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GCE O/L 2017 - Science I (Model Paper)

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Kavindu Perera
OKI International School, Wattala
1st to 12th Biological Science
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OL/2017/34/E-I (MP) All Rights Reserved] YEAR-END EVALUATION 2017 MODEL PAPER H % ( H 34 E I ) , 2017 ( ) , 2017 General Certificate of Education (Ord. Level) Examination, December 2017 One Hour Science I Important : Answer all questions. In each of the questions 1 to 40, pick one of the alternatives (1), (2), (3), (4) which you consider as correct or most appropriate answer. Mark a cross (X) on the number corresponding to your choice in the answer sheet provided. Further instructions are given on the back of the answer sheet. Follow them carefully. Gravitational acceleration (g) = 10 ms-2 1. Which of the following instrument has been made in accordance with the Archimedes principal? (1) Hydrometer (2) Barometer (3) Thermometer (4) Hydraulic Jack 2. What structural unit of a biological molecule is shown by the diagram below? (1) Glucose (3) Glycerol H (2) Amino Acid (4) Nucleotide R N C H H 3. What is the catalyst used in manufacturing nitric acid by oxidizing ammonia? (1) Iron (2) Nickel (3) Nitrogen COOH (4) Platinum 4. Groups to which Phytopthora and Ichthyophis belong to respectively are (1) Fungi and Annelida (3) Algae and Cnidaria (2) Algae and Reptilia (4) Fungi and Amphibia 5. Which is the domestic electric circuit component that disconnects only the live wire? (1) Miniature Circuit Breaker (3) Overload Circuit Breaker (2) RCCB (Trip Switch) (4) Isolator 6. In which of the following solvents does iodine dissolve the most? (1) Cyclohexane (2) Acetone (3) Water (4) Formalin 7. The dichromate of the unknown element Z is ZCr2O7. What of the following is the phosphate of Z? (1) Z3PO4 (2) Z(PO4)2 (3) Z3(PO4)2 (4) Z2(PO4)3 8. As shown in the diagram, what of the following is false regarding an energy pyramid? (1) It is expressed as kilojoules per square meter per year (kJm-2yr-1). (2) Through each trophic level, 10% of energy is dissipated. (3) Energy pyramids are always upright and never inverted. (4) Producers gain higher energy than consumers.

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