HPBOSE 12th Exam Pattern 2025 for Science

The syllabus of all the core subjects of Science stream is extensive. Hence, the students preparing for HPBOSE Class 12 board exam should focus on covering all the topics to score well. Check here the complete exam pattern of HPBOSE 12th Science stream. 

The Himachal Pradesh Board of Secondary Education (HPBOSE) is a state-level board of education that prescribes course curriculum, syllabus, and textbooks for school education in the state of Himachal Pradesh. HPBOSE conducts Class 12 board exams for Science and other major streams. The core subjects of HPBOSE 12th Science stream are Physics, Chemistry and Biology.

The syllabus of all the core subjects of Science stream is extensive. Hence, the students preparing for HPBOSE Class 12 board exam should focus on covering all the topics to score well. The students must know the pattern of the examination completely to formulate an organised study plan. The exam pattern includes subject-wise/ topic-wise marks distribution, duration of the exam, and so on. This article discusses the exam pattern of HPBOSE 12th Science stream.

HPBOSE Class 12 Science Exam Pattern 2025 and Scheme of Examination

The students should know the weightage of every topic in the HPBOSE 12^th syllabus 2025 for the preparation of board examination. According to the HPBOSE 12^th exam pattern, the duration of the HPBOSE Class 12 board examination is three hours. The subject-wise marks distribution for HPBOSE Class 12 Science stream is given below.

HPBOSE 12^th Chemistry Marking Scheme

According to the HPBOSE 12th exam pattern, the total marks allocated for Chemistry examination are 100 — 60 marks for the theory paper, 25 marks for the practical assessment, and 15 marks for the internal assessment.

Unit	Title	Marks
1	Solid State	3
2	Solutions	4
3	Electrochemistry	5
4	Chemical Kinetics	4
5	Surface Chemistry	3
6	General Principles and Process of Isolation of Elements	2
7	P-Block Elements	6
8	d-and-f-Block Elements	5
9	Coordination Compounds	3
10	Haloalkanes and Haloarenes	4
11	Alcohols, Phenols and Ethers	4
12	Aldehydes, Ketones and Carboxylic acids	5
13	Organic Compounds Containing Nitrogen	4
14	Biomolecules	3
15	Polymers	3
16	Chemistry in Everyday life	2
Total		60

Practical Assessment

The total marks allotted for HPBOSE Class 12 Chemistry practical assessment is 25. The complete break-up for the practical assessment is tabulated below:

Evaluation Scheme for Examination	Marks
Volumetric Analysis	08
Salt Analysis	06
Content-Based Experiment	03
Class Record and Viva	04
Investigatory Project	04
Total	25

Project

Some of the suggested projects are given below:

• Study of presence of oxalate ions in guava fruit at different stages of ripening
• Study of quantity of casein present in different samples of milk
• Preparation of soybean milk and its comparison with the natural milk with respect to curd formation, effect of temperature, etc.
• Study of the effect of Potassium Bisulphate as food preservative under various conditions (temperature, concentration, time, etc.)
• Study of digestion of starch by salivary amylase and, the effect of PH and temperature on it
• Comparative study of the rate of fermentation of following materials — Wheat Flour, Gram Flour, Potato Juice, Carrot Juice, etc.
• Extraction of essential oils present in Saunf (Anised), Ajwain (Carum), Illaichi (Cardamom)
• Study of common food adulterants in Fat, Oil, Butter, Sugar, Turmeric Powder, Chilli Powder and Pepper

Note: Any other investigatory project, which involves about 10 periods of work, can be chosen with the approval of the teacher.

HPBOSE 12th Physics Marking Scheme

The total marks allocated for the examination is 100 — 60 marks for theory paper, 15 marks for internals and 25 marks for the practical assessment.

Unit	Topic	Marks
1	Electrostatics	7
2	Current Electricity	7
3	Magnetic Effect of Current and Magnetism	7
4	Electromagnetic Induction and Alternating Current	7
5	Electromagnetic Waves	3
6	Optics	12
7	Dual nature of Matter	3
8	Atoms & Nuclei	4
9	Electronic Devices	6
10	Communication System	4
Total		60

Practical Assessment

The total marks allotted for HPBOSE Class 12 Physics practical assessment is 25. The complete break-up for the practical assessment is tabulated below:

Topics	Marks
An experiment from any section	7
Two activities (One from each section)	6 (3+3)
Practical Record (Experiments & Activities)	5
Record of Demonstration Experiments & Viva (based on these experiments)	2
Viva on Experiments and Activities	5
Total	25

Section – A

Experiments

• To determine resistance per cm of a given wire by plotting a graph of potential difference versus current
• To find the resistance of a given wire using meter bridge and hence determine the specific resistance of its material
• To verify the laws of combination (series/parallel) of resistances using a meter bridge (76)
• To compare the EMF of two given primary cells using potentiometer
• To determine the internal resistance of a given primary cell using the potentiometer
• To determine the resistance of a galvanometer by half-deflection method and to find its figure of merit
• To convert the given galvanometer (of known resistance of figure of merit) into an ammeter and voltmeter of desired range and to verify the same
• To find the frequency of the A.C. mains with a sonometer

Activities

• To measure the resistance and impedance of an inductor with or without iron core
• To measure resistance, voltage (AC/DC), current (AC and check continuity of a given circuit using multimeter To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse and a power source
• To assemble the components of a given electrical circuit
• To study the variation in potential drop with length of a wire for a steady current
• To draw the diagram of a given open circuit comprising at least a battery, resistor/rheostat, key, ammeter and voltmeter. Mark the components that are not connected in proper order and correct the circuit and also the circuit diagram.

Section – B

Experiments

• To find the value of v for different values of u in case of, a concave mirror and to the find the focal length
• To find the focal length of a convex lens by plotting graphs between u and v or between I/u and 1/v
• To find the focal length of a convex mirror, using a convex lens
• To find the focal length of a concave lens, using a convex lens
• To determine the angle of minimum deviation for a given prism by plotting a graph between angle of incidence and the angle of deviation
• To determine the refraction index of a glass slab using a travelling microscope
• To find refractive index of a liquid by using (i) concave mirror, (ii) convex lens and plane mirror
• To draw the I-V characteristic curve of a p-n junction in forward bias and reverse bias
• To draw the characteristic curves of a zener diode and to determine its reverse break down voltage
• To study the characteristics of a common-emitter npn or pnp, transistor and to find out the values of current and voltage gains

Activities

• To study effect of intensity of light (by varying distance of the source) on an L.D.R.
• To identify a diode, an LED, a transistor, an IC, a resistor and a capacitor from mixed collection of such items
• Use of multimeter to
• Identify base of transistor
• Distinguish between npn and pnp type transistors
• See the unidirectional flow of current in case of a diode and an LED
• Check whether a given electronic components (e.g. diode, transistor or I C) is in working order
• To observe refraction and lateral deviation of beam of light incident obliquely o glass slab
• To observe polarization of light using two Polaroid
• To observe diffraction of light due to a thin slit
• To study the nature and size of the image formed by
• Convex lens
• Concave mirror, on a screen by using a candle and a screen (for different distances of the candle from the lens/mirror)
• To obtain a lens combination with the specified focal length by using two lenses from the given set of lenses

HPBOSE 12^th Biology Marking Scheme

The total marks allocated for the examination is 100 — 60 marks for the theory paper, 15 marks for the internal assessment and 25 marks for the practical assessment.

Unit	Topic	Marks
1	Sexual Reproduction	11
2	Genetics and Evolution	17
3	Biology and Human Welfare	10
4	Biotechnology and its Application	10
5	Ecology and Environment	12

Total

60

Practical Assessment

The total marks allotted for HPBOSE Class 12 Biology practical assessment is 25. The complete break-up for the practical assessment is tabulated below:

Topics	Marks
Two experiments	6 (3+3)
Slide Preparation	4
Spotting	6
Investigatory Project and Viva based on the project	5
Record and Viva based on the experiment	4
Total	25

List of Experiments

• Study pollen germination on a slide
• Collect and study soil from different sites and study them for texture and moisture content
• Study the pH and water holding capacity of the soil. Correlate with the kinds of plants found in them.
• Collect water from different water bodies around you and study them for pH clarity and presence of any living organisms
• Study the presence of suspended particulate matter in the air at the two widely different sites
• Study of plant population density by quadrat method
• Study of plant population frequency by quadrat method

Spotting (Study/Observation of the following)

• Study of flowers adapted to pollination by different agencies (weed, insect)
• Study of pollen germination on a slide
• Study and identify stages of gamete development, i.e. t.s. testis and t.s. ovary through permanent slide
• Study meiosis in onion bud cell or grasshopper testis through permanent slide
• Study of t.s. of blastula through permanent slide
• Study Mendelian inheritance using seeds of different colour/size of any plant
• Study prepared pedigree charts of genetic traits such as rolling of tongue, blood groups, widow’s peak, colour blindness
• Exercise on controlled pollination-emasculation, tagging and bagging
• To identify common disease-causing organisms such as Ascaris, Entamoeba, Plasmodium, ringworm. Comment of symptoms of diseases that they cause through permanent slides or specimens
• Study plants and animals found in xerophytic condition. Comment upon their adaptation/ecosystem.
• Study plants and animals found in aquatic conditions. Comment upon their adaptation/ecosystem.
• Study analogous and homologous organs in various plants and animals

Important Resources and Textbooks for HPBOSE 12th Science examination

The right reference books and resources play a crucial role while preparing for Class 12 board exams. The best resource for exam preparation is the series of recommended textbooks by the HPBOSE Board as these books cover the syllabus accurately.

Some of the most common resources that are widely used by students to prepare for HPBOSE Class 12 Science are as follows:

• NCERT (Textbooks recommended by the board)
• Pradeep's New Course Chemistry for Class 12 (Vol. I and II)
• Physics - H C Verma

• HPBOSE 12^th previous years’ question papers
• Oswaal
• Question banks

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