2025_SGSS Prelim paper

St. Gabriel’s Secondary School 2025 ‘O’ Preliminary Examination Subject : Science(Physics/Chemistry) Paper : 5086/01 Level/Stream : Sec 4E/5N/4NA(OOS) Duration : 1 hour Date : 29 August 2025 Additional material(s): Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your class, register number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. There are forty questions in this question paper. Answer all questions. For each question, there are four possible answers: A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Data Sheet is printed on page 18. A copy of the Periodic Table is printed on page 19. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 19 printed pages. Name: …………………………………………( ) Class: Sec ………………..

2 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 1 Which derived SI unit is represented correctly with its basic SI units? derived SI unit basic SI units A Hz 1 s B J kg m2 s3 C Ω kg m2 s2 A2 D Pa N m 2 The graph shows how the distance travelled by a vehicle changes with time. Which row describes the speed of the vehicle in each section of the graph? P to Q Q to R R to S A constant zero constant B constant zero decreasing C increasing constant decreasing D increasing constant increasing

3 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 3 A speed-time graph of an object moving in a straight line is shown. What is the average speed of this object for 50 s? A 10 m/s B 15 m/s C 16 m/s D 20 m/s 4 Which graph shows the acceleration of free-fall for an object at different heights above the surface of the Earth? 5 A car accelerates along a straight road and then moves at a constant speed. Finally, the car slows down to rest. When are the forces on the car balanced? A when it accelerates and when it has constant speed B when it accelerates and when it slows down C when it has constant speed and when it is at rest D when it slows down and when it is at rest acceleration m/s2 height / m

SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 4 6 The extension –load graph for a spring is shown. The unstretched length of the spring is 17.0 cm. When an object is suspended from the spring, the length of the spring is 19.2 cm. What is the weight of the object? A 1.4 N B 1.6 N C 2.6 N D 3.0 N 7 A block of weight W is at rest on a table.