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State three precautions that must be taken when using the density bottle
Date posted:
September 18, 2017
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State the adaptations of plants which enable them to reduce water loss
Date posted:
September 18, 2017
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Explain the environmental factors that affect rate of transpiration in plants
Date posted:
September 18, 2017
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Explain the structural factors that affect the rate of transpiration in plants
Date posted:
September 18, 2017
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Explain the forces that make water and mineral salts move through a plant
Date posted:
September 18, 2017
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Describe the movement of water from the soil to the leaves of a tall plant
Date posted:
September 18, 2017
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One property of a liquid that is considered while constructing a liquid – in – glass thermometer is
that the liquid expands more than the glass for the same temperature change. State any other two
properties of the liquids that are considered
Date posted:
September 18, 2017
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State the assumption made when calculating the size of a molecule in the thin oil film experiment
Date posted:
September 18, 2017
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Show that the force driving the liquid through the U – tube is proportional to the height, h
Date posted:
September 18, 2017
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Explain why a car feels lighter as it travels at a higher velocity.
Date posted:
September 18, 2017
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Highlight the steps followed when lighting a Bunsen burner
Date posted:
September 18, 2017
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Water wets clean surfaces of glass but not waxed ones. Explain
Date posted:
September 18, 2017
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Name all the forces acting on the mass suspended from a spring balance
Date posted:
September 18, 2017
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5.0g of calcium carbonate were allowed to react with 25cm3 of 1.0M hydrochloric acid until
there was no further reaction. Calculate the mass of calcium carbonate that remained
unreacted(Ca = 40, C = 12, O = 16).
Date posted:
September 18, 2017
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Dry carbon (II) oxide gas was passed over heated lead (II) oxide.
(a) Write an equation for the reaction
(b) Give one industrial application of the above reaction.
(c) Name another gas that can be used in the above reaction.
Date posted:
September 18, 2017
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a)Why is the percentage of carbon(IV)oxide in the atmosphere fairly constant?
b)Calculate the volume of carbon(IV)oxide in 8,000 m3 of air contained in a
Date posted:
September 18, 2017
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Give the importance of types of professional records maintained in an ECDE centres
Date posted:
September 18, 2017
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Which two elements will react more vigorously with each other between fluorine, neon, sodium, magnesium?
Date posted:
September 17, 2017
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Which is the largest landlocked country in the world?
Date posted:
September 17, 2017
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What was the immediate cause of the First World War?
Date posted:
September 16, 2017
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Explain why aquatic animals are able to survive under water when the surface is already frozen.
Date posted:
September 16, 2017
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1. What is oral literature?
2. Give two forms of oral literature?
3. What are some of the characteristics of myths as a form of oral literature?
Date posted:
September 16, 2017
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State three properties of a liquid used in the thermometer
Date posted:
September 16, 2017
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Dida is now three times as old as his brother and four times as old as his son. Eight years from now, Dida’s age will be twelve years more than the sum of the ages of his brother and his son. Find Dida’s present age.
Date posted:
September 16, 2017
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Explain how air enters the barrel of a Bunsen burner when the gas supply is opened.
Date posted:
September 16, 2017
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A meter rule is balanced by masses of 18g and 12g suspended from its ends. Find the position of its pivot point.
Date posted:
September 16, 2017
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The volume of a fixed mass of gas collected at 73⁰C is 0.04m³ at normal atmospheric pressure. Determine the volume when the temperature drops to 10⁰C at the same pressure.
Date posted:
September 16, 2017
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In an experiment to estimate the size of a molecule of olive oil, a drop of oil of volume 0.24mm³ was placed on a clean water surface. The oil spread into a patch of area 4.2 x 10⁴mm². Estimate the size of a molecule of olive oil and express your answer in meters.
Date posted:
September 16, 2017
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Explain why the smell of a rotting body is very strong when the sun is hot as compared to early in the morning.
Date posted:
September 16, 2017
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Discuss four ways of managing challenges in the administration of public ECDE centres in Kenya
Date posted:
September 16, 2017