Question

Complete the following paragraph by filling in the blanks with the most
appropriate words given.

Scientists all over the world are trying to invent newer ways for (1)---------- of energy without harming the environment. In Netherlands a team of scientists is researching into (2)----------- the waters of the North Sea to generate enough energy for thousands of homes. The experiment involves (3)-------------- a battery ,using salt and fresh water streams and channelizing them over stacks of membranes .The salt water contains positively charged sodium ions and negatively charged chloride ions . Electrodes were set up to create a battery which would generate power. Through this research, the Dutch are aiming at setting up a 200 mW power plant which will generate enough power to cater for three provinces. Blue
Water energy will be 30-40% more efficient than burning coal. It is also (4 )------------
and (5)---------------- Scientists in other parts of the world are also busy finding ways and means to generate energy. The (6)-------------- of a childhood pastime of flying kites gave
the senior scientists of Delhi University a brilliant idea. They felt that this simple childhood game could be used to provide some kind of breakthrough . By (7)------------------ a few kites tethered to a generator, this team realized that they could produce 10 KW of power. This was sufficient to power 10 family homes . The researchers now plan to carry this (8)----------------- further . Using multiple kites, they plan to generate 50 KW of power . They call this invention ,
Laddermill .

A	B	C	D
generate	generated	generating	generation
tapping	tap	tapped	to tap
made	making	make	to make
renewed	renewable	renewing	renew
sustain	sustaining	sustained	sustainable
observing	observe	observed	observation
flying	flown	fly	flyer
inventiveness	inventing	invention	invented

Answer 1

Scientists all over the world are trying to invent newer ways for (1) generation of energy without harming the environment. In Netherlands a team of scientists is researching into (2) tapping the waters of the North Sea to generate enough energy for thousands of homes.
The experiment involves (3) making a battery ,using salt and fresh water streams and channelizing them over stacks of membranes .The salt water contains positively charged sodium ions and negatively charged chloride ions . Electrodes were set up to create a battery which would generate power. Through this research, the Dutch are aiming at setting up a 200 mW power plant which will generate enough power to cater for three provinces. Blue Water energy will be 30-40% more efficient than burning coal. It is also (4 ) renewable and (5) sustainable Scientists in other parts of the world are also busy finding ways and means to generate energy. The (6) observation of a childhood pastime of flying kites gave the senior scientists of Delhi University a brilliant idea. They felt that this
simple childhood game could be used to provide some kind of breakthrough . By (7) Flying a few kites tethered to a generator, this team realized that they could produce 10 KW of power. This was sufficient to power 10 family homes . The researchers now plan to carry this (8) inventionfurther . Using multiple kites, they plan to generate 50 KW of power . They call this invention , Laddermill .