CLASS-10 UP BOARD SCIENCE (824 CJ) MCQs (PYQ - 2025) Instructions: 1️⃣ Click on Start Quiz 2️⃣ Answer 20 Questions 3️⃣ Click Submit 4️⃣ Get Score & Correct Answers 🎯 Practice + Persistence + Patience = Progress! 🎯 Name Email 1. The image of an object formed by a concave mirror is found virtual, erect and greater than the object. Where should be the position of the object? Between the principal focus and centre of curvature On the centre of curvature Beyond the centre of curvature Between the pole and principal focus of mirror None 2. The focal lengths of a spherical mirror and a thin spherical lens are -15 cm. The mirror and lens are possibly Both concave Both convex Concave mirror and convex lens Convex mirror and concave lens None 3. Which of the following lenses would you like to use at the time of reading small letters found in a dictionary? A convex lens of focal length 50 cm A concave lens of focal length 50 cm A convex lens of focal length 10 cm A concave lens of focal length 10 cm None 4. The part of the human eye forming the image of an object is – Cornea Iris Pupil Retina None 5. Two conducting wires having the same material, length and diameter in an electric circuit are arranged in series first and then in parallel. The ratio of heat generated in series and parallel arrangements will be – 1:2 2:1 1:4 4:1 None 6. The arrangement to produce electric current is called – Generator Galvanometer Ammeter Motor None 7. Which of the following describes the correct magnetic field near a long current-carrying wire? The lines of magnetic field are perpendicular to the wire. The lines of magnetic field are parallel to the wire. The magnetic lines of field are radial. The lines of magnetic field are concentric with centre on the wire. None 8. A solution turns red litmus into blue. The possible pH value of the solution is – 1 6 3 8 None 9. Zinc powder reacts with dilute sulphuric acid to release which of the following gas? O₂ Cl₂ CO₂ H₂ None 10. The general formula for alkyne is – CₙH₂ₙ CₙH₂ₙ₊₂ CₙH₂ₙ₋₂ CₙH₂ₙ₊₄ None 11. The functional group of aldehyde is – –OH –CHO C=O –COOH None 12. Which of the following metals displaces hydrogen from acids? Mg / Zn Pt Cu Hg None 13. In which of the following compounds is the Ketonic group present? HCHO CH₃CHO CH₃COOH CH₃COCH₃ None 14. Which of the following is related to the excretory system in humans? Stomach Spleen Heart Kidney None 15. During the process of respiration, the breakdown of glucose into pyruvates takes place in – Mitochondrial matrix Cytoplasm Nucleoplasm Lysosome None 16. The ability of an organism to give rise to new organisms from its body parts is known as – Fission Budding Regeneration Fragmentation None 17. Which of the following is converted into a seed? Ovule Stigma Style Pollen grain None 18. A section of DNA that provides information for the synthesis of a protein is called – Trait Gene Genotype Allele None 19. Which of the following is an example of an artificial ecosystem? Grassland Forest Desert Agricultural land formed by humans None 20. Which of the following is not a plant hormone? Auxin Cytokinin Thyroxin Gibberellin None 1 out of 20 Thanks for taking Quiz! If you need any help or you have any suggestions, please comment here. (Optional)