Board Exam Hacks: Tips for CBSE Class 10 Science

Meritnation|Feb 2nd, 2018 06:36pm

It’s almost time. The pre-boards are behind you and all that remains is that final countdown to your first board exams ever. No more classes to be attended, no more tests, and no more assignments. It’s time now to give your full attention and focus to perfecting your skills in your subjects, whether it is maths, science or any of the theory subjects.


We have something to make your task easier. Exclusively prepared for you by our experts at Meritnation, here is a chapter-wise list of important topics for CBSE Class 10 Science, together with special tips for every chapter. We are sure you will find it useful!


Chapter: How do organisms reproduce

Important Topics:

  1. Modes of asexual reproduction
  2. Structure of flower
  3. Fertilisation in plants
  4. Male and female reproductive system


Method for Quick Understanding:

  1. You must know about reproduction and why it is important for species.
  2. The process of sexual reproduction in plants is very important with detailed knowledge of each event.
  3. The diagrams of male and female reproductive organs are important to understand the concept.

a) The whole process of reproduction in human beings is important and usually can be asked either in the form of short answer type questions or very short answer type questions.

b) Mode of asexual reproduction are important in plants as well as in animals.

c) Birth control and STDs are usually asked in exams, specially the topic of AIDS.


Chapter: Heredity and evolution

Important Topics:

  1. Mendelian crosses
  2. Sex determination
  3. Difference between acquired and inherited traits
  4. Homologous and analogous organs


Method for Quick Understanding:

  1. Mendel experiments are important and all the laws of inheritance.
  2. You should have the basic idea of human evolution, so that you can attempt questions easily.

a) Factors that lead to evolution are often asked.

b) The difference between homologous organs and analogous organs is very much asked question in exams.

Chapter: Our Environment

Important Topics:

  1. Ecosystem and its components
  2. Food chain and food webs
  3. Depletion of ozone layer


Method for Quick Understanding:

  1. Due to the current attention on pollution and ozone depletion it becomes the topic you must have a look at.

a) The difference between biodegradable and non biodegradable resources is often asked question from this chapter.

b) The Water treatment plant with detailed knowledge of all the steps is an important section of the chapter. It can be asked as one long answer type question. It can also be asked in short answer type question like, explain the secondary treatment.

Chapter: Management of Natural Resources

Important Topics:

  1. Need for Management of Natural Resources
  2. Importance And Conservation Of Forest
  3. Steps To Make Water Available To All


Method for Quick Understanding:

  1. You must know the definition and the components of ecosystem.
  2. You must know the need of conservation of natural resources and the different ways of conserving forests and water.

a) The topic of management of natural resources is an important one.

b) The idea of sustainable development is an important topic from exam point of view.

Chapter: Carbon and its Compounds

Important Topics:

  1. Covalent bonding in carbon compounds
  2. Allotropy
  3. Catenation and tetravalency
  4. Saturation and unsaturation in carbon compounds
  5. Structure and formulas of carbon compounds
  6. Structural isomers
  7. Functional groups
  8. Homologous series
  9. Nomenclature
  10. Chemical properties of carbon compounds
  11. Properties of ethanol and ethanoic acid
  12. Soaps and detergents: Advantages and disadvantages


Method for Quick Understanding:

  1. Understand about covalent bonding and its illustration using structures of H2, N2 and O2.
  2. Go through the differences between allotropes of carbon.
  3. Go through the types of chemical reactions of carbon compounds.
  4. Learn the formulas and structures of functional groups.

a) Solve previous year question papers to check your preparation level and emphasize on repeated questions.

b) Practise questions on nomenclature, writing formula and drawing structures of various carbon compounds.

c) Develop homologous series of various functional groups by yourself and practice to name them.

d) Understand various chemical reactions and learn them.


Chapter: Periodic classification of elements

Important Topics:

  1. Döbereiner’s Triads
  2. Newlands’ Law of Octaves
  3. Mendeleev’s periodic table
  4. Modern Periodic Table
  5. Trends in the Modern Periodic Table


Method for Quick Understanding:

  1. Understand the importance of classification of elements and how with time every scientist had contributed significantly in development of modern periodic table.
  2. Understand how elements has been placed in modern periodic table on the basis of atomic number and how electronic configuration of these elements can be written.

a) Read Mendeleev’s periodic table in detail including its merits and demerits.

b) Go through modern periodic table and understand how elements have been classified in it.

c) Summarised form of trends in periodic table:

Chapter: Light – Reflection and Refraction

Important Topics:

  1. Image Formation by Spherical Mirrors
  2. Refraction of Light through Glass Slab
  3. Image Formation by Spherical Lenses
  4. Lens Formula, Magnification and Power


Method for Quick Understanding:

  1. We have already studied these topics in lower grades. But the sign convention, magnifications are new and require more attention.
  2. Understanding of reflection and refraction of light is required. Images formed by mirrors and lenses are of different size and are formed at different positions. They can be virtual or real.
  3. New cartesian sign conventions are used for image formations. Lens formula and mirror formulas are used to determine the positions or the height of object and image. The magnification is ratio of height of image to height of object.

a) Make a chart for Image formation for both the mirrors and lenses separately. Place it at your study to keep them on your tips. Practise ray diagrams for same.

b) Always remember the sign conventions while using lens and mirror formulas. Numericals based on Lens formula, mirror formula, magnifications are asked very frequently.

Chapter: The Human Eye and The Colourful World

Important Topics:

  1. Human Eye Structure
  2. Defects in Vision and Corrections
  3. Dispersion
  4. Atmospheric Refractions
  5. Scattering of Light


Method for Quick Understanding:

  1. Our eye is a lens system based on refraction and forms an image on retina. The ability of eye to focus near and distant objects is called accommodation of eye. Some of us wear specs to correct this accommodation of eye or defects. These defects includes myopia, hypermetropia, presbyopia, etc.
  2. The chapter also focus on some common phenomenons observed due to refraction of light through atmosphere, scattering and dispersion. A thorough reading and understanding the concepts is sufficient.

a) Draw the structure of eye, label it and write the functions of the parts against it.

b) Practise the ray diagram for each defect and correction.

c) However the topics like dispersion, scattering and atmospheric refraction is theoretical, phenomenal based question can be asked directly from the topics.



Chapter: Electricity

Important Topics:

  1. Ohm’s Law and Numericals Based on It
  2. Factors Affecting Resistance of a Conductor
  3. Series and Parallel Combination of Resistances


Chapter: Magnetic Effects of Electric Current

Important Topics:

  1. AC Generator and DC Motor
  2. Domestic Electric Circuits
  3. Electromagnet
  4. Sources of Energy

Chapter: Sources of Energy

Important Topics:

  1. Characteristics of Fuel
  2. Biomass
  3. Solar Cooker


Chapter: Chemical Reactions and Equations

Important Topics:

  1. Balancing Chemical Equations
  2. Types of Reactions
    1. Decomposition Reaction
    2. Displacement Reaction
    3. Redox Reaction

Chapter: Acids, Bases and Salts

Important Topics:

  1. Acids and Bases Reactions with Metals
  2. Neutralisation Reactions
  3. Chemicals From Common Salt
    1. Bleaching Powder
    2. Washing Soda
    3. Water of Crystallisation


Chapter: Metals and Non-Metals

Important Topics:

  1. The Reactivity Series
  2. Extraction of Metals
  3. Refining of Metals


Chapter: Life Processes

Important Topics:

  1. Photosynthesis
  2. Digestion in Humans
  3. Aerobic and Anaerobic Respiration
  4. Human Heart and Double Circulation
  5. Transport in Plants


Chapter: Control and Coordination

Important Topics:

  1. Human Brain and Its Components
  2. Reflex Action
  3. Human Endocrine System


Finally, do not forget to go through Board Papers of previous years. You can watch the analysis of CBSE Class 10 Science Board Exam 2017 Here. Going through these questions will surely help you boost your confidence as you prepare for your Class 10 Board Exams starting in March.

Previous Year  Papers for CBSE Class 10 Board Exams (2006 – 2017)

Paper Analysis for CBSE Class 10 Board Exams 2016

Paper Analysis for CBSE Class 10 Board Exams 2017

Have you downloaded the CBSE Board Paper Solutions App by Meritnation? It is the smartest way to prepare for Class 10 Board Exams and Class 12 Board Exams. A FREE App with previous Years’ Board Papers, (from 2006 -2017) this App makes preparing for Board Exams easy. Download App

Best Wishes,
Team Meritnation

Add Comment Total Comments (8)

  • 1. Saiansh  |  October 4th, 2019 at 10:22 pm

    Thank you so much a whole team. Very easy answer really help us in understanding the concept.

  • 2. Manish Kumar Yadav  |  February 6th, 2018 at 9:33 am

    It’s very helpful to me

  • 3. Meritnation  |  February 5th, 2018 at 5:53 pm

    Hey, Glad you found this useful. We wish you all the very best!

  • 4. Hermione  |  February 4th, 2018 at 1:26 pm

    Thanks for giving attention to my comment in your previous blog and creating this blog. Really thankful to meritnation team. Keep up your good work.

  • 5. deepak sharut  |  February 3rd, 2018 at 5:45 pm

    and very helpful..

  • 6. Meritnation  |  February 5th, 2018 at 5:58 pm

    Yes! Keep watching this space. All the Best!

  • 7. HK  |  February 3rd, 2018 at 1:23 pm

    Tips for SST please

  • 8. Nitish Kumar Maurya  |  February 3rd, 2018 at 12:26 pm

    I think it will be helpful for me. thanks


Some HTML allowed:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>