SilverZone iOS Sample Paper Class 10

International Olympiad of Science - iOS’ 22 CLASS 10th SAMPLE QUESTIONS The Actual Question Paper Contains 40 Questions. The Duration of the Test Paper is 50 Minutes. 1. Which mode of reproduction has been shown in the 4. pH values of four solutions A, B, C and D are 7, 8, 9, 10 following figure? respectively. Put them in a sequence according to their nature. (A) Acidic, acidic, neutral, basic (B) Acidic, neutral, basic, basic (C) Acidic, acidic, acidic, neutral (D) Neutral, basic, basic, basic 5. Name the hydrocarbon given below. (A) Asexual mode of reproduction (B) Sexual mode of reproduction (C) Parthenogenesis (A) Propanal (B) Propene (D) All of these (C) Propyne (D) Propanoic acid 2. If 100 J of energy is available at the producer level, 6. Match the distances given in column A with the calculate the amount of energy available to hawk in appropriate images in column B. the following food chain. Concave mirror of focal length 15 cm Green plants → Grasshopper → Frog → Snake → Hawk Column A Column B (A) 0.1 J a. 10 cm i. a magnified real image (B) 0.01 J (C) 10 J b. 20 cm ii. a diminished real image (D) 10000 J c. 30 cm iii. a magnified virtual image iv. an image of same size as the 3. Examine the graph and calculate the resistance of the d. 35 cm coil at the point Q. object (A) a → iii, b → ii, c → iv, d → i (B) a → ii, b → i, c → iv, d → iii (C) a → i, b → iii, c → iv, d → ii (D) a → iii, b → i, c → iv, d → ii 7. The electronic configuration of an element X is as follows: K L M 2, 8, 6 Which one of the following options is incorrect? (A) 12 Ohms A. Group number of element X in periodic table is 6. (B) 5.2 Ohms B. Period number of element X in periodic table is 3. (C) 13 Ohms C. Number of valence electrons in one atom of element (D) 0.4 Ohms X is 6. D. Valency of element X is 2. 15

International Olympiad of Science - iOS’ 22 8. What are the end products of the anaerobic respiration v. There are two double bonds in the hydrocarbon that the yeast perform? named as propene. (A) Carbon dioxide, water and energy A. i, ii and iv B. i, ii, iii and iv (B) Alcohol, carbon dioxide and energy C. ii, iv and v D. i, iii, iv and v (C) Lactic acid, carbon dioxide, and energy 10. Examine the given circuit and calculate the total current (D) Alcohol, water and energy flowing in the circuit. 9. Which combination of statements is correct? i. C2H2 is a hydrocarbon. ii. Butane is a saturated hydrocarbon. iii. Ethyne is the only hydrocarbon in which triple bond between two carbon atoms exist. iv. All hydrocarbons belong to alkene groups contains (A) 28 ampere (B) 4 ampere atleast one double bond between two carbon (C) 0.25 ampere (D) 3.7 ampere atoms. ANSWERS 1. (A) 2. (B) 3. (C) 4. (D) 5. (C) 6. (D) 7. (A) 8. (B) 9. (A) 10. (C) 16