Question 1Which of them is the reactant of photosynthesis? Carbon dioxide and waterSugar and waterCarbon dioxide and oxygenSugar and oxygen
Question 2On Earth, a box has a mass of 50 kg. On the Moon, the box would have Greater mass.Greater weight.The same mass.The same weight.
Question 3Which of the following career options would be the most suitable for a colour blind person? PilotCookDesignerElectrician
Question 5Which one is correct? | Animal/Features | Wing | Fur | Feather | Scaly skin | |---|---|---|---|---| | A Mammal | | | | | | B Bird | | | | | | C Amphibian | | | | | | D Reptile | | | | | Mammal rowBird rowAmphibian rowReptile row
Question 7When the eyes look at bright light, the circular muscles ______, and the radial muscles ______. Relax, contractContract, relaxRelax, relaxContract, contract
Question 9Lead compounds were added to petrol to help it combust efficiently in car engines. It is no longer Uses in car engines because it will ______. Damage ozone layerCause damage to nervous systemCause acid rainProduce carbon monoxide in the car engine
Question 10What are the features of insect-pollinated flowers? I. Colourful petals II. Long filaments III. Small stigmas IV. Spiky pollen gains I onlyI, II, IIII, II, IIII, III, IV
Question 11A nail with a 0.25mm² surface area at the bottom. It hit with a 150N of force. What is the pressure apply on the wood? 600 N/mm²37.5 N/mm²60000 N/mm²200 N/mm²
Question 13Which one at the below has the least chloroplasts? Palisade mesophyll cellsGuard cellsUpper epidermis cellsSpongy mesophyll cells
Question 14An anti-static dryer sheet in the clothes dryer works because it Adds electric charge to the clothing.Lowers the temperature in the dryer.Reduces friction between the clothes.Shortens the drying time.
Question 15Sound of speed in water: 1500m/s. A boat sends a wave into the sea. After 10seconds it receives the echo. What is the depth of the sea? 15000m1500m7500m3000m
Question 16Why is the volume of gas in the gas syringe stop increasing? The gas go out from the tube.There is no more space for the gas to stay in the tube.There is no more reaction occurs in the flask.The gas syringe is broken.
Question 17Which feature at below will not affect the growth of plants? light intensitytemperatureCarbon dioxidefruits produced
Question 18Blood contains I. Plasma II. Red blood cells III White blood cells IV. Phagocytes I, II, IIII, III, IVI, II, IVII, III, IV
Question 19X is monatomic gas. Which is true about gas X? X burns in air.X is unreactive.X will form salt with alkaline.X is colourful.
Question 20Many countries river water is used for washing of clothes. The river water is not safe for drinking. Why is it not safe for drinking? Because river water contains dissolved saltsBecause river water contain soap from washing clothesBecause river water contain small particles of sandBecause river water may contain harmful bacteria
Question 21The graph shown below is the rate of reaction of enzyme. At which temperature the enzyme has denatured? Answer: ______ °C