Working hard is the key to success or to achieve your goal. Stay focused!! Feel relaxed while preparing for any exam, don’t pressurize yourself.
The most important thing that is needed for the board preparation is regular practice.
Success in the Class 10 Board Exams is an important milestone in a student's life, and science is a stepping stone for a career in medicine and engineering.
Physics, Chemistry and Biology are the subjects which constitute the Science Exam.
CBSE 10th Board Science Exam weightage will be as follows:
| Unit |
Title |
Weightage |
| I |
Chemical Substances-Nature and Behaviour |
25 |
| II |
World of Living |
23 |
| III |
Natural Phenomena |
12 |
| IV |
Effects of Current |
13 |
| V |
Natural Resources |
07 |
| |
Total Marks |
80 |
| |
Internal Assessment |
20 |
| |
Grand Total |
100 |
CBSE Class 10th Board Exam Paper Pattern according to sample paper provided by CBSE:
| Section |
Total Questions |
Marks |
| A |
14* |
20 |
| B |
10 |
30 |
| C |
6 |
30 |
| Total |
30 |
80 |
Note :
1. Section A consist of total 14 questions in which 2 questions are divided into 4 parts each.
2. Percentage of total internal choice provided by CBSE in sample paper is 30%.
CBSE 10th Board Science Exam General Instructions:
• The question paper comprises three sections – A, B and C. Attempt all the sections.
• All questions are compulsory.
• Internal choice is given in each section.
• All questions in Section A are one-mark questions comprising MCQ, VSA type and assertion-reason type questions. They are to be answered in one word or in one sentence.
• All questions in Section B are three-mark, short-answer type questions. These are to be answered in about 50 – 60 words each.
• All questions in Section C are five-mark, long-answer type questions. These are to be answered in about 80 – 90 words each.
• This question paper consists of a total of 30 questions.
CBSE Class 10th Board Exam 2020 Internal Assessment will be conducted through different activities as mentioned below:
| Periodic Assessment (5+5) |
10 Marks |
| Subject Enrichment (Practical Work) |
5 Marks |
| Portfolio |
5 Marks |
Here are some CBSE Class 10 Preparation Tips subject-wise by the Experts.
Subject Chemistry
Central Board of Secondary Education (CBSE) has released the sample papers and marking scheme. Accordingly the weightage of chapters will be as follows:
| Chapter Number |
Chapter Name |
Marks |
| 1 |
Chemical reaction and equation |
4 |
| 2 |
Acids bases and salts |
4 |
| 3 |
metals and non-metals |
5 |
| 4 |
Carbon and its compounds |
7 |
| 5 |
Periodic classification of elements |
5 |
CBSE Class 10th Board Exam Chemistry Paper Pattern according to sample paper provided by CBSE:
| Question Type |
Marks |
No of Questions |
Total |
| Very Short Answer |
1 |
2 |
2 |
| MCQ |
1 |
3 |
3 |
| Assertion Reason |
1 |
1 |
1 |
| Short Answer |
3 |
3 |
9 |
| Long Answer |
5 |
2 |
10 |
| Total |
|
11 |
25 |
CBSE Class 10th Board Exam Important Topics with example.
NCERT Class 10 Science Chapter 1 : Chemical Reaction and Equation
Balanced equation and type of equation may ask for a particular statement of chemical process.
Example: 1. A salt of Lead 'X' give brown fumes and oxygen gas on decomposition.
• Name the substance ‘X’ and write its formula.
• Write the balanced equation of above process.
Example: 2. Write the balanced equation and type of reaction for the following process
"Hydrogen reacts with chlorine to form hydrogen chloride"
NCERT Class 10 Science Chapter 2 : Acids bases and salts
Type of salts, pH, indicator, chemical properties of acids and bases, commercially important compounds & their preparations.
NCERT Class 10 Science Chapter 3 : Metals and Non-metals
Properties of ionic compounds and their formula, structure, questions based on reactivity of metals, metallurgical steps for a particular type of metal, Alloy.
Example:
• Name the metal which is low in activity series and exists as liquid at room temperature.
• Write the name and formula of its ore.
• How is the metal extracted from this ore ?
• Write the chemical equation for the reaction involved.
NCERT Class 10 Science Chapter 4 : Carbon and its compounds
Electron dot structure, properties of covalent compounds, chemical properties of carbon compounds, Homologous series, Soap and Detergent.
Example:
A carbon compound ‘P’ on heating with excess conc H2SO4 forms another carbon compound ‘Q’ which on addition of hydrogen in the presence of nickel catalyst forms a saturated carbon compound.
‘R’ One molecule of ‘R’ on combustion forms two molecules of carbon dioxide and three molecule of water.
Identify P, Q and R and write chemical equations for the reactions involved and also draw the electron dot structure of compound P.
NCERT Class 10 Science Chapter 5 : Periodic classification of elements
Mendeleev's periodic table, Modern
Periodic table, various periodic trends
CBSE Class 10 Board Exam Revision tips
• Make your own notes.
• Give mock test to know the pattern and marking scheme.
• Self-assessment by practice.
• Make charts of formula along with names and revise them.
• Learn formula of chemical compound along with their common name
Subject Biology:
Central Board of Secondary Education (CBSE) has released the sample papers and marking scheme. The weightage of chapters will be as follows:
| Chapter No |
Chapter Name |
Marks Distribution |
| 6 |
Life Processes |
8 |
| 7 |
Control and Coordination |
7 |
| 8 |
How Do Organisms Reproduce |
5 |
| 9 |
Heredity and Evolution |
3 |
| 15 |
Our Environment |
3 |
| 16 |
Management of Natural Resources |
2 |
CBSE Class 10th Board Exam Biology Paper Pattern according to sample paper provided by CBSE:
| Question Type |
Marks |
No of Questions |
Total |
| Very Short Answer |
1 |
4 |
4 |
| MCQ |
1 |
2 |
2 |
| Short Answer |
3 |
4 |
12 |
| Long Answer |
5 |
2 |
10 |
| Total |
|
12 |
28 |
Here, students are also advised to practice the below Diagrams:
• Neurons or the nerve cells.
• Brain.
• Reflex Arc.
• Human Excretory System/Human Urinary System.
• Human Digestive system.
• Internal Structure of Heart.
• Human Respiratory System.
• Nutrition in Amoeba.
• Human Male Reproductive System
• Human Female Reproductive System
• Binary fission in leishmania
• Budding in Yeast and Hydra
• Regeneration in Planaria and Hydra
• Longitudinal Section (L.S.) of A Flower
• Germination of Pollen on Stigma (Fertilization in flowering plants)
• Seed Germination
The Experts have shared last year analysis so that students can prepare or revise the syllabus.
NCERT Class 10 Science Chapter : 6 – Life Processes
In previous years, questions of 1, 2, 3 as well as 5 marks have been asked from this chapter. We can also conclude that mostly 2 questions will be asked from this chapter. We suggest that you read this chapter from NCERT thoroughly, as it has some small details which can be asked, like names and functions of enzymes, products formed during a particular reaction, etc.
Also do remember to practice drawing every diagram at least once, as they have been asked in previous exams.
The concepts to be revised for life processes are:
1. Nutrition
o In autotrophs
o In heterotrophs
2. In amoeba
3. In humans
4. Respiration
o Aerobic and anaerobic
o In humans
3. Transportation
o In humans
o In plants
4. Excretion
o In Humans
o In plants
NCERT Class 10 Science Chapter : 7 – Control and Coordination
In previous years, questions of 1, 2, 3 as well as 5 marks have been asked from this chapter. Thus, to score full marks in this chapter, we suggest that you read this chapter from NCERT thoroughly, as it has some small details which can be asked, like names and functions of hormones, etc.
Do remember to practice drawing every diagram at least once. However, they have been asked in previous exams.
The concepts to be revised for Control and Coordination are:
1. Structure and functioning of a neuron
2. Reflex arc
3. Human brain
4. Chemical coordination in plants
5. Chemical coordination in humans
NCERT Class 10 Science Chapter : 8 – How Do Organisms Reproduce
In previous years, questions of 1, 2, 3 as well as 5 marks have been asked from this chapter.
Make sure that you read this from NCERT to score well in 1 and 2 mark questions and practice drawing diagrams.
1. Modes of asexual reproduction
1. Fission
2. Fragmentation
3. Regeneration
4. Budding
5. Vegetative propagation
6. Spore formation
2. Sexual reproduction in flowering plants
3. Sexual reproduction in Human Beings
• Male reproductive system
o Female reproductive system
o Menstruation
o Reproductive Health
NCERT Class 10 Science Chapter : 9 – Heredity and Evolution
In previous years, questions of 2, 3 and 5 marks have been asked from this chapter. Similarly, the concept that is asked repeatedly is Mendel’s pea experiment, so make sure you study this thoroughly.
The concepts to be revised for Heredity and Evolution are:
1. Mendel’s experiment
2. Sex determination
3. Acquired and Inherited traits
4. Homologous and Analogous organs
5. Fossils
6. Evolution by stages, Artificial Selection
7. Human evolution
8. Speciation
NCERT Class 10 Science Chapter : 15 – Our Environment
Mostly, questions of 1 or 3 marks are asked from this chapter.
1. Ecosystem
2. Producers, consumers and decomposers
3. Food chain
4. Food web
5. Biological magnification
6. Ozone layer and its depletion
NCERT Class 10 Science Chapter: 16 – Management of Natural Resources
Questions of 2 and 3 marks have a higher probability of being asked from this chapter.
The concepts to be revised from chapter Our Environment are:
1. Why we need to save resources
2. The three R’s to save our environment
(Refuse, Reduce, Reuse, Repurpose, Recycle)
1. Stakeholders
2. Chipko movement
3. Sustainable management
4. Dams – advantages and disadvantages
5. Water harvesting
6. Coal and Petroleum
General instructions for diagrams
• Make the diagram neat and clean with pencil
• Label it properly
CBSE Class 10 Board Exam Revision tips
• Read NCERT
• Solve last years questions
• Make your own notes.
• Practice diagrams.
• Self-assessment by practice.
• Practice Mendel’s Experiments, Genetic crosses.
• Learn terminologies
Subject Physics :
CBSE Class 10th Board Exam Physics Paper Pattern according to sample paper provided by CBSE :
| Question Type |
Marks |
No of Questions |
Total |
| Very Short Answer |
1 |
4 |
4 |
| MCQ |
1 |
2 |
2 |
| Short Answer |
3 |
4 |
12 |
| Long Answer |
5 |
2 |
10 |
| Total |
|
12 |
28 |
CBSE Class 10th Board Exam Physics Important Topics
NCERT Class 10 Science Chapter 10 – Light : Reflection & Refraction: Laws of reflection and refraction, Refraction through glass slab and prism, ray diagram an numerical based on mirror and lens formula, magnifications & power of lens.
NCERT Class 10 Science Chapter 11 – Human Eye & Colourful World: Human eye and defects of vision, application of refractions, atmospheric refractions and scattering, refractions of light through prism.
NCERT Class 10 Science Chapter 12 – Electricity: Learn Definition and Practice numerical based on Potential, Ohms Law & its verification, Series – Parallel combination of resistance, definition of electric power and energy.
NCERT Class 10 Science Chapter 13 – Magnetic Effect of Electric Current: Right hand thumb rule, Flemings Left hand Rule, Activity of Magnetic field due current carrying wire, circular loop and force on current carrying wire, generator and motor.
NCERT Class 10 Science Chapter 14 – Sources of energy: difference b/w renewable and non-renewable source, solar energy, biogas plant, difference b/w nuclear fission and fusion.
How to solve numerical?
(1) Write all given data
(2) Write the formula
(3) Put the values in above formula
(4) Find the correct answer with unit
How to draw Ray Diagram?
Some points need to be considered
1. Mark Pole exactly at the center of the mirror surface.
2. Mark focus exactly between Pole and center of curvature
3. Mark the arrows correctly on each ray.
4. Draw diagram neat and clean
General instructions for figures
• Make the diagram neat and clean with pencil
• Label it properly
• Diagram should be proper proportions
How to attempt theory Questions?
1. Read the question carefully
2. Answer should be within the proper limit
3. Answer should be to the points specially in long answer type questions with space between every 2 points
CBSE Class 10 Board Exam Revision tips
• Solve NCERT
• Make your own notes.
• Give mock test to know the pattern and marking scheme.
• Self-assessment by practice.
All the best to all Class 10th students.. Write your exams well & be confident…. BEST OF LUCK!!
HAPPY LEARNING!!
