For the exam on April 2, find here the Karnataka SSLC Science Exam 2025 most expected questions to gain high marks in the exam. The expected questions are provided as per an analysis of previous years' papers.

Karnataka SSLC Science 2025 Most Expected Questions: The Karnataka SSLC Science 2025 exam will be held on April 2, 2025. Students can review the most anticipated questions here for the Karnataka SSLC Science 2025 exam. The analysis of the most anticipated questions for the Karnataka SSLC Science exam was conducted using the questions from the previous year. Candidates may view the Karnataka SSLC Science paper pattern here in addition to the most anticipated questions. Candidates will have three hours to finish the assignment, and the exam will consist of 80 marks. As per the question paper format, the paper will be divided into three parts, Part A (Physics), Part B (Chemistry), and Part C (Biology).
Also Read | Karnataka SSLC Science Model Question Paper 2025
Karnataka SSLC Science 2025 Most Expected Questions
Check out the Karnataka SSLC Science 2025 most expected questions from each sections have been analysed here:
Part A- Physics
- Write any two properties of magnetic field lines.
- If the focal length of a spherical mirror is 25 cm, then find its radius of curvature.
- Draw the symbol diagram of two electric cells connected in series in an electric circuit.
- What is long-sightedness (Hypermetropia)? Mention the two causes for this defect.
- What problems will occur when live and neutral wires are connected directly to the household electrical appliances from the electric poles?
- "The absolute refractive index of a medium cannot be less than 1." Justify this statement.
- What isthe Tyndall effect? The colour of the clear sky is blue. Why? Explain.
- State the laws of reflection of light.
- Stars appear to be twinkling. Why ?
- How do magnetic field lines appear when electric current passes through a circular loop of conducting wires?
- State Joule's law of heating. Explain how an electric bulb works based on this law.
- An electric heater connected to a 220 V generator draws a current of 10 A. What is the power of the electric heater? If it is used for 8 hours a day, then calculate the total cost of using it for 30 days at Rs. 5-00 per 1 kWh.
- A wire of given material having length I ' and area of cross-section 'A' has a resistance of 4 Q. What would be the resistance of another wire of the same material having a length う and the area of cross-section 2 A?
- Resistivity of a material A is 12 10 Ω m and the resistivity of a material B is 2·63 × 8 10− Ω m. Which of these two materials can be used as an insulator?
- A ray of light travelling in kerosene enters obliquely into water. Does that light ray bend towards the normal or away from the normal? Why? (Refractive indices of water and kerosene are 1.33 and 1.4,4 respectively)
Part B- Chemistry
- Write the structural formula of the ketone having three carbon atoms.
- What is galvanisation?
- The thermite process has wider industrial applications. Why?
- The pH value of an antacid is more than 7. Give a reason.
- What are functional groups? Name the functional group present in propanal and propanol.
- What are alkynes? Write the molecular and structural formula of Benzene.
- On heating crystals of copper sulphate, its blue colour disappears. Give the reason for this change. How can the blue colour of copper sulphate be restored?
- An aqueous solution of HNO3 shows acidic character, but the solution of alcohol does not show this character. Why?
-
Give reasons for the following uses of baking soda :
i) As an ingredient in antacids
ii) As baking powder in bakeries. -
Write the electron dot structure of the following molecules :
i) Hydrogen
ii) Ethane. -
Give reason :
a) Aluminium oxide is called an amphoteric oxide.
b) Calcium floats on water. -
Write the balanced chemical equations for the following chemical reactions
i) Burning of natural gas
ii) Reaction of potassium metal with water
iii) Reaction of iron with copper sulphate solution. - Show the formation of the sodium chloride molecule by transfer of electrons.
- Draw the diagram of the arrangement of apparatus used to show the reaction of zinc granules with dilute sulphuric acid and testing hydrogen gas by burning, and label zinc granules.
- One test tube has distilled water, and the other two test tubes have acidic and basic solutions. How can the nature of these three solutions be identified using red and blue litmus paper?
Part C- Biology
- 'Stomata of leaves facilitate the transportation of water through xylem.' Justify.
- The surgical method of contraception is better than the oral method of contraception. Why?
- Mention any two advantages of vegetative propagation.
- Use of non-biodegradable substances should be minimised. Why?
- How is the ozone layer formed? Protection of the zone layer is necessary. Why? Give reasons.
- Draw the diagram showing the germination of pollen on the stigma and label the part ovary.
- A round, yellow seed ( RRYY ) producing pea plant is crossed with wrinkled, green seeds (rryy) producing pea plant. Write the checkerboard to show the results obtained in the F generation of this cross. What is the phenotypic ratio of the plants produced in the F generation?
- What are biodegradable and non-biodegradable substances? Give an example for each.
- Give an example of a food chain of an aquatic ecosystem. If there is an increase in the number of organisms in the third trophic level, how does this affect the food chain?
- How do Mendel's experiments show that the parental traits are inherited independently by the offspring of the next generation?
- What is the role of arteries and capillaries in the circulation of blood in our body? Mention the importance of double circulation.
- The roles of the ‘uterus’ and ‘placenta’ are complementary to each other in the development of a child. How? Explain.
- What are the differences between xylem and phloem tissues ?
- A tall (TT) pea plant is crossed with a dwarf (tt) pea plant. Mention the types of plants obtained in F₁ generation and represent the result obtained in F generation with the help of a checkerboard, and mention the ratio of varieties of plants.
- What is the reflex arc? Trace the sequence of events that occur in this structure when a bright light is focused on our eyes.
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