This document provides preparation tips for Class 10 Science Board Exam 2021. It outlines the exam pattern, marking scheme, and important topics from each unit. The exam consists of objective and subjective questions worth a total of 100 marks. Chemistry, Physics, and Biology sections contribute 26, 14, and 28 marks respectively. For each subject, conceptual understanding, numerical problem-solving ability, and knowledge of key theorems and topics are emphasized. General tips include thoroughly revising from NCERT textbooks and notes, ensuring all syllabus is covered, staying relaxed during the exam, and managing time effectively.

1. Preparation Tips for Class 10
Science
Board Exam 2021

2. SECTION TYPE OF QUESTION
MARKS PER
QUESTION
TOTAL
QUESTIONS
NO. OF
WORDS FOR
ANSWERING
A
MCQs, very short,
assertion reasoning
type
1 20 1 to 20
1 word or 1
sentence each
B
Short answer type
questions I
2 6 21 to 26
30 to 50
words each
C
Short answer type
questions II
3 7 27 to 33
50 to 80
words each
D
Long answer type
questions
5 3 34 to 36
80 to 120
words each
EXAM PATTERN AND MARKING SCHEME

3. Section A : 32 MARKS
OBJECTIVE TYPE
QUESTIONS
• 13 QUESTIONS
• 1 MARK EACH
• TOTAL 13 MARKS
CCT BASED QUESTIONS
• MCQ BASED
• 4 QUESTIONS
• 4 MARKS EACH
• TOTAL 16 MARKS
ASSERTION REASON
QUESTIONS
• 3 QUESTIONS
• 1 MARKS EACH
• TOTAL 3 MARKS

4. • Unit No. Unit Marks I Chemical Substances-
Nature and Behaviour 26 II World of Living 23
III Natural Phenomena 12 IV Effects of Current
14 V Natural Resources 05 Total 80 Internal
assessment 20 Grand Total 100
UNIT NO. UNIT CHAPTER MARKS
I Chemical Substances-
Nature and Behavior
1.Chemical Reactions and Equations 26
2. Acids, Bases and Salts
3. Metals and Non-Metals
4. Carbon and its Compounds
5. PERIODIC CLASSIFICATION OF
ELEMENTS
II World of Living 6. LIFE PROCESSES 23
7. HOW DO ORGANISMS REPRODUCE
8. HEREDITY
III Natural Phenomena 9. LIGHT-REFLECTION AND REFRACTION 12
10. HUMAN EYE AND COLOURFUL WORLD
IV Effects of Current 11. ELECTRICITY 14
12. MAGNETIC EFFECTS OF ELECTRIC
CURRENT
V Natural Resources 13. OUR ENVIRONMENT 05
Total 80
Internal assessment 20
Grand Total 100

5. INTERNAL ASSESSMENT: 20 MARKS
5 MARKS
• THREE PERIODIC TESTS WERE CONDUCTED BY THE SCHOOL.
• AVERAGE OF BEST TWO IS ADDED TOWARDS THE FINAL RESULT.
5 MARKS
• SHORT TESTS, ORAL TEST, QUIZ, CONCEPT MAPS, PROJECTS, POSTERS, PRESENTATIONS AND
ENQUIRY BASED SCIENTIFIC INVESTIGATIONS/ TESTS ARE CONDUCTED AT SCHOOL.
• WEIGHTAGE OF 05 MARKS TOWARDS THE FINAL RESULT.
5 MARKS
• SUBJECT ENRICHMENT IN THE FORM OF PRACTICAL / LABORATORY WORK.
• STUDENT SHOULD MAINTAIN RECORD OF THE SAME IN PRACTICAL NOTEBOOK.
5 MARKS
• PORTFOLIO TO BE PREPARED BY THE STUDENT.
• CLASSWORK AND OTHER SAMPLE OF STUDENT WORK AND WILL CARRY A WEIGHTAGE OF
5 MARKS TOWARDS THE FINAL RESULTS.

6. THERE IS NO SUBSTITUTION FOR HARDWORK
GO THROUGH THE ENTIRE SCIENCE SYLLABUS
ONCE AGAIN

7. PREPARATION TIPS
CHEMISTRY
EVERY YEAR 2-3 QUESTIONS ARE ASKED FORM SALTS AND ITS COMPOUNDS
STUDENTS MUST KNOW THE COMMON NAMES, PREPARATION, CHEMICAL
FORMULA, AND USES OF SALTS AND ITS COMPOUNDS.
UNDERSTAND THE MODERN PERIODIC TABLE WITH ELECTRONIC CONFIGURATION
AND MEMORIZE ALL THE ELEMENTS PLACED IN THE 1ST AND LAST TWO GROUPS
OF THE PERIODIC TABLE

8. CHEMISTRY
CHAPTER TOPICS
CHEMICAL REACTIONS
IDENTIFICATION OF TYPES OF REACTIONS
AND BALANCING
ACID-BASES AND SALTS
PH, INDICATORS (LITMUS-
PHENOLPHTHALEIN) AND SALTS.
METALS AND NON METALS
REACTIVITY SERIES AND FOMATION OF IONIC
BONDS
CARBON AND ITS COMPOUNDS
PROPERTIES OF CARBON AND HOMOLOGOUS
SERIES
PERIODIC CLASSIFICATION OF
ELEMENTS
ATOMIC NUMBER-MASS, TENDENCY OF
ELEMENTS ACROSS THE TABLE
IMPORTANT TOPICS

9. PREPARATION TIPS
PHYSICS
PRACTICING THE NUMERICAL QUESTIONS AND REVISING THE CONCEPTS IS THE
KEY TO SCORE IN PHYSICS.
PHYSICS HAS SEVERAL QUESTIONS BASED ON THEOREM AND DIRECT FORMULAS
WHICH CAN BE MEMORIZED BY REVISING THOROUGHLY.
YOU MUST GET A GRIP ON THE FUNDAMENTAL CONCEPTS OF THE SUBJECT.

10. – Uses of spherical mirror.
– Dispersion of White light
– Atmospheric refraction
– Scattering of Light
– Factors on which the resistance of a conductor
depends.
– Heating effect of electric current and its applications
in daily life.
– Magnetic field lines and its properties
– Electric Motor
– Electromagnetic induction
IMPORTANT TOPICS
CONCEPTUAL QUESTIONS

11. • On OHM’s Law
• Concept of potential and work done
• Combination of resistance
• Interrelation between P, V, I and R.
• Mirror formula and magnification.
• Lens formula, Magnification and Power of a
lens.
NUMERICAL TOPICS

12. • Laws of refraction of Light – Statement only
• OHM’s Law – statement, relation, V-I graph
and circuit diagram.
• Right – Hand Thumb Rule – Statement only
• Fleming’s Left-Hand Rule – Only statement
• Fleming’s Right-Hand Rule – Only statement
THEOREMS TO BE PREPARED

13. PREPARATION TIPS
BIOLOGY
• Biology section contains 28 marks. In this part two
units are there, one is world of living and another one
is natural resources.
• Unit 1 - World of living has 3 chapters (life processes,
reproduction and heredity). Evolution and control and
coordination is not included that time .
• Unit 2- Natural resources - Our environment: Eco-
system, Environmental problems, Ozone depletion,
waste production and their solutions. Biodegradable
and non-biodegradable substances.

14. IMPORTANT TOPICS
• In biology part diagrams are very important. From life
processes students should focus and do practice for
labelling the parts of heart, kidney, respiration.
• Name of enzymes and functions are important.
• From chapter reproduction flower section is important
and also human reproductive parts.
• Crosses are important from heredity.
• If students read the chapters of NCERT and solve the
related questions then it will be more helpful. Read
simple sentences and clear the concepts first. Don’t be
panic read chapters thoroughly.

15. • Students should revise from their notes that
they have created during preparation.
• Students must not touch any new topic
before the exam day.
• Be relaxed and cool.
• Take proper sleep at night before the exam
day.
• Students should make sure that they have not
skipped any important topic from the syllabus
GENERAL TIPS TO BE FOLLOWED
BEFORE THE EXAM DAY

16. • Keep an eye on the time and try to finish all
the entire paper in the allocated time
duration.
• Draw the diagram wherever required to
explain the answer.
• Do not get stuck to a particular question.
Students must move on if they could not able
to find the answer to a particular question.
TIPS FOR ATTEMPTING SCIENCE QUESTION PAPER