CBSE Class 7 · Science

CBSE Class 7 Science Exam Preparation

Nutrition, acids, weather, and forests — science in the real world

Complete chapter-wise preparation guide for CBSE Class 7 Science. Covers nutrition in plants and animals, acids/bases, physical and chemical changes, climate, forests, and electric current.

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80

Theory Marks

20

Practical Marks

3 hours

Exam Duration

16

Total Chapters

Chapter-Wise Marks Breakdown

98 theory marks
ChapterMarksDifficulty
Nutrition in Plants7Easy
Nutrition in Animals7Easy
Fibre to Fabric5Easy
Heat6Medium
Acids, Bases and Salts7Medium
Physical and Chemical Changes7Medium
Weather, Climate and Adaptations6Easy
Winds, Storms and Cyclones6Medium
Soil5Easy
Respiration in Organisms7Medium
Transportation in Animals and Plants7Medium
Reproduction in Plants6Easy
Motion and Time6Easy
Electric Current and Its Effects7Medium
Light6Easy
Forests & Waste Water Story3Easy

Topics That Appear Every Year

01Photosynthesis — equation and conditions
02Human digestive system — labelled diagram
03Acids and bases — indicators and neutralisation
04Physical vs chemical changes — examples of each
05Respiration — aerobic vs anaerobic with equations
06Transportation — heart structure and blood flow
07Electric circuits — heating and magnetic effects
08Cyclone formation — step-by-step

Study Strategy for 90+

1

Life Science (Nutrition, Respiration, Transport) needs diagrams — draw daily

2

Acids & Bases: make a table of common acids, bases, and their properties

3

Physical vs Chemical changes — most commonly confused topic, memorise 5 examples each

4

Electric current: draw circuits with correct symbols — marks awarded for accurate diagrams

5

Write definitions precisely — CBSE awards marks for key words like 'aerobic', 'anaerobic'

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