CBSE Class 10 Science 2022-23 Chapter-Wise Weightage

I

Chemical Substances-Nature and Behaviour

25

II

World of Living

25

III

Natural Phenomena

12

IV

Effects of Current

13

V

Natural Resources

05

Total

80

Unit I: Chemical Substances - Nature and Behaviour

• Chemical reactions
• Acids, bases and salts
• Metals and nonmetals
• Carbon compounds

Unit II: World of Living

• Life processes
• Control and co-ordination in animals and plants
• Reproduction
• Heredity and Evolution

Unit III: Natural Phenomena

• Reflection of light by curved surfaces
• Refraction of light by spherical lens

Unit IV: Effects of Current

• Magnetic effects of current

Unit V: Natural Resources

• Our environment

1 Mark

20

20 × 1= 20

2 Marks

6

6 × 2= 12

3 Marks

7

7× 3= 21

4 Marks

3

3 × 4= 12

5 Marks

3

5 × 3 = 15

Total

39

80

Internal assessment

-

20