5. A flammable liquid it was used to ignite a fire that burned part of the right Nairobi
Shopping Centre.
Question 8 : Read the passage and choose the correct answer
The search for alternative sources of energy has led in various directions. Many
communities are burning garbage and other biological waste products to produce
electricity . Converting waste products to gases or oil is an efficient way to dispose of
waste.
Experimental work is being done to derive synthetic fuels from coal , oil shale and
coal tars. But to date , that process has proven expensive. Other experiments are
underway to harness power , heat from the earth , is also being tested.
Some experts expect utility companies to revive hydroelectric power derived from
streams and rivers. Fifty years ago hydroelectric power provided one third of the
electricity used in the United States , but today it supplies only four percent. The oceans
are another potential source of energy . Scientists are studying ways to convert the
energy of ocean currents , tides , and waves to electricity . Experiments are also
underway to make use of the temperature differences in ocean water to produce energy.
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