https://validator.w3.org/feed/docs/rss2.html Which two substances are formed when hydrochloric acid is mixed with sodium hydroxide solution? What does the instrument shown below measure ? Which external condition caused the change shown in diagram Y Diagram X below shows the iris and the pupil of an eye. Diagram Y shows the same eye after a change in external conditions. Use the diagrams to answer question14. Rain water contains a certain substance that dissolves calcium carbonate in rocks and in the process the substance causes water to becomes hard. What is the name of the substance? In which of the circuit diagrams would the bulbs show different levels of brightness? The identical bulbs are connected in different circuit combination as shown in diagrams P,Q,R and S. Use the diagrams to answer question 12. What is the volume of the cork? Use the information below to answer question 11. A cork is attached to a sinker of volume 25cm3. When the cork and the sinker are both dipped gently into a measuring cylinder containing 50 cm3 of water, the water level rises to 83cm3. Which of the following apparatus can be connected at position X to measure the volume of the gas produced? The diagram below shows some of the apparatus used to prepare oxygen. Use it to answer question 10. The diagram below shows some of the apparatus used to prepare oxygen. Use it to answer question 10. Which method could be used to separate a mixture of liquids with different boiling points ? Methylated spirit is a liquid at room temperature. Which diagram shows the change in the arrangement of particles of the methylated spirit when it evaporates? Sodium chloride crystals are dissolved in water. Which of the following masses will produce a 40% sodium chloride solution? A circuit diagram is shown below At which position on the diagram would it be best to place a fuse? The bimetallic strip is heated for some. Which of the diagrams shows the strip immediately after heating? The diagram below shows a bimetallic strip made of brass and steel .Brass expands more than steel when heated .Use the diagram to answer question 5. Which the letter represent an omnivore? At which part of the curve is the substance a mixture of solid? Which part of the female reproductive system below produces chemicals that are responsible for the development of secondary sexual characteristics? The graph below shows a heating curve of a substance. The curve is not drawn to scale. 2011 Which two substances produce carbon dioxide when reacted together? The chart below shows the flow of energy in an ecosystem .The organism in the ecosystem are represented by the letters J,K,L and M. Use the chart to answer question 3. What is the function of the hormone insulin? The diagram below illustrates the menstrual cycle of a woman in a certain month. The woman is not pregnant. Between which dates was the level of progesterone decreasing? Fossil fuels are formed from The diagram below shows a man pushing a trolley loaded with a bag of cement mass 50 kg. The man applied a constant force of 100 N. Another identical bag of cement is loaded in the trolley. The same force is used to push the trolley. How will the acceleration of the trolley be affected? Which of the following instruments measures a vector quantity? The graph below shows the blood glucose level and the levels of different hormones A, B, C and D in the body. Which of the hormones is most likely to be insulin? Which of the following is a property of carbon dioxide? Which of the following actions will affect the pitch of the sound from a guitar? The diagram below shows a longitudinal wave with some lengths labelled P,Q,R and S. Which letter represents the wavelength? During which change of state of matter do the particles become more widely separated? How many protons and neutrons are found in a nucleus of hydrogen atom? A candle is burned in a closed container. Which row shows the changes in the percentages by volume of carbon dioxide and oxygen inside the container? An outline of the Periodic Table is shown below. Some elements are represented by letters. Which letters represent two elements which are reactive metals belonging to the same group? Iron is extracted from its ore by heating with carbon. Which term describes this type of reaction? A sample of acid rain water is passed through magnesium oxide as illustrated in the diagram. A few drops of Universal Indicator are added to the filtrate. What will be the colour of the Universal Indicator in the filtrate? Sodium chloride is added to pure water How does this affect the melting point and the pH of water?A The diagrams below show iron bars being magnetised to make electromagnets 1 and 2. One end of electromagnet 1 is labelled X while one end of electromagnet 2 is labelled Y. Which magnetic poles are producfed at X and at Y ? The table below shows the distance travelled by a car measured at intervals of 2 hours. What is the average speed of the car? What is the the name of the blood component shown in the diagram below? The table below shows the distance travelled by a car measured at intervals of 2 hours. What are the main energy changes that take place in a thermal power station? 2017 Which of the following objects is not a source of electrical energy? The diagram below shows information cards about three electrical appliances. The cards are labelled P, Q and R. Which row shows the decreasing order of electrical energy consumption by the appliances in one hour? Home Page