for the changes observed on the zinc plate.
 
ii. Write the chemical equation for the reaction involved.
 
8. Write a balanced chemical equation for the reaction between sodium chloride and silver nitrate indicating the physical state of the reactions and the products.
 
9. Consider the following chemical reaction:
 
X + barium chloride ______________ Y + sodium chloride (white ppt)
 
a) Identify ‘X’ and ‘Y’
 
b) Name the type of reaction.
 
Three mark questions
 
10.When you have mixed the solutions of lead (II) nitrate and potassium  iodide,
 
i. What was the color of the precipitate formed and, can you name the precipitate?
 
ii. Write the balanced chemical equation for this reaction.
 
iii. Is this also a double displacement reaction?
 
11.Write the chemical equation of the reaction in which the following changes have taken place with an example of each :
 
I. Change in color
 
II. Change in temperature
 
III. Formation of precipitate

 

Please click on below link to download CBSE Class 10 Science Question Paper Solved 2020 Set B

2012
CBSE Class 10 Science Question Paper 2012 (1)
CBSE Class 10 Science Question Paper 2012 (10)
CBSE Class 10 Science Question Paper 2012 (11)
CBSE Class 10 Science Question Paper 2012 (12)
CBSE Class 10 Science Question Paper 2012 (13)
CBSE Class 10 Science Question Paper 2012 (14)
CBSE Class 10 Science Question Paper 2012 (15)
CBSE Class 10 Science Question Paper 2012 (16)
CBSE Class 10 Science Question Paper 2012 (2)
CBSE Class 10 Science Question Paper 2012 (3)
CBSE Class 10 Science Question Paper 2012 (4)
CBSE Class 10 Science Question Paper 2012 (5)
CBSE Class 10 Science Question Paper 2012 (6)
CBSE Class 10 Science Question Paper 2012 (7)
CBSE Class 10 Science Question Paper 2012 (8)
CBSE Class 10 Science Question Paper 2012 (9)
CBSE Class 10 Science Question Paper SA 2 2012 (1)
CBSE Class 10 Science Question Paper SA 2 2012 (10)
CBSE Class 10 Science Question Paper SA 2 2012 (11)
CBSE Class 10 Science Question Paper SA 2 2012 (12)
CBSE Class 10 Science Question Paper SA 2 2012 (13)
CBSE Class 10 Science Question Paper SA 2 2012 (14)
CBSE Class 10 Science Question Paper SA 2 2012 (15)
CBSE Class 10 Science Question Paper SA 2 2012 (16)
CBSE Class 10 Science Question Paper SA 2 2012 (17)
CBSE Class 10 Science Question Paper SA 2 2012 (2)
CBSE Class 10 Science Question Paper SA 2 2012 (3)
CBSE Class 10 Science Question Paper SA 2 2012 (4)
CBSE Class 10 Science Question Paper SA 2 2012 (5)
CBSE Class 10 Science Question Paper SA 2 2012 (6)
CBSE Class 10 Science Question Paper SA 2 2012 (7)
CBSE Class 10 Science Question Paper SA 2 2012 (8)
CBSE Class 10 Science Question Paper SA 2 2012 (9)
CBSE Class 10 Science Question Paper SA1 2012
CBSE Class 10 Science Question Paper SA2 2012 (1)

CBSE Class 10 Science Question Paper Solved 2020 Set B

To understand the types of questions asked in past examinations, it is very important for Class 10 students to solve the CBSE Class 10 Science Question Paper Solved 2020 Set B provided above. You can easily download these past papers for Class 10 Science in PDF format for the last 10 years. By practicing these actual exam questions you will gain an understanding of the difficulty level and the variety of topics covered over the years. By solving these Previous Year Papers (PYPs) you will understand both descriptive and MCQ questions in your final tests.

Importance of solving CBSE Class 10 Science Question Paper Solved 2020 Set B

Regularly practicing CBSE Class 10 Science Question Paper Solved 2020 Set B is the best way to improve your score in Class 10 Science. These papers will give you details of the marking scheme and the paper structure used by the CBSE. By regularly attempting these under actual exam conditions at home, you can slowly improve your time management skills, which will help you to complete your Science paper within the allowed duration.

Benefits of downloading CBSE Class 10 Question Papers

Having the CBSE Class 10 Science Question Paper Solved 2020 Set B in PDF format allows you to revise key concepts anywhere, even without an internet connection. These sets are a reliable tool to practice numerical problems and understand the correct approach to all types of answers. After solving the questions, you should compare your work with the solutions provided by our teachers. Along with these papers, students should always solve the Class 10 Science Sample Papers and MCQ tests on studiestoday.com for a complete revision.

Where can I download the official PDF for CBSE Class 10 Science Question Paper Solved 2020 Set B?

The CBSE Class 10 Science Question Paper Solved 2020 Set B is available for download on StudiesToday.com. It includes complete set with all sections so that Class 10 students can practice with the exact same paper that came in the CBSE exams.

Are the solutions for CBSE Class 10 Science Question Paper Solved 2020 Set B based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 10 Science Question Paper Solved 2020 Set B are prepared by subject matter experts as per official marking scheme. Class 10 students will understand the structure of answers and 'step-marks' methodology Science.

How does solving CBSE Class 10 Science Question Paper Solved 2020 Set B help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 10 Science Question Paper Solved 2020 Set B is important to understand repeat themes and question difficulty levels of Science. It helps Class 10 students to test their time management skills too.

Can I access CBSE Class 10 Science Question Paper Solved 2020 Set B in different languages?

Yes, where applicable, CBSE Class 10 Science Question Paper Solved 2020 Set B is available in both English and Hindi mediums. All students from Class 10 can access Science study material in their preferred language.

Is there a charge to download the CBSE Class 10 Science solved papers?

No, all previous year question papers on StudiesToday, including CBSE Class 10 Science Question Paper Solved 2020 Set B, are provided free of charge in mobile-friendly PDF.