CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved

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Access and download CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved, carefully designed as per the latest 2026-27 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.

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Every Class 10 Science student should practice with these question papers to understand question trends and marks distribution. Working through them in a timed test environment makes you faster and more accurate. Use the full CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved for your daily self-tests.

Science Question Papers for Class 10 (2026-27)

Section – A
1. Covalent compounds have low melting and boiling point. Why ?
 
2. How many metals are present in second period of periodic table ?
 
3. Answer question numbers 3(a) to 3(d) on the basis of your understanding of the following paragraph and the related studied concepts. Geothermal energy is the energy produced by the heat of molten rocks formed in the deeper hot regions of the earth’s crust. This energy is harnessed to generate electricity. When water is made to flow deep underground in the rocks it returns as steam (or hot water, which is later converted to steam) to drive a turbine on an electric power generator.
In India, exploration and study of geothermal fields started in 1970. The Geological Survey in India has identified 350 geothermal energy locations in the country. The most promising of these is in Puga valley of Ladakh. The estimated potential for geothermal energy in India is about 10000 MW. There are seven geothermal provinces in India namely the Himalayas, Sohna, West coast, Cambay, Son-Narmada-Tapi; Godavari and Mahanadi. Most power stations in India produce Alternating Current (A.C).
 
(a) What are geothermal energy hot-spots ? 
 
(b) Name two countries, other than India, where power plants based on geothermal energy are operational.
 
(c) Name the phenomenon that explains the working of an electric generator.
 
(d) State an important advantage of using AC over DC.
 
4. Answer question numbers 4(a) to 4(d) on the basis of your understanding of the following information and related studied concepts.
 
Thyroid gland is a bilobed structure situated in our neck region. It secretes a hormone called thyroxine. Iodine is necessary for the thyroid gland to make thyroxine. Thyroxine regulates carbohydrate, protein and fat metabolism in the body. It promotes growth of body tissues also. When there is an excess of thyroxine in the body, a person suffers from hyperthyroidism and if this gland is underactive it results in hypothyroidism. Hyperthyroidism is diagnosed by blood tests that measure the levels of thyroxine and Thyroid Stimulating Hormone (TSH).
Hypothyroidism is caused due to the deficiency of iodine in our diet resulting in a disease called goitre. Iodised salt can be included in our diet to control it.
 
(a) Where is thyroid gland situated in our body ? 
 
(b) State the function of thyroxine in human body. 
 
(c) What is hyperthyroidism ? 
 
(d) How can we control hypothyroidism ? 
 
5. Consider the following reasons for the reddish appearance of the sun at the sunrise or the sunset :
 
A. Light from the sun near the horizon passes through thinner layers of air.
 
B. Light from the sun covers larger distance of the earth’s atmosphere before reaching our eyes.
 
C. Near the horizon, most of the blue light and shorter wavelengths are scattered away by the particles.
 
D. Light from the sun near the horizon passes through thicker layers of air.
 
The correct reasons are
 
(a) A and C only
 
(b) B, C and D
 
(c) A and B only
 
(d) C and D only
 
Please click on below link to download CBSE Class 10 Science Boards 2020 Question Paper Solved Set B.

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CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved & Previous Year Question Papers for Class 10 Science

Previous Year Question Papers: Class 10 Science

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 Boards 2020 Question Paper Set 02 Solved 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.

Boost Your Exam Score with Past Papers

Consistent practice using the CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved is a proven strategy to elevate your Class 10 Science performance. These documents clarify the official marking scheme and framework followed by the CBSE. Simulating real test conditions at home helps hone your time management abilities, ensuring you finish your Science paper comfortably within the official time limit.

Mastering Numerical & Conceptual Problems

Downloading the CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved ensures you can revise offline without requiring constant internet access. These curated collections provide excellent practice for numerical challenges and standard answer formatting. Following your practice, compare results with professional teacher solutions alongside our recommended Class 10 Science sample papers and MCQ assessments for thorough revision.

FAQs

Where can I download the official PDF for CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved?

The CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved 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 Boards 2020 Question Paper Set 02 Solved based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved 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 Boards 2020 Question Paper Set 02 Solved help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved 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 Boards 2020 Question Paper Set 02 Solved in different languages?

Yes, where applicable, CBSE Class 10 Science Boards 2020 Question Paper Set 02 Solved 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 Boards 2020 Question Paper Set 02 Solved, are provided free of charge in mobile-friendly PDF.