CBSE 10th Science Board Exam 2019: Chapter-wise Weightage, Important Diagrams, Topics

CBSE Class 10th Science Board Exam 2019 is scheduled to be held on 13th March (Wednesday) from 10.30 A.M. to 1.30 P.M. Check important topics for upcoming CBSE Class 10th Science Board Exam 2019.

CBSE Class 10 Science Paper 2019: Important Questions
CBSE Class 10 Science Paper 2019: Important Questions

Check important solved questions for CBSE 10th Science Board Exam 2019. CBSE 10th Science board exam 2019 on 13th March. Learn about important diagrams, solved questions, topics, chapter-wise weightage (10th Science NCERT Textbooks) & other important tips for the preparation of upcoming CBSE Class 10th Science Board Exam 2019. As per CBSE Date Sheet 2019, CBSE Class 10th Science Board Exam 2019 is scheduled to be held on 13th March (Wednesday) from 10.30 A.M. to 1.30 P.M. So, a few days are left for board exam preparation. Students preparing for the paper are enquiring about important questions, concepts, diagrams etc for upcoming CBSE Class 10th Science Board Exam 2019.

Although all the topics mentioned in the latest CBSE Class 10th Science Syllabus are important but after the analysis of previous years’ papers, latest CBSE Syllabus, Sample Papers & NCERT textbooks, we have learned that some topics are very important for upcoming CBSE Class 10th Science Board Exam 2019.

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If you want to learn about the latest CBSE Syllabus, exam pattern and other important details then you can check it from an article from the link given below

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CBSE Sample Paper 2019 - All Subjects (issued by CBSE) - Check this link

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CBSE Class 10 Science Syllabus 2019

Check Solved Questions Expected to be Asked in CBSE Class 10th Science Board Exam 2019

Complete detail about important topics, diagram, and chapter-wise weightage (NCERT Textbook) is given below

Chapter 1: Chemical Reactions and Equations [Expected weightage - 5 marks]

In the NCERT Textbook of Class 10 Science, 5 types of chemical reaction are given in chapter 1 with some examples. All the reactions are expected to be asked this year’s question paper. Some chemical reactions are also mentioned in the syllabus of practical exam. Those reactions are also important for the board exam.

Details of some very important chemical reactions:

• Action of water on quick lime

• Action of heat on ferrous sulphate crystals

• Iron nails kept in copper sulphate solution

• Reaction between sodium sulphate and barium chloride solutions

Questions on Corrosion & Rancidity are also expected in the paper.

Chapter 2: Acids, Bases and Salts [Expected weightage - 3 marks]

Some of the important topics from which questions are expected to be asked in upcoming CBSE Class 10th Science Board Exam 2019 are given below

Preparation, Reactions, Uses of the following substances:

• Sodium Hydroxide

• Bleaching Powder

• Baking Soda

• Washing Soda,

• Plaster of Paris (Most Important)

Some important portion from the syllabus of practical

Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with:

(a) Litmus Solution (Blue/Red)

(b) Zinc Metal

(c) Solid Sodium Carbonate

Chapter 3: Metals and Non-Metals [Expected weightage - 7 marks]

• Properties of Metals and Non-Metals: Physical & Chemical

• Formation and Properties of Ionic Compounds (NaCl, MgCl2),

• Basic Terms Used in Metallurgy: Calcination, Roasting etc.

• Activity Series

• Corrosion and its prevention

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Chapter 4: Carbon and its Compounds [Expected weightage – 5 marks]

• Covalent Bonding in Carbon Compounds

• Main Reasons for Forming Large Number of Compounds: Catenation , Tetra-Valency

• Homologous series:

• Nomenclature of Carbon Compounds Containing Functional Groups 

(Halogens, Alcohol, Ketones, Aldehydes, Alkanes and Alkynes)

• Saturated & Unsaturated hydrocarbons:

• Chemical Properties of Carbon Compounds

• Ethanol and Ethanoic acid

• Soaps & Detergents

Chapter 5: Periodic Classification of Elements [Expected weightage - 5 marks]

Gradation in Properties:  Valency, Atomic number, Metallic and Non-metallic properties.

Chapter 6: Life Processes [Expected weightage - 7 marks]




Transportation in Animals

Transportation in Plants


Important Diagrams

→ Human Respiratory System

→ Human Heart

→ Cross Section of A Leaf

→ Nutrition in Amoeba

→ Excretory System

Chapter 7: Control and Coordination [Expected weightage - 5 marks]

• Control and Co-ordination in Animals & Plants

• Tropic Movements in Plants

• Plant & Animal Hormones

• Control  and  Co-ordination  in  Animals

• Nervous system

• Voluntary, Involuntary and Reflex Action

• Chemical Co-ordination

• Important Diagrams

→ Structure of Neuron

→ Human Brain

Chapter 8: How do Organisms Reproduce? [Expected weightage - 10 marks]

• Reproduction in Animals and Plants (Asexual and Sexual)

• Safe Sex vs HIV/AIDS

• Important Diagrams

→ Germination of Pollen on Stigma

→ Budding in Hydra

→ Binary fission in Amoeba

→ Longitudinal section of flower

Chapter 9: Heredity and Evolution [Expected weightage – 1 to 3 marks]

• Heredity

• Mendel’s Contribution

• Laws for Inheritance of Traits

• Sex Determination

• Basic Concepts of Evolution

Chapter 10: Light – Reflection and Refraction [Expected weightage - 7 marks]

• Basic Terms: Centre of Curvature, Principal Axis, Principal Focus, Focal Length,

• Images Formed by Spherical Mirrors

• Mirror formula & Magnification (Numerical, No Derivation)

• Refractive index (Numerical)

• Refraction & Laws of refraction

• Refraction of Light by Spherical Lens

• Image Formed by Spherical Lenses

• Lens Formula & Magnification (Numerical)

• Power of a lens (Numerical)

Chapter 11: Human Eye and Colourful World [Expected weightage - 5 marks]

• Functioning of a Lens in Human Eye

• Power of Accommodation

• Defects of Vision and Their Corrections

• Applications of Spherical Mirrors & Lenses

• Refraction of Light through a Prism

• Dispersion & Scattering of Light (Daily Life Examples)

Chapter 12: Electricity [Expected weightage - 8 marks]

• Ohm’s law, Resistance, Resistivity

• Factors on Which the Resistance of a Conductor Depends

• Series & Parallel Combination of Resistors and Its Applications in Daily Life

• Heating Effect of Electric Current and Its Applications in Daily Life

• Electric Power

• Interrelation between P, V, I and R

Chapter 13: Magnetic Effects of Electric Current [Expected weightage - 5 marks]

• Magnetic Field, Magnetic Field Lines

• Magnetic Field Due to A Current Carrying Conductor

• Magnetic Field Due to Current Carrying Coil or Solenoid

• Force on current carrying conductor

• Fleming’s Left & Right Hand Rule

• Induced Potential Difference & current

• Electric Motor & Generator

• AC vs DC

• Domestic Electric Circuits

Chapter 14: Sources of Energy [Expected weightage - 1 mark]

• Different Forms of Energy

• Conventional and Non-Conventional Sources of Energy

• Renewable versus Non-Renewable Sources of Energy.

• Fossil fuels

• Solar Energy

• Biogas

• Wind, Water  and  Tidal  energy

• Nuclear  energy

Chapter 15: Our Environment [Expected weightage - 3 marks]

• Environmental problems, Ozone depletion

• Eco-system

• Biodegradable and Non-Biodegradable Substances.

• Waste Production and Their Solutions

Chapter 16: Management of Natural Resources [Expected weightage - 3 marks]

• Management of Natural Resources

• Conservation and Judicious Use of Natural Resources

• Coal and Petroleum Conservation

• Sustainability of Natural Resources

• Big Dams: Advantages, Limitations, Alternatives

• Water Harvesting.

• Examples of People’s Participation for Conservation of Natural Resources

• Forest and Wild Life

CBSE Sample Papers for Class 10 Board Exam 2019

CBSE 10th Date sheet 2019: Analysis & Exam Preparation Tips

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