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CBSE Class 10 Science: Important Tips and Topics for SA2
Meritnation|Feb 4th, 2016 03:58pm
SA2 or the Summative Assessment II is just around the corner and all Class 10 students must have ideally created a revision timetable and begun their revisions. If you haven’t yet done so, then we recommend you do this now. This is a good approach rather than leaving things to the last days of their preparation. It is most important to prioritize what topics are important in Class 10 CBSE Science and create your timetable accordingly.
Science is a subject that needs to be studied with a structure because a lot of the concepts are interconnected. To score more and to be prepared to tackle all the tough questions in the subject, pay attention to the list of important chapters below:
MUST READ FOR CBSE CLASS 10 > Important Topics & Tips for: MATHS | SOCIAL SCIENCE | ENGLISH
Chapter 8 – 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.
| MERITNATION TIPS: 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. |
RECOMMENDED RESOURCES: Revision Notes | Sample Papers | Textbook Solutions | Ask & Answer
Chapter 9 – 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.
| MERITNATION TIPS: 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 15 – 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.
| MERITNATION TIPS: 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 16 – 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.
| MERITNATION TIPS: 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 4 – 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.
| MERITNATION TIPS: 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. |
RECOMMENDED RESOURCES: Revision Notes | Sample Papers | Textbook Solutions | Ask & Answer
Chapter 5 – 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.
| MERITNATION TIPS: 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 10 – 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.
| MERITNATION TIPS: 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 11 – 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.
| MERITNATION TIPS: 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. |
All the best with your SA2 revisions and exams!
Please take a moment to spread these tips with your friends. After all, Knowledge is the only thing that grows when shared! 🙂
Add Comment Total Comments (7)
1. Sonali | February 25th, 2017 at 12:51 pm
it was really helpful !!
thank you meritnation !!
2. Nived | March 5th, 2016 at 11:52 pm
really helpfulllll……
3. kalpana | February 29th, 2016 at 4:33 pm
thank u @m’nation…..
4. sachinyadav | February 29th, 2016 at 3:38 pm
most thank you bro
5. chanchal pandey | February 25th, 2016 at 5:34 pm
thanx meritnation
6. Kokila kannan | February 23rd, 2016 at 9:28 am
Thank u lodzzz!! U r creating a strong confidence to face each topics!!
thank you a lodzz!!
7. Darshan | February 10th, 2016 at 6:31 pm
Thank u meritnation for taking step for us.Really proud of you.I suggest mu friends and relatives to prefer Meritnation instead of other websites
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