SSLC Karnataka Science Answer Key 2025 (Available): Unofficial key PDF download
Aspirants can check and download the unofficial SSLC Karnataka Science Answer Key 2025 for all short answer questions here. The SSLC Science 2025 paper is being held on April 2, 2025.
SSLC Karnataka Science Answer Key 2025 : The Karnataka SSLC Science exam was held today, March 29, 2025, from 10 AM to 1:15 PM. Post-exam, CollegeDekho will provide an unofficial answer key, covering all 16 short questions from Part I and Part II to help candidates estimate their scores, assess their performance, and gauge their results. Please note that this answer key will be unofficial and intended for reference purposes only, as it may contain errors and official results will be announced in due course.
SSLC Karnataka Science Answer Key 2025
Find out the Karnataka SSLC Science answer key for the short-type questions here in the following section:
Physics
| Question Number | Correct Answers |
| 1. Convex mirrors are used in | (B) rear view mirrors of vehicles |
| 2. The Sun is visible to us about 2 minutes before the actual sunrise and about 2 minutes after the actual sunset because of atmospheric | (A) Refraction of Light |
| 3. A current carrying rod is placed between the poles of a horse-shoe magnet. For the maximum displacement of the rod the angle between the direction of electric cutrent and the direction of magnetic field must be | (C) 90 |
| 5. "Two magnetic field lines do not intersect each other." Justify. | Magnetic field lines don't intersect because if they did, it would imply that a single point in space would have two different magnetic field directions, which is physically impossible as a magnetic field can only have one direction at any given point. |
| 6. Observe the circuit diagram given below. Mention the direction of magnetic field that forms around the point P and around the point Q. | P - Anticlockwise, Q - Clockwise |
| 8. Write any two differences between near-sighted (Myopic ) and far-sighted (Hypermetropic) eyes. |
People with myopia (nearsightedness) see nearby objects more clearly. People with hyperopia (farsightedness) see distant objects more clearly. Conversely, nearsightedness makes distant objects look blurry. Farsightedness blurs objects that are close to you.
Myopia needs Concave lenses for treatment and Hypermetropia needs Convex lenses for treatment. |
Chemistry
| Question Number | Correct Answers |
| 14. Correct statement related to the soaps among the following is, soaps | (B) form insoluble precipitate in hard water |
|
15. CuO + H2 Heat → Cu + H2O
In this chemical reaction, | (D) copper oxide is reduced to form copper |
| 16. Mention any two mesures for preventing corrosion of iron. | To prevent iron from corroding (rusting), you can apply a protective coating like painting or galvanizing (coating with zinc). |
| 17. How is concentrated acid diluted? | Water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. When the acid is added to water slowly with constant stirring, the mixture will not splash out. Adding water into concentrate acid, it becomes dilute. |
| 18. What is rancidity? Mention any two methods of preventing rancidity. | The oxidation of oils or fats in a food resulting into bad smell and bad taste is called rancidity.It can be prevented by-i adding anti-oxidants. ii flushing with nitrogen gas. |
| 19 (a). Zinc oxide is called as an amphoteric oxide | Zinc oxide is an amphoteric oxide as it reacts with both acids and alkalis to give salt and water. |
| 19 (b). Sodium metal is stored in kerosene. | Sodium metal is stored in kerosene to prevent it from reacting with oxygen and moisture in the air, which can cause a vigorous reaction and potentially lead to fire or explosion. |
| OR 19 (a). Gold is used to make jewellery | Gold is favored for jewelry due to its high luster, resistance to corrosion and tarnish, malleability, and ductility, making it easy to shape and maintain its beauty over time. |
| OR 19 (b). Ionic compounds in the solid state do not conduct electricity. | Ionic compounds in the solid state do not conduct electricity because their ions are held in fixed positions within a rigid lattice structure, preventing them from moving freely and carrying an electrical charge. |
Biology
| Question Number | Correct Answers |
| 25. The information source for making proteins in the cells is | (C) DNA |
| 26. Blood suger level increases: Undersecretion of insulin hormone :: Swelling of the neck: | (A) Undersecretion of thyroxine hormone |
| 27. Type of asexual reproduction that becurs in spirogyra is | (D) Fragmentation |
| 28. What is the function of ozone layer? | The primary function of the ozone layer, located in the stratosphere, is to absorb a significant portion of the sun's harmful ultraviolet (UV) radiation, particularly UVB, thus protecting life on Earth from its damaging effects. |
| 29. What is neuron? | Neurons are nerve cells that send messages all over your body to allow you to do everything from breathing to talking, eating, walking, and thinking. |
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30. Write these events in correct order.
(i) Splitting of water molecules into hydrogen and oxygen (ii) Absorption of light energy by chlorophyll (iii) Conversion of carbon dioxide to carbohydrates (iv) Conversion of light energy to chemical energy. |
(ii) Absorption of light energy by chlorophyll
(iv) Conversion of light energy to chemical energy. (i) Splitting of water molecules into hydrogen and oxygen (iii) Conversion of carbon dioxide to carbohydrates |
SSLC Karnataka Science Exam Analysis 2025 Link
Candidates can check out the Karnataka SSLC Science Exam Analysis 2025 by clicking here:
SSLC Karnataka Answer Key 2025 Subject-Wise |
| Subject | Answer Key Link |
| English (First Language) | SSLC Karnataka English (First Language) Answer Key 2025 |
| Mathematics | SSLC Karnataka Mathematics Answer Key 2025 |
| English (Second Language) | SSLC Karnataka English (Second Language) Answer Key 2025 |
| Social Science | SSLC Karnataka Social Answer Key 2025 |
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