CBSE Class 10 Science Compartment Question Paper Solved 2020 Set B

Access and download CBSE Class 10 Science Compartment 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 Compartment Question Paper Solved 2020 Set B to begin your self-assessment today.

Science Class 10 Question Paper PDF with Solutions

SECTION A
1. How many pairs of chromosomes are present in human beings ? 
 
2. Define pole of a spherical mirror. 
 
3. Answer question numbers 3(a) - 3(d) on the basis of your understanding of the following paragraph and the related studied concepts :
 
Matter around us is found in the form of elements, compounds and mixtures. The elements contain atoms of only one type. Around the year 1800, only 30 elements showing different properties were known.
 
Scientists of that age discovered a pattern in their properties and based on that pattern, several attempts were made to classify elements. The earliest attempt was to classify the elements as metals and non-metals.
 
The latest is the ‘Modern Periodic Table’. This table consists of 7 periods and 18 groups. Each element of a group in the periodic table has the identical outer shell electronic configuration. In other words, the groups in the periodic table signify an identical outer shell electronic configuration. As we go down the group in the periodic table, the number of shells increases.
 
3(a) Write the need to classify elements. 
 
3(b) How many groups are there in the ‘Modern Periodic Table’ ? 
 
3(c) Which one of the following statements is not correct about the ‘Modern Periodic Table’ ? 
 
(A) It is based on atomic masses.
 
(B) The position of isotopes is not disputed.
 
(C) The position of isotopes is easily assigned.
 
(D) It separates metals from non-metals.
 
3(d) The cause of periodicity of properties of elements is 
 
(A) Increasing atomic radius
 
(B) Increasing atomic mass
 
(C) Increasing nuclear charge
 
(D) The recurrence of similar outer electronic configuration
 
4. Answer question numbers 4(a) - 4(d) on the basis of your understanding of the following paragraph and the related studied concepts :
 
There are different forms of energy and one form of energy can be converted into another. When we light a wax candle, the process is highly exothermic and on burning, the chemical energy of the wax gets converted into heat and light. A good source of energy is to be selected for the choice of work to be done. In ancient times, wood was the most
common source of heat energy. We, in our daily lives, use various energy sources for doing the work. Nowadays we use diesel and electricity to run trains. We also use fossil fuels in vehicles which has some serious disadvantages, mainly air pollution. The recent example of air pollution was ‘Smog’ in the National Capital Region of Delhi. This pollution was a
result of burning ‘Parali’ in northern states of the country, which affected the eyes and also caused serious respiratory problems.
 
 
Please click on below link to download CBSE Class 10 Science Compartment 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 Compartment 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 Compartment 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 Compartment Question Paper Solved 2020 Set B

Regularly practicing CBSE Class 10 Science Compartment 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 Compartment 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 Compartment Question Paper Solved 2020 Set B?

The CBSE Class 10 Science Compartment 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 Compartment Question Paper Solved 2020 Set B based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 10 Science Compartment 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 Compartment Question Paper Solved 2020 Set B help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 10 Science Compartment 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 Compartment Question Paper Solved 2020 Set B in different languages?

Yes, where applicable, CBSE Class 10 Science Compartment 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 Compartment Question Paper Solved 2020 Set B, are provided free of charge in mobile-friendly PDF.