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A piece of burning magnesium was lowered into a gas jar containing nitrogen oxide. State and explain the observations made
-Write an equation for the reaction above.
Date posted:
November 3, 2017
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Sifa za ngano za mashujaa
Date posted:
November 3, 2017
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A mixture of kerosene and water was shaken and left to stand, ammonia gas was then bubbled into the mixture followed by a few drops of phenolphthalein indicator. State and explain the observations made
Date posted:
November 3, 2017
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If chlorine gas is passed over heated iron fillings and the product dissolved in water, a yellow solution is formed.
(i) Identify the yellow solution.
(ii) What would be observed if aqueous sodium hydroxide solution was added to the yellow solution?
Date posted:
November 3, 2017
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Name the most suitable method you can use to separate;
(a) Xanthophyll and chlorophyll in green leaves.
(b) Oil from simsim seeds.
Date posted:
November 3, 2017
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Explain why the order of reactivity increases down group I elements but decreases down group (VII) elements.
Date posted:
November 3, 2017
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Briefly explain the following observations.
(i) Alkaline earth metals are generally less reactive than the alkali metals
Date posted:
November 3, 2017
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How does the use of manganese (IV) oxide in the laboratory preparation of chlorine gas differ from its use on the laboratory preparation of oxygen gas?
Date posted:
November 3, 2017
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Describe how a pure sample of copper turnings can be obtained from mixture of copper turnings and zinc carbonate
Date posted:
November 3, 2017
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Explain why individual with smaller sizes require more energy per kg of body weight than those with large sizes
Date posted:
November 3, 2017
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Identify the type of mutation represented by the following pairs of words
Shirt instead of skirt
Hoping instead of shopping
Eating instead of tea
Date posted:
November 3, 2017
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Explain six economic effects of industrial revolution in Europe
Date posted:
November 3, 2017
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Explain factors that enabled European powers to colonize Africans
Date posted:
November 3, 2017
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Explain results of migration and settlement of Cushites in Kenya
Date posted:
November 3, 2017
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Give seven reasons why the Israelites rejected the theocratic leadership.
Date posted:
November 3, 2017
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A bullet of mass 24g travelling in a horizontal path with a velocity of 450ms-1
strikes a wooden block of wood of mass 976g
resting on a rough horizontal surface. After impact, the bullet and the block move together for a distance of 7.5m before
coming rest.
(a) Name the type of collision which takes place above (1 mark)
(b) What‘s the velocity of the two bodies when they start sliding (2 marks)
(c) Calculate the force which brings the two bodies to rest (3 marks)
(d) Determine the coefficient of friction between the block and the surface during this motion
Date posted:
November 2, 2017
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Give six relevance of Nehemiah's exemplary life to Christians today
Date posted:
November 2, 2017
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Give six reasons why we require prophets in Kenya today
Date posted:
November 2, 2017
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State the four advantages and the two disadvantages of alkaline accumulators over the lead-acid accumulators and the two disadvantages.
Date posted:
November 2, 2017
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Problems facing Saccos and their solutions
Date posted:
November 2, 2017
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State two differences between rock pedestal and mushroom block
Date posted:
November 2, 2017
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State three uses of savannah vegetation
Date posted:
November 2, 2017
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Name and describe three types of drainage patterns found in Kenya.
Date posted:
November 2, 2017
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Explain how a sill is formed
Date posted:
November 2, 2017
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Give an example of a block mountain in East Africa
Date posted:
November 2, 2017
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The reason why the world is embroiled in many problems today is not because people don't think but because people don't think critically and creatively. Discuss the statement with reference to Kenya today.
Date posted:
November 2, 2017
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In deriving the equation of continuity, what three assumptions are made?
Date posted:
November 2, 2017
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A partially inflated balloon at sea level becomes fully inflated at higher altitudes. Explain this observation.
Date posted:
November 2, 2017
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Explain why a high jumper flexes his knees when landing on the ground.
Date posted:
November 2, 2017
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State three functions of the mammalian blood other than transport
Date posted:
November 2, 2017