1) Which of the following is correct? a) The density of the cork is higher than the rock. b) The rock is less dense than the water. c) The cork is less dense than the rock. 2) Assume the cube and cuboid have the same weight, which of these exert greater pressure to the ground? a) Cube b) Cuboid 3) If both of these solids have the same density, which of them will have smaller mass? a) Small cube b) Big cube 4) Which of the following is incorrect? a) Heat is transferred by circular motion of particles. b) It occurs only in solid. c) Hot air rises, cool air sink. d) This cannot happen in vacuum. 5) Which heat transfer method is shown here? a) Convection b) Conduction c) Radiation 6) Which is true about the heat transfer? a) No medium is required in the heat transfer. b) It can happen in vacuum.   c) It takes place in gas and liquid. d) It involve direct contact to hot surface. 7) Which reflects all colour of lights? a) Black surface b) White surface 8) Which is not true about black surface?  a) Absorb all colours of light b) Good heat absorber c) Poor heat radiation d) Reflect heat radiation 9) Which will not happen during contraction of matter? a) Particles move less vigorously.  b) Size of matter decreases. c) Particles are more closely together. d) Particles become smaller. 10) Which of the following expand the most? a) Copper b) Kerosene c) Oxygen 11) Water pressure is the greatest ... a) at the greatest height. b) at the deepest level in the water. c) when the water is shoot to smaller distance. 12) Which of the following can reduce the stability of an object? a) Lower the centre of gravity b) Increase the centre of gravity c) Smaller supporting surface. d) Greater supporting surface 13) At a higher altitude, a) the air density is greater, the air pressure is greater. b) the air density is greater, the air pressure is lower. c) the air density is smaller, the air pressure is lower. d) the air density is smaller, the air pressure is higher. 14) When ... echo will be reduced. a) sound being absorbed b) light being aborbed c) sound being reflected d) light being reflected 15) Which is not true about solid? a) The matter has definite shape b) Brownian motion can take place. c) Cannot flow (no fluidity). d) Highest compactness (regular arrangement of patticles). 16) Diffusion can happen in a) all state of matters. b) solid only. c) liquid and gas only d) gas only. 17) Brownian motion is a) the constant motion of particles. b) random movement of particles. 18) Which will happen during liquefaction? a) Heat energy is absorbed. b) The particles contain more energy. c) Space between the particles decreases. d) It involves liquid change to gas. 19) Which gas is collected by water displacement method? a) Hydrogen b) Oxygen c) Carbon dioxide 20) Which gas is less dense than air? a) Hydrogen b) Oxygen c) Carbon dioxide 21) Which is not true about carbon dioxide? a) Collected by downward delivery. b) Turns limewater chalky. c) Product of photosynthesis. d) Does not support burning. 22) When acid reacts with metal, which gas is produced? a) Hydrogen b) Oxygen c) Carbon dioxide 23) How to test the gas produced when calcium carbonate reacts with acid? a) Using limewater b) With a glowing splint c) With a lighted splint 24) Which surface can create echo? a) Soft and smooth surface b) Hard and smooth surface c) Soft and rough surface d) Hard and rough surface 25) Which is true about sublimation? a) Gas to solid (tree frost during winter) b) Solid to gas (dry ice effect, mothball) c) Heat energy is released d) Heat energy is absorbed 26) Which is not true about fuel combustion? a) It is a vigorous oxidation. b) It absorbs oxygen and releases carbon dioxide. c) It is an endothermic reaction. d) It convert chemical energy into heat and light energy. e) It is a physical change. 27) To achieve equilibrium (stability), two forces must be in the following conditions except a) opposite direction b) same magnitude c) Acting from all directions d) collinear(act on a straight line) 28) Which of the following can help the submarine to sink? a) Pump water out of the ballast tank. b) Increase the mass of submarine by allowing air to flows in the ballast tank.. c) filled the ballast tank with air instead of water. 29) Why does most kitchen utensils are shiny silver colour? a) Shiny color is poor heat absorber b) Shiny color is poor heat radiator c) Shiny color is good heat insulator. d) Shiny color is good heat emitter. 30) At point 2, it has a) minimum potential energy, minimum kinetic energy b) maximum potential energy, maximum kinetic energy c) the least potential energy, the greatest kinetic energy d) Increasing potential energy, decreasing kinetic energy

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