Science (Volume 2) | Grade 10
Competency Focused Practice Questions | Science | Grade 10
, PREFACE
Assessments are an important tool that help gauge learning. They provide valuable feedback about
the effectiveness of instructional methods; about what students have actually understood and also
provide actionable insights. The National Education Policy, 2020 has outlined the importance of
competency‐based assessments in classrooms as a means to reform curriculum and pedagogical
methodologies. The policy emphasizes on the development of higher order skills such as analysis,
critical thinking and problem solving through classroom instructions and aligned assessments.
Central Board of Secondary Education (CBSE) has been collaborating with Educational Initiatives (Ei)
in the area of assessment. Through resources like the Essential Concepts document and A‐ Question‐
A‐Day (AQAD), high quality questions and concepts critical to learning have been shared with schools
and teachers.
Continuing with the vision to ensure that every student is learning with understanding, Question
Booklets have been created for subjects for Grade 10th and 12th. These booklets contain
competency‐based items, designed specifically to test conceptual understanding and application of
concepts.
Process of creating competency‐based items
All items in these booklets are aligned to the NCERT curriculum and have been created keeping in
mind the learning outcomes that are important for students to understand and master. Items are a
mix of Free Response Questions (FRQs) and Multiple‐Choice Questions (MCQs). In case of MCQs, the
options (correct answer and distractors) are specifically created to test for understanding and
capturing specific errors/misconceptions that students may harbour. Each incorrect option can
thereby inform teachers on specific gaps that may exist in student learning. In case of subjective
questions, each question also has a detailed scoring rubric to guide evaluation of students’
responses.
Each item has been reviewed by experts, to check for appropriateness of the item, validity of the
item, conceptual correctness, language accuracy and other nuances.
How can these item booklets be used?
There are 187 questions in this booklet.
The purpose of these item booklets is to provide samples of high‐quality competency‐based items to
teachers. The items can be used to–
● get an understanding of what good competency‐based questions could look like
● give exposure to students to competency‐based items
● assist in classroom teaching and learning
● get inspiration to create more such competency‐based items
Students can also use this document to understand different kinds of questions and practice specific
concepts and competencies. There will be further additions in the future to provide competency
focused questions on all chapters.
The item booklets are aligned with the 2022‐23 curriculum. However, a few questions from topic
which got rationalized in 2023‐24 syllabus are also there in the booklet which may be used as a
reference for teachers and students.
Please write back to us to give your feedback.
Team CBSE
Competency Focused Practice Questions | Science | Grade 10
, CONTENTS
1. ACIDS, BASES AND SALTS ................................................................................................... 1
Answer Key & Marking Scheme.......................................................................................... 4
2. CARBON COMPOUNDS ...................................................................................................... 6
Answer Key & Marking Scheme.......................................................................................... 7
3. CHEMICAL REACTIONS ....................................................................................................... 8
Answer Key & Marking Scheme.......................................................................................... 9
4. CONTROL AND COORDINATION ....................................................................................... 10
Answer Key & Marking Scheme........................................................................................ 10
5. ELECTRICITY ..................................................................................................................... 11
Answer Key & Marking Scheme........................................................................................ 15
6. HEREDITY AND EVOLUTION.............................................................................................. 16
Answer Key & Marking Scheme........................................................................................ 18
7. HUMAN EYE AND COLOURFUL WORLD ............................................................................ 19
Answer Key & Marking Scheme........................................................................................ 20
8. LIFE PROCESSES ............................................................................................................... 21
Answer Key & Marking Scheme........................................................................................ 23
9. METALS AND NON-METALS ............................................................................................. 24
Answer Key & Marking Scheme........................................................................................ 25
10. OUR ENVIRONMENT ........................................................................................................ 26
Answer Key & Marking Scheme........................................................................................ 26
11. PERIODIC CLASSIFICATION ............................................................................................... 27
Answer Key & Marking Scheme........................................................................................ 27
12. REFLECTION AND REFRACTION ........................................................................................ 28
Answer Key & Marking ..................................................................................................... 28
13. REPRODUCTION ............................................................................................................... 29
Answer Key & Marking Scheme........................................................................................ 31
14. SOURCES OF ENERGY ....................................................................................................... 32
Answer Key & Marking Scheme........................................................................................ 34
15. CHEMICAL SUBSTANCES- NATURE AND BEHAVIOUR ........................................................ 35
Answer Key and Marking Scheme .................................................................................... 42
16. WORLD OF LIVING............................................................................................................ 45
Answer Key and Marking Scheme .................................................................................... 63
17. NATURAL PHENOMENA ................................................................................................... 74
Competency Focused Practice Questions | Science | Grade 10
, Answer Key and Marking Scheme .................................................................................... 78
18. EFFECTS OF CURRENT ...................................................................................................... 81
Answer Key and Marking Scheme .................................................................................... 84
19. NATURAL RESOURCES ...................................................................................................... 85
Answer Key and Marking Scheme .................................................................................... 95
Competency Focused Practice Questions | Science | Grade 10
Competency Focused Practice Questions | Science | Grade 10
, PREFACE
Assessments are an important tool that help gauge learning. They provide valuable feedback about
the effectiveness of instructional methods; about what students have actually understood and also
provide actionable insights. The National Education Policy, 2020 has outlined the importance of
competency‐based assessments in classrooms as a means to reform curriculum and pedagogical
methodologies. The policy emphasizes on the development of higher order skills such as analysis,
critical thinking and problem solving through classroom instructions and aligned assessments.
Central Board of Secondary Education (CBSE) has been collaborating with Educational Initiatives (Ei)
in the area of assessment. Through resources like the Essential Concepts document and A‐ Question‐
A‐Day (AQAD), high quality questions and concepts critical to learning have been shared with schools
and teachers.
Continuing with the vision to ensure that every student is learning with understanding, Question
Booklets have been created for subjects for Grade 10th and 12th. These booklets contain
competency‐based items, designed specifically to test conceptual understanding and application of
concepts.
Process of creating competency‐based items
All items in these booklets are aligned to the NCERT curriculum and have been created keeping in
mind the learning outcomes that are important for students to understand and master. Items are a
mix of Free Response Questions (FRQs) and Multiple‐Choice Questions (MCQs). In case of MCQs, the
options (correct answer and distractors) are specifically created to test for understanding and
capturing specific errors/misconceptions that students may harbour. Each incorrect option can
thereby inform teachers on specific gaps that may exist in student learning. In case of subjective
questions, each question also has a detailed scoring rubric to guide evaluation of students’
responses.
Each item has been reviewed by experts, to check for appropriateness of the item, validity of the
item, conceptual correctness, language accuracy and other nuances.
How can these item booklets be used?
There are 187 questions in this booklet.
The purpose of these item booklets is to provide samples of high‐quality competency‐based items to
teachers. The items can be used to–
● get an understanding of what good competency‐based questions could look like
● give exposure to students to competency‐based items
● assist in classroom teaching and learning
● get inspiration to create more such competency‐based items
Students can also use this document to understand different kinds of questions and practice specific
concepts and competencies. There will be further additions in the future to provide competency
focused questions on all chapters.
The item booklets are aligned with the 2022‐23 curriculum. However, a few questions from topic
which got rationalized in 2023‐24 syllabus are also there in the booklet which may be used as a
reference for teachers and students.
Please write back to us to give your feedback.
Team CBSE
Competency Focused Practice Questions | Science | Grade 10
, CONTENTS
1. ACIDS, BASES AND SALTS ................................................................................................... 1
Answer Key & Marking Scheme.......................................................................................... 4
2. CARBON COMPOUNDS ...................................................................................................... 6
Answer Key & Marking Scheme.......................................................................................... 7
3. CHEMICAL REACTIONS ....................................................................................................... 8
Answer Key & Marking Scheme.......................................................................................... 9
4. CONTROL AND COORDINATION ....................................................................................... 10
Answer Key & Marking Scheme........................................................................................ 10
5. ELECTRICITY ..................................................................................................................... 11
Answer Key & Marking Scheme........................................................................................ 15
6. HEREDITY AND EVOLUTION.............................................................................................. 16
Answer Key & Marking Scheme........................................................................................ 18
7. HUMAN EYE AND COLOURFUL WORLD ............................................................................ 19
Answer Key & Marking Scheme........................................................................................ 20
8. LIFE PROCESSES ............................................................................................................... 21
Answer Key & Marking Scheme........................................................................................ 23
9. METALS AND NON-METALS ............................................................................................. 24
Answer Key & Marking Scheme........................................................................................ 25
10. OUR ENVIRONMENT ........................................................................................................ 26
Answer Key & Marking Scheme........................................................................................ 26
11. PERIODIC CLASSIFICATION ............................................................................................... 27
Answer Key & Marking Scheme........................................................................................ 27
12. REFLECTION AND REFRACTION ........................................................................................ 28
Answer Key & Marking ..................................................................................................... 28
13. REPRODUCTION ............................................................................................................... 29
Answer Key & Marking Scheme........................................................................................ 31
14. SOURCES OF ENERGY ....................................................................................................... 32
Answer Key & Marking Scheme........................................................................................ 34
15. CHEMICAL SUBSTANCES- NATURE AND BEHAVIOUR ........................................................ 35
Answer Key and Marking Scheme .................................................................................... 42
16. WORLD OF LIVING............................................................................................................ 45
Answer Key and Marking Scheme .................................................................................... 63
17. NATURAL PHENOMENA ................................................................................................... 74
Competency Focused Practice Questions | Science | Grade 10
, Answer Key and Marking Scheme .................................................................................... 78
18. EFFECTS OF CURRENT ...................................................................................................... 81
Answer Key and Marking Scheme .................................................................................... 84
19. NATURAL RESOURCES ...................................................................................................... 85
Answer Key and Marking Scheme .................................................................................... 95
Competency Focused Practice Questions | Science | Grade 10
