SSS Sc(Chem) Prelim

CA ND IDATE NAM E CE NT RE NU MB ER SERANGOON SECONDARY SCHOOL PRELIMINARY EXAMINATION SECONDARY 4 EXPRESS I s I I I I I SCIENCE (PHYSICS, CHEMISTRY) Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Setter(s): READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. CL ASS INDE X I NU MB ER I I I I I I I 5086/01 28 August 2024 1 hour Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on this 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. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one marie 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 20. A copy of the Periodic Table is printed on page 21. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 21 printed pages, including this cover page. BP-277

1 A length of copper wire is labelled: length 0.50 m and diameter 0.50 mm. Which instruments are most suitable to measure accurately the length and the diameter of the wire? length diameter A metre rule digital calipers B metre rule digital micrometer c digital calipers metre rule D digital calipers digital micrometer 2 The diagram shows a distance-time graph for a car travelling in a straight line. In which region is the car decelerating? D distance I m 0 4-�----------------------------� 0 time Is BP-279

3 A measuring cylinder containing water is placed on a balance. A stone is placed into the water. The diagram shows the readings on the balance and on the measuring cylinder. {I What is the density of the stone? A 1. 1 g/cm3 B 1.5 g/cm3 c 4 Newton's third law describes a pair of forces. stone /I 92.5 gl g�j 2.5 g/cm3 D 2.6 g/cm3 Which row shows whether the two forces are of the same type and whether they act on the same object? the type of forces the objects which in the pair they act A different different B different same c same different D same same

5 Each tyre of a car has an area of 250 cm2 in contact with the ground. The car has a mass of 1600 kg. The weight of the car is equally distributed amongst the four tyres. What is the pressure exerted on the ground? The gravitational field strength g is 10 N/kg. A 4.0 N/cm2 B 16 N/cm2 c 40 N/cm2 D 160 N/cm2 6 Some water is heated from room temperature to its boiling point using an electric kettle. What is the principal energy transfer taking place during this period? A internal store to chemical potential store B internal store to kinetic store C chemical potential store to kinetic store D chemical potenti