Science exam for Class 10 by the CBSE aims at making students aware of all the topics and basic concepts in all three areas namely chemistry, physics and biology and test them on these areas. We all know that Science plays an important role in life and therefore, its study is quite crucial for all of us.
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One needs to focus on all concepts while preparing for Class 10 Science. With some really good study material and complete focus, you can perform very well in your exam.
Here are few tips to guide you in the right direction with the preparation:
1. Make a proper Time-table and start with basics:
The first step in your preparation should be to build a strategy and make schedule and follow it strictly. Give good amount of time to all subjects so that you do not miss out on any topic. Your time is precious, use it judiciously. Make sure to strengthen your basics initially by studying from the NCERT Textbooks. Study additional books only after you know that your basic concepts are clear
Chapter 1 - Chemical Reactions and Equations
Chapter 2 - Acids, Bases and Salts
Chapter 3 - Metals and Non-metals
Chapter 4 - Carbon and its compounds
Chapter 5 - Periodic Classification of Elements
Chapter 6 - Life Processes
Chapter 7 - Control and Coordination
Chapter 8 - How do Organisms Reproduce?
Chapter 9 - Heredity and Evolution
Chapter 10 - Ray Optics - Light : Reflection and Refraction
Chapter 11 - Ray Optics - The Human Eye and Colorful World
Chapter 12 - Electricity
Chapter 13 - Magnetic Effects of Current
Chapter 14 - Sources of Energy
Chapter 15 - Our Environment
Chapter 16 - Management of Natural Resources
2. Learn formulae and Important topics:
All the formula included in the Class 10 science syllabus should be on your tips so that during the exam , you don't have to waste any time remembering them. The exam contains direct formulae and theorem-based questions. Hence, revise them thoroughly to solve questions accurately. Also, do study the important topics mentioned with utmost concentration. After you study a chapter, make a habit of noting down some important points and formulae. This will help in remembering the concepts.
3. Solve Previous Years Papers:
Practice is really important as you will be able to retain various topics in your mind for a long time. Previous Year question papers are a must to solve as they will help you understand the pattern of the exam. Also, you will be able to know your strengths and weaknesses. Time yourself while you attempt them in examination hall conditions. After trying every paper, evaluate yourself. This practice will help you gain self-confidence, which is one of the most important things to have during the exams.
CBSE Class 10 Science Exam Paper Pattern:
In the new scheme of examination, CCE and the term system have been replaced with a single annual exam by CBSE. The exam will be conducted by CBSE for 80 marks, and 20 marks are for internal assessment at school. CBSE has issued detailed guidelines on how the internal marks will be divided among different activities.
Student has to secure
33% marks out of 80
marks in each subject.
Student has to secure 33% marks out of overall 20 marks earmarked in each subject.
Weightage of Chapters for Class 10 Science:
Below is the official blueprint of CBSE Class 10 Science:
Chemical Substances - Nature and Behaviour
World of Living
Effects of Current
Important Topics For class 10 Science:
Chemical Reactions and Equations:
1. Chemical equations (Writing and balancing).
2. Different types of chemical reactions.
Acids, Bases and Salts:
1. Reactions of acids and bases.
2. Reaction of oxides with acids and bases.
3. Different types of salts.
Metals and Non-metals:
1. Chemical properties of metals (special reference to reactions with air and water).
2. Properties of ionic compounds.
3. Extraction of metals based on the activity series.
Carbon and its Compounds:
1. Different allotropes of carbon (only SA questions).
2. Nomenclature of organic compounds.
3. Addition reaction and substitution reaction.
4. Properties of ethanol and ethanoic acid.
5. Formation of soaps and detergents.
Periodic Classification of Elements:
1. Mendeleev’s periodic table.
2. Properties of modern periodic table.
1. Mode of nutrition (with special reference to autotrophic nutrition).
2. Human digestive system.
3. Human respiratory system.
4. Function of human heart.
5. Formation of urine.
Control and Coordination:
1. Reflex action.
2. Function of human brain.
3. Hormones in animals.
How Do Organisms Reproduce?
1. Differences between various modes of asexual reproduction.
2. Double fertilisation.
3. Male reproductive system.
4. Fertilisation in females.
Heredity and Evolution:
1. Mendel’s Laws.
2. Law of independent assortment.
3. Homologous and analogous organs.
4. Evolution of wild cabbage.
Light: Reflection and Refraction:
1. Image formation by spherical mirrors due to reflection.
2. Image formation by spherical lens due to refraction.
3. Sign convention for reflection by spherical mirrors and for refraction by spherical lens.
4. Mirror and lens formula along with magnification for both the cases.
The Human Eye and the Colourful World:
1. The parts and working of a human eye.
2. Power of accommodation for human eye.
3. Defects of human eye along with their corrective measures.
4. Dispersion of white light passing through the triangular prism.
5. Atmospheric refraction and scattering.
6. Tyndall effect.
1. Ohm’s law.
2. Resistance, factors on which it depends, resistivity.
3. Effective resistance of the resistors connected in series and parallel combination.
4. Joule’s law of heating and electric power.
Magnetic Effects of Electric Current:
1. Magnetic field due to various current carrying conductors.
2. Right hand thumb rule and left hand rule.
3. Magnetic force due to current-carrying conductors and electric motor.
4. Electromagnetic induction and electric generator.
5. Domestic electric circuits.
Sources of Energy:
1.Conventional and non-conventional sources of energy.
1. Significance of food chain and food web.
2. Energy flow (10%).
Management of Natural Resources:
1. 3Rs to save the environment.
2. Different stakeholders.
3. Method of water harvesting.
Preparation tips for Physics, Chemistry and Maths:
Understand the sign conventions and rules for drawing ray diagrams.
Note down the important formulae and equations.
Practice the numerical questions and revise the concepts on a regular basis.
Speed with accuracy in solving problems can only be acquired through in-depth study of the subject and extensive practice.
Practice the balancing of chemical equations.
Questions on modern periodic table and reactivity series cannot be missed. So study the Periodic Classification chapter really well.
Study the preparation of different types of salts.
pH-related questions may be optional based.
Questions on alloys and corrosion will be part of practical based questions.
Practice the diagrams (to name a few: asexual reproduction, male and female reproductive systems, human heart, human excretory system, double circulation).
Solve the Mendel’s heredity crosses with stress on the laws of Mendel (3 marks).
Remember the concepts on ‘Food Chain’, ‘Significance of Food Chain’, ‘10% Law’, ‘Evolution of Cabbage’, ‘Water Harvesting Technique’ and ‘Different stakeholders’.
Long answer questions on ‘Life Processes’ (any human system should not be missed out).
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