CBSE Class 10 Science Boards 2020 Question Paper Set 04 Solved

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Previous Year Question Papers for Class 10 Science

Explore authentic exam materials through the CBSE Class 10 Science Boards 2020 Question Paper Set 04 Solved. Tailored for Class 10 learners, utilizing these Science previous year papers ensures thorough preparation and strengthens time management skills before final CBSE evaluations.

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SECTION A
1. Which oils should be chosen for cooking to remain healthy ? 
 
2. Define the term induced electric current. 
 
3. Answer question numbers 3(a) - 3(d) on the basis of your understanding of the following paragraph and the related studied concepts :
 
Around the year 1800, only 30 elements were known. Dobereiner in 1817 and Newlands in 1866 tried to arrange the then known elements and framed laws which were rejected by the scientists. Even after the rejection of the proposed laws, many scientists continued to search for a pattern that correlated the properties of elements with their atomic masses.
The main credit for classifying elements goes to Mendeleev for his most important contribution to the early development of a Periodic table of elements wherein he arranged the elements on the basis of their fundamental property, the atomic mass and also on the similarity of chemical properties. The formulae of their hydrides and oxides were treated as basic criteria for the classification of the elements.
 
However, Mendeleev’s classification also had some limitations as it could not assign the position to isotopes. He also left some gaps in the periodic table.
 
3(a) State Mendeleev’s Periodic Law. 
 
3(b) Why did Mendeleev leave some gaps in the Periodic table ? 
 
3(c) If the letter ‘R’ was used to represent any of the elements in the group, then the hydride and oxide of carbon would respectively be represented as 
 
(i) RH4,       RO
(ii) RH4,      RO2
(iii) RH2,     RO2
(iv) RH2,     RO
 
3(d) Isotopes are 
 
(i) Atoms of an element with similar chemical properties but different atomic masses.
 
(ii) Atoms of different elements with similar chemical properties but different atomic masses.
 
(iii) Atoms of an element with different chemical properties but same atomic masses.
 
(iv) Atoms of different elements with different chemical properties but same atomic masses.
 
Please click on below link to download CBSE Class 10 Science Boards 2020 Question Paper Solved Set D.

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Practice Exam Question Papers for Class 10 Science CBSE Class 10 Science Boards 2020 Question Paper Set 04 Solved

Class 10 Science Past Exam Papers & Resources

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Where can I download the official PDF for CBSE Class 10 Science Boards 2020 Question Paper Set 04 Solved?

The CBSE Class 10 Science Boards 2020 Question Paper Set 04 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 04 Solved based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 10 Science Boards 2020 Question Paper Set 04 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 04 Solved help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 10 Science Boards 2020 Question Paper Set 04 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 04 Solved in different languages?

Yes, where applicable, CBSE Class 10 Science Boards 2020 Question Paper Set 04 Solved is available in both English and Hindi mediums. All students from Class 10 can access Science study material in their preferred language.

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