https://validator.w3.org/feed/docs/rss2.html Home Page 2021 Which of the following pairs of items is needed for respiration? Which substance is formed from dissolved nitrates in the soil? Which part of the plant is the main site for photosynthesis? Which of the following is not a technology used in space exploration? The table below shows mass and volume for four different solids <strong>P,Q,R and S.(Density of water is 1.0g/cm3)<br>Which solid will sink in water? <strong>The diagram below shows a circuit with a 20 heater which is operated from a 240V power supply. Use it to answer question 15.</strong><br>How much current will flow through the heater when the switch is closed? Which symbol represents an instrument for measuring potential difference? <strong>The diagram below shows an electric circuit .Use it to answer question13.</strong><br>What is the total resistance of the circuit? <strong>The diagrams below show a plotting compass placed next to a coil before and<br>after the switch is closed .Use them to answer question 12.<br>Which statement correctly explains the observation? Which of the following wave properties results in rainbow formation? Which of the following diagrams shows the correct movement of convection current in<br>water? <strong>The diagram below shows a sound wave moving through air in given <br>direction .Particle P is marked on the wave .Use it to answer question 9.</strong><br>How does particle <strong>P</strong>move as the wave passes through air? The list below consists of items in a household<br>(i)Food<br>(ii)Dry cell<br>(iii)Electric heater<br>(iv)Wood<br>Which of the items are sources of chemical energy? Which diagram does <strong>not</strong>show the correct path of a ray of light moving from one material to another? Which statement is<strong>not</strong>a necessary precaution when using electricity? The diagram below show sound waves <strong>1,2 and 3</strong><br>Which of the following is the correct decreasing order of loudness of the sound waves? Which pair of errors is found in measurement of time but <strong>not</strong>in measurement of length? <strong>The diagram below shows a measuring cylinder with water before and after<br> lowering a stone into it . Use them to answer question 3.</strong><br>What is the volume of stone? Seven identical metal spheres have a total mass of 36.4g.<br>What is the average mass of metal sphere? What is the SI unit of length? 2011 What is the correct order of the rate of breakdown in test-tubes<strong>X,Y and Z</strong>, starting with the<br>highest?<br>Highest rate………>Lowest rate What is the correct order of the rate of breakdown in test-tube <strong>X,Y and Z, starting with the highest? <strong>Use the information and the diagram below to answer question 40.</strong><br>The set-ups X,Y and Z below were used to investigate the breakdown of hydrogen peroxide<br>to produce oxygen. In each set-up, 100g of raw potatoes of different sizes were reacted with 100ml of hydrogen peroxide. Between which two stages does the mixture exist in solid form only ? <strong>The graph below shows the change in temperature of a liquid mixture as it cools.br>Use it to answer question 39</strong> Which of the following is a possible effect of removing ovaries from a woman’s body? What is the name of the part labelled <strong>Z?</strong> <strong> The diagram below shows a tissue in in a plant leaf.<br>Use it to answer question 37.</strong> What are the names of the parts labelled <strong>W</strong>and <strong>X</strong> <strong>The diagram below shows a cross section of a human heart.<br>Use it to answer question 35.</strong> Which of the following set-ups shows the image formed by a pale mirror? Which statement is true about the air resistance acting on the vehicle? <strong>The diagram below shows two vehicles R and S, moving at the same speed in the same<br>direction as shown by the arrows .Use it to answer question 33.</strong> Which <strong>two</strong>activities increase the of dissolving? <strong>Use the information below to answer question 32.</strong> Which of the following amounts of nutrients and energy are<strong>most</strong>suitable for a pregnant woman? <strong>The table below shows the amount of nutrients and energy required by a non-pregnant<br>women. Use it to answer question 31.</strong> Which of the following is a pair of instruments used to determine the density of an irregularly<br>shaped object? Test-tube<strong>M,N</strong>and<strong>O</strong>? <strong>Use the information below to answer question 29.</strong> Which of the diagram below shows the path of light as it enters and and leaves a triangular prism? Through which process does the heat from the flame reach the bottom hand? <strong>The diagram below shows two hands around a flame.<br>Use it to answer question 27.</strong> Which of the substances is <strong>not</strong>an end product of the body’s chemical reaction? Which of the following can be a source of alkali in the process of making soap traditionally? A person is typing using a computer keyboard.<br>What energy change takes place on the person? Which of the stages in the cycle is completed after millions of years?