2025 SEBA/ASSEB Class 10 General Science Question Paper | HSLC Previous Year Paper
2025 SEBA/ASSEB HSLC Class 10 General Science Previous Year Question Paper – Assam Board Exam
Class 10 General Science , 2025 Question Paper
SECTION – A
Choose the correct answer : 1 × 45 = 45
1. Electrical appliances that have metal body are generally connected to the earthing wire .What is the reason to earth the wire ?
(a) To prevent the excess of current (b) To prevent the leakage of current
(c) To prevent the extra current to the appliances (d) To prevent high resistance to the appliances
2. The device used for producing electric current is called
(a) motor (b) ammeter (c) galvanometer (d) generator
3. The refractive indices of hour mediums P , Q , R , S are 1.23 , 1.5 , 1.25 and 2 respectively. Through which medium, the speed of light is maximum ?
(a) P (b) Q (c) R (d) S
4. Which option justifies that the sun appears red at sunrise and sunset ?
(a) Red colour is scattered highest by the atmosphere
(b) The distance between the sun and the earth reduces
(c) Red colour has high wavelength , so it travels longer distance
(d) The white light disperses into seven colours, only red enters the atmosphere.
5. Which group of the following waste materials can be classified as non-biodegradable ?
(a) Plant waste, used tea bags (b) Polythene bags , plastic toys
(c) Used tea bags, paper straw (d) Old clothes, broken footwear
6. Which of the following processes explains the extraction of the sun’s energy to generate energy to light a bulb ?
(a) Conversion of electric energy into solar energy. (b) Conversion of solar energy into electric energy.
(c) Conversion of solar energy into kinetic energy. (d) Conversion of kinetic energy into solar energy.
7. A concave lens has a focal length of 20 cm . What is te power of the lens ?
(a) – 5 dioptre (b) – 0.05 dioptre (c) + 0.05 dioptre (d) (a) + 5 dioptre
8. An electric bulb is connected to a 200 V generator . The current is 0.4A . What is the power of the bulb ?
(a) 100 W (b) 90 W (c) 80 W (d) 110 W
9. Find the correct statement from the following.
(a) Ozone is not considered as poisonous and deadly gas.
(b) Ozone molecule is formed of three atoms of oxygen.
(c) Ozone is the cause of skin cancer .
(d) Oxygen and ozone both are used in respiration.
10. Which of the following is not based on solar energy ?
(a) Wind energy (b) Nuclear energy (c) Geothermal energy (d) Biogas
11. Which of the following explains the use of dams ?
(a) To replenish underground water resources (b) To provide irrigation and generate electricity
(c) To provide steady supply of water in hilly regions
(d) To provide water for conservation of forests .
12. A metal rod PQ is placed in the magnetic field . The ends of the rod are connected with a battery using wires. Where will the rod move ?
Photo
(a) Upward (b) Downward (c) Into the field (d) Out of the field
13. The magnetic field lines of solenoid are similar to the magnetic field lines of bar magnet. Which diagram correctly shows the solenoid as a bar magnet ?
(a) Photo
14. Which of the following terms does not represent electrical power in a circuit ?
(a) I²R (b) V²/R (c) VI (d) IR²
15. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm (b) mitochondria (c) chloroplast (d) nucleus
16. Which of the following is a plant hormone ?
(a) Insulin (b) Cytokenin (c) Thyroxin (d) Oestrogen
17. Asexual reproduction takes place through budding in
(a) Yeast (b) amoeba (c) leishmania (d) plasmodium
18. The example of homologous organ are
(a) potato and runners grass (b) our arm and a dog’s foreleg (c) out teeth and an elephant’s tusk (d) All of the above
19. In evolutionary terms, we have more in common with
(a) a Chinese schoolboy (b) a spider (c) a chimpanzee (d) a bacterium
20. The kidney in human beings are a part of the system for
(a) excretion (b) transportation (c) nutrition (d) respiration
21. Our genetic footprints can be traced back to our ……………….
(a) Asian roots (b) African roots (c) European roots (d) American roots
22. What happens when the egg is not fertilized ?
(a) Dies immediately (b) Lives for about one day (c) Lives for about one week (d) All of the above
23. In human beings , the normal systolic pressure is about
(a) 120 mm of Hg (b) 100 mm of Hg (c) 90 mm of Hg (d) 105 mm of Hg
24. The wings of a bat and the wings of a bird are
(a) homologous organs (b) analogous organs (c) invertebrate (d) hormone
25. In evolutionary terms , which among the following has better body design ?
(a) Bacteria (b) Spider (c) Fish (d) Chimpanzee
26. Flowers of hibiscus, mustard, etc., contain both statement and carpels. Therefore, they are
(a) unisexual (b) bisexual (c) grafting (d) fragmentation
27. 
The above reaction is an example of which type of reaction ?
(a) Displacement reaction (b) Combination reaction
(c) Decomposition reaction (d) Double displacement reaction.
28. Which of the following compounds is used in soda-acid fire extinguisher ?
(a) 
(b) 
(c) 
(d)
29. Chemical reaction is not involved in
(a) burning of candle (b) melting of candle (c) digestion of food (d) respiration
30. The pH of a neutral solution is:
(a) 5 (b) 6 (c) 7 (d) 8
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