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Most Important Chapters of CBSE Class 10 Science 2021

05 Jan, 2021, By Tanvi Sharma

It is important for the student to score well in the class 10 exam. In order to get the stream of the choice, the student needs to prepare in the best way for class 10 exams.

Every year lakhs of students seat for class 10 board exams. the students who are able to score well in this class attain much-required confidence to perform well in the secondary level exam. If you are also appearing for class 10 board exams then you need to be aware of the important chapter of maths class 10 & important chapters of science class 10.

Important Chapters of CBSE Class 10.

The students often face difficulty in scoring in science and math. The syllabus of these subjects is vast and also these subjects are a little difficult as compared to the other subjects. The students should be aware of the most important chapter in maths class 10 & the most important chapter of science class 10 so that they can draft a perfect timetable accordingly.


List of Most Important Chapters and Topics of CBSE Class 10 Board Exam 2021 with Weightage

Here Students find the Important list of CBSE Class 10 Board Exam Sciences and Maths with Weightage. Students need to go through the below table.

Important Chapter for CBSE Class 10 Maths

Math is a scary subject for many students; you need to invest a lot of time practising this subject if you are willing to score well. Here we have for you the list of topics that are included in the class 10 maths syllabus.

Chapter  Topic Name Marks
Chapter 3 Linear Equations 8 Marks
Chapter 5 Arithmetic Progression 5 Marks
Chapter 6 Triangles 9 Marks
Chapter 7 Coordinate Geometry 6 Marks
Chapter 8 Introduction to Trigonometry 6 Marks
Chapter 9 Applications of Trigonometry 6 Marks
Chapter 13 Surface Areas & Volumes 7 Marks
Chapter 14 Statistics 8 Marks

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Important Chapter for CBSE Class 10 Science

Science is an interesting subject. The science paper of class 10 consists of three divisions: Physics, chemistry, and biology. You need to be focused when you sit to study this subject. There’s nothing like cramming, all that you need to do is, you need to be very attentive towards the topic you are studying. You can also maintain a formula book to learn the formulas easily.

Unit Names Marks
1 Chemical Substances 25
2 World of Living 23
3 Natural Phenomena 12
4 Effects of Current 13
5 Natural Resources 07
Total 80
Internal Marks 20
Total 100


CBSE Class 10 Science Marking Scheme 2021

Here is a table that will help you in understanding the marking scheme of the science paper. The science paper consists of MCQs, short answer type questions, long answer type questions.

Section Questions Types Total No. of Questions Marks per Question
A (MCQs), Multiple Choice Questions
and Short Answer Questions
20 1
B Short Answer Type Questions I 06 2
C Short Answer Type Questions II 07 3
D Long Answer Type Questions II 03 5
  Total 36  

The student should focus on practising the important questions as:

  • You will be able to know about the difficulty level and the types of questions
  • This is one of the best ways to revise
  • You will get to know what questions will consume more of your time on the exam day
  • You will be able to judge easily which questions you will be attempting in the paper
  • Students can download the Previous Year Question paper and practise them for better exam preparation and also join the Sample Question Paper with Solutions available here. 

Hope the above-provided information will be helpful for you. Study hard and score well.