Uttarakhand Board Class 10 Science Syllabus
Uttarakhand Board Class 10 Science Syllabus

Uttarakhand Board of School Education (UKBSE) has been regularly updating the syllabus of all the subjects in Class 10 as it is considered a crucial phase in a student’s academic career. Sincere and dedicated studies help students to prepare well for the Class 10 Board examinations.

Considering this factor, we are providing a detailed summary of Uttarakhand Board of School Education Class 10 Science Syllabus in this article.


A comprehensive understanding of the syllabus will surely help students to come up with an effective time-table for the exam and cover all the chapters within a reasonable amount of time. Furthermore, it is important to revise the chapters multiple times before exam to score good marks.


UKBSE has distributed the Science subject into two papers. One is a theoretical paper, while the other is a practical paper.


Paper – I is a theory paper carrying a total of 80 marks with a 3-hour time limit.


Paper – II is a sessional test/assessment worth 20 marks.



Theory Syllabus of Uttarakhand Board Class 10 Science


The following is the unit-wise and chapter-wise syllabus of UKBSE Class 10 Science (along with marks-distribution) which includes several topics that help form a strong foundation for the next class and further higher studies:


Unit Name


Unit 1: Chemical Compounds


Unit 2: The Living World


Unit 3: How things work


Unit 4: Natural Phenomena


Unit 5: Natural Resource









Chemical Substances

Acids, Bases and Salts

18 Marks

Chemical Reactions

Metals and Non-Metals

Carbon Compounds

Periodic Classification of Elements


World of living

Life Processes

16 Marks

Control and Coordination in Animals and Plants


Heredity and Evolution


Effects of Current

Electric Current

10 Marks




Reflection and Refraction


8 Marks

Natural Resources

Conservation of Natural Resources

8 Marks

The Regional Environment

Sources of energy

Our Environment



The difficulty level and the amount of time required to cover each unit and the respective chapter varies. Therefore, students must try to revise their basics well before going ahead with the new chapters while studying for the exam.

The next step would be to prioritize the chapters according to their weightage of marks. Each unit in the Uttarakhand Board Class 10 Science Syllabus 2021 has been assigned with appropriate marks.


UKBSE Class 10 Science Practical/Sessional Exam


The assignment or the project work performed for the internal assessment is evaluated by an internal subject teacher and an external examiner. Both the internal and the external examiner give marks to the students.



List of Experiments


1. Find the pH of the following samples by using pH paper/universal indicator:

i) Dilute Hydrochloric acid.

ii) Dilute NaOH solution.

iii) Dilute Ethanoic acid solution.

iv) Lemon juice

v) Water

vi) Dilute Sodium Bicarbonate Solution.




2. Determine the focal length of a concave mirror and a convex lens by obtaining the image of a distant object.



3. Study the properties of acids and bases HCl & NaOH by their reaction with:

i) Litmus solution (Blue/Red)

ii) Zinc metal

iii) Solid Sodium Carbonate



4. To study the dependence of current (I) on the potential difference (V) across a resistor and determine its resistance. Also, plot a graph between V and I.



5. Trace the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measure the angle of incidence, angle of refraction, angle of emergence and interpret the result.



6. To determine the equivalent resistance of two resistors when connected in parallel.



7. Determine the equivalent resistance of two resistors when connected in series.



8. To show experimentally that light is necessary for photosynthesis.


9. Show experimentally that carbon dioxide is given out during respiration



10. To prepare a temporary mount of a leaf peel to show stomata.



11. To study (a) binary fission in Amoeba and (b) budding in yeast with the help of prepared slides.



12. Perform and observe the following reactions and classify them into Combination Reaction, Decomposition Reaction, Displacement Reaction, and Double Displacement Reaction:

1. Action of water on quick lime

2. Action of heat on Ferrous Sulphate crystals

3. Iron Nails kept in copper sulphate solution

4. Reaction between Sodium sulphate and Barium chloride solutions



13. To determine the percentage of water absorbed by raisins.



14. Study the following properties of acetic acid (ethanoic acid):

i) odour

ii) solubility in water

iii) effect on litmus

iv) reaction with sodium bicarbonate



15. a) To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions:

i) ZnSO4 (aq.)

ii) FeSO4 (aq.)

iii) CuSO4 (aq.)

iv) Al2 (SO4)3 (aq.)


b) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the above result





Frequently Asked Questions for UKBSE Class 10 Science:


Q1. How are the marks for the UKBSE Class 10 Science divided?


Ans: The total marks allotted for the UKBSE class 10 science are 100 marks. These marks are divided between theory paper (80 marks) and sessional exam (20 marks).


Q2. Which unit has the highest weightage for the class 10 science syllabus?

Ans: For the Uttarakhand Board class 10 science syllabus, the units with the highest weightage are Human bodies and Activities, Substances and reactions, and Physical Events.


Q3. When will the practical exams be held?

Ans: The dates for internal assessment exams/practical exams will be declared by your school authorities. Students are advised to contact their school exam department for further information.



Q4. Will the syllabus be reduced for the academic session 2021-22 as well?

Ans: Keeping in mind the Covid-19 restrictions, the UKBSE had reduced the syllabus for all the subjects for the academic year 2020-21 for the convenience of students. However, no such announcement has been made for the academic session 2021-22. Students are advised to keep visiting the official website of the UKBSE – https://ubse.uk.gov.in/ to stay updated.


Q5. Why is it critical to know the exam’s syllabus ahead of time?


Ans. Knowing the syllabus ahead of time allows students to have a better understanding of the topics, leading to confidence during the exam. It also helps students to improve their time management skills.


We hope that this article about UKBSE Class 10 Science Syllabus has been beneficial to students in planning their studies. Being well-versed with the syllabus will also assist them in making an effective study plan for the exam.