CBSE Class 10 Science and Social Science — Unit-wise Marks 2026-27 and What Is Not in the Board Exam

For CBSE Class 10 Science and Social Science, knowing the unit-wise marks helps you plan revision, and knowing which chapters are assessed only in school saves time before the board exam.

This guide gives both, from the official CBSE curriculum for 2026-27. Always confirm on cbseacademic.nic.in, because CBSE can update the syllabus.

Science (80 marks + 20 internal assessment)

Chemical Substances – Nature and Behaviour: 25 marks.
World of Living: 25 marks.
Effects of Current: 13 marks.
Natural Phenomena (light): 12 marks.
Natural Resources: 5 marks.
Chemistry and Biology units together carry 50 of the 80 marks. Some topics (for example, the history of the periodic classification) are assessed only in school (formatively), not in the board paper.

Social Science (80 marks + 20 internal assessment)

History (India and the Contemporary World – II): 20 marks, including 2 for map pointing.
Geography (Contemporary India – II): 20 marks, including 3 for map pointing.
Political Science (Democratic Politics – II): 20 marks.
Economics (Understanding Economic Development): 20 marks.
Map skills carry 5 marks in all, so practise the map list from the syllabus.

Chapters not fully in the board exam (Social Science)

The Age of Industrialisation (History) is assessed in periodic assessment only.
Lifelines of National Economy (Geography): only map pointing is evaluated in the board exam.
Parts of The Making of a Global World and Globalisation and the Indian Economy are done as an interdisciplinary project (internally assessed for 5 marks); the rest is in the board exam.
Consumer Rights is done as project work.
Check the syllabus for the exact sub-topics that are in or out of the board paper.

How to use this when revising

Spend the most time on the heaviest units, but cover every chapter that is in the board exam.
Remember the section rule for answer books (Biology, Chemistry and Physics; History, Geography, Political Science and Economics); see our Science and SST section-rule guide.
Solve the CBSE sample papers and marking schemes under time.

Frequently Asked Questions

What is the unit-wise weightage for CBSE Class 10 Science 2026-27?

From the official syllabus (80 marks): Chemical Substances – Nature and Behaviour 25, World of Living 25, Effects of Current 13, Natural Phenomena 12 and Natural Resources 5. Another 20 marks are internal assessment.

What is the marks distribution for CBSE Class 10 Social Science?

History, Geography, Political Science and Economics carry 20 marks each in the 80-mark paper. History includes 2 marks for map pointing and Geography 3, so map skills total 5 marks.

Which Social Science chapters are not in the CBSE Class 10 board exam?

For 2026-27, The Age of Industrialisation is assessed in periodic assessment only, only map pointing from Lifelines of National Economy is evaluated in the board exam, parts of The Making of a Global World and Globalisation are interdisciplinary projects, and Consumer Rights is project work.

How many marks are for map work in CBSE Class 10 SST?

Map skills carry 5 marks: 2 in History and 3 in Geography, according to the 2026-27 syllabus.

Does WonderZ offer CBSE Class 10 tuition?

Yes. WonderZ Learning offers online CBSE Class 10 tuition in Science, Social Science, Maths and English for students in Kerala and the Gulf, with 1-on-1, small batch and app classes. Fees are flexible and negotiable, and you can book a free demo class.

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