CBSE Class 10th Science Important questions assist students in preparing effectively for their Class 10 board exams. They can easily access and download CBSE Class 10th Science important questions in PDF format.
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CBSE Class 10th Science important questions are crucial for students to improve their understanding. It's especially important for those preparing for the CBSE 10th board exam. This article is designed to help students thoroughly grasp the important questions for CBSE Class 10th Science.
The CBSE 10th board exam board exams include both practical and theory tests. A collection of important questions from all topics has been compiled by analyzing previous year's question papers.
CBSE Class 10th Science Important Questions PDF Files
Classroom sessions generally don't cover every critical question the students must focus on while preparing for board examinations. A comprehensive list of questions would do wonders for the students to score well in the examination. Students can download chapter-wise important questions for CBSE class 10 from the PDF files provided below.
| Chapters | Download |
| Chapter 1: Chemical Reactions and Equation | Click Here |
| Chapter 2: Acid Bases and Salts | Click Here |
| Chapter 3: Metals and Non-metals | Click Here |
| Chapter 4: Carbon and its Compounds | Click Here |
| Chapter 5: Periodic Classification of Elements | Click Here |
| Chapter 6: Life Processes | Click Here |
| Chapter 7: Control and Coordination | Click Here |
| Chapter 8:How do Organisms Reproduce | Click Here |
| Chapter 9: Heredity and Evolution | Click Here |
| Chapter 10: Light Reflection and Refraction | Click Here |
| Chapter 11: Human Eye and Colourful World | Click Here |
| Chapter 12: Electricity | Click Here |
| Chapter 13: Magnetic Effects of Electric Current | Click Here |
| Chapter 14: Sources of Energy | Click Here |
| Chapter 15: Our Environment | Click Here |
| Chapter 16: Management of Natural Resources | Click Here |
Read More: CBSE Additional Practice Papers
CBSE Class 10th Science Syllabus and Marks Distribution
Students must be aware of the marking scheme for all the topics that CBSE decides for the 10th Science Board examination. This will help the students prepare for their examinations effectively.
| Units | Topics | Evaluation Scheme |
| Theory | ||
| Units | Term – I | Marks |
| I | Chemical Substances – Nature and Behaviour: Chapter 1, 2 and 3 | 16 |
| II | World of Living: Chapter 6 | 10 |
| III | Natural Phenomena: Chapter 10 and 11 | 14 |
| Units | Term – II | Marks |
| I | Chemical Substances-Nature and Behaviour: Chapters 4 and 5 | 10 |
| II | World of Living: Chapter 8 and 9 | 13 |
| IV | Effects of the Current: Chapter 12 and 13 | 12 |
| V | Natural Resources: Chapter 15 | 05 |
| Total Theory (Term I+II) | 80 | |
| Internal Assessment: Term I | 10 | |
| Internal Assessment: Term II | 10 | |
| Grand Total | 100 | |
Read More: CBSE Class 10th Blueprint 2023
CBSE Class 10th Science Exam Pattern
Other than Important Questions for CBSE Class 10 Science, it is also important for students to understand that the CBSE Class 10th Science paper is split into three sections A, B, and C, where every section is mandatory for students to attempt. The following table explains the CBSE Class 10th Science exam pattern for the current academic year.
| Section | Total Number of Questions | Type of Questions | Marks Per Question |
| A | 24 (Any 20 questions to be attempted) | MCQ | 0.8 |
| B | 24 (Any 20 questions to be attempted) | MCQ | 0.8 |
| C | 12 (Any 10 questions to be attempted) | MCQ | 0.8 |
Read More: CBSE 10th Date Sheet 2023
Since the students have no overall choice, internal options have been provided within all three sections of the class 10th Science paper. This includes a weightage of 33%. The pattern followed is often seen within the sample papers that CBSE has provided. Students can also refer to the table given below to understand the assessment areas for the theoretical Science board examination.
| Competencies | Percentage |
| Demonstrate knowledge and understanding | 46% |
| Application of knowledge/concepts | 22% |
| Analyze, evaluate and create | 32% |
Read More: CBSE 10th Syllabus 2023
CBSE Class 10th Science Internal Assessment
The table below provides the students with an idea of the breakup of internal assessment for subject enrichment and portfolio and the marks allocation for the same.
| Assessments | Term 1 Marks | Term 2 Marks |
| Periodic Assessment | 03 | 03 |
| Subject Enrichment(Practical Enrichment) | 03 | 03 |
| Multiple Assessments | 02 | 02 |
| Portfolio | 02 | 02 |
Read More: CBSE Grading System
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