Cambridge IELTS 15, Test 3, Reading Passage 2: The Desolenator: Producing Clean Water, Solution with Answer Key
Cambridge IELTS 15, Test 3: Reading Passage 2 – The Desolenator: Producing Clean Water with Answer Key. Here we will discuss detailed explanation of all the questions of the passage. Here is step by step Solution with Tips and Strategies. This post is for educational purpose only. If you find difficulties in reading passage to find the right answer in the exam, just read the post carefully. Tips and strategies will help you find the right answer.
The Desolenator: Producing Clean Water
IELTS Cambridge 15, Test 3, Academic Reading Module, Reading Passage 2
QUESTIONS 14-20: READING PASSAGE 2 HAS SEVEN SECTIONS, A-G.
** Tips: How To Solve List of Heading in IELTS Reading Passage
14. Answer: iii
Section A introduces Janssen’s device, which originally comes from the idea of “rooftop solar heating systems” in Southeast Asia. Two decades later, he “developed that basic idea he saw in Southeast Asia into a portable device…” Thus, the only appropriate heading for this section is iii – ‘From initial inspiration to new product’.
- Answer: iii.
15. Answer: vi
Section B starts by mentioning the function of the desolenator: it can “take water from different places, such as the sea, rivers, boreholes and rain, and purify it for human consumption”. Thus, ‘the sea, rivers, boreholes and rain’ can be regarded as different sources of water which can be purified (cleaned) by the device. So the heading is vi – ‘Cleaning water from a range of sources’.
- clean = purify
- Answer: vi.
16. Answer: v
Section C explains how the device works. It starts by emphasizing that “unlike standard desalination techniques, it (the desolenator) doesn’t require a generated power supply: just sunlight”. This is considered the feature of the desolenator which makes it different from other alternatives. Thus, the heading is v – ‘What makes the device different from alternatives’.
- different = unlike
- Answer: v.
17. Answer: x
The topic sentence of Section D is right at the beginning: “A recent analysis found that at least two-thirds of the world’s population lives with severe water scarcity for at least a month every year”. The section then continues by describing the hardships in such regions with water shortage, with different vocabulary for the same phenomenon: “water scarcity”, “water stress”. So the correct heading must be x – ‘The number of people affected by water shortages’.
- water shortage = water stress = water scarcity
- Answer: x.
18. Answer: iv
This section names “a wide variety of users” for the desolenator, both in the developing and developed world. In the developing world, customers can be “those who cannot afford the money for the device outright and pay through microfinance, and middle-income homes that can lease their own equipment”. Meanwhile, potential markets in developed countries are “niche markets where tap water is unavailable”. Therefore, the most suitable heading for Section E would be iv – ‘The range of potential customers for the device’.
- customers ~ users
- Answer: iv.
19. Answer: viii
This section discusses the price of the desolenator. Janssen said that his company has a “social mission” and that the main application would be in “the developing world and humanitarian sector”. By saying “this is the way we will proceed”, Janssen implies that the company will proceed to produce devices that can help those in need. Thus, it can be inferred that profit is not the primary goal for Janssen. The answer is viii.
- Answer: viii.
20. Answer: i
This section mentions the funding of the project (“It has raised £340,000 in funding so far”) and its future prospects (“the company aims to be selling 1,000 units a month”). Thus, the most appropriate heading is i – ‘Getting the finance for production’.
- finance = funding
- Answer: i.
QUESTIONS 21-26: COMPLETE THE SUMMARY BELOW.
** Tips: How to Solve Completing Summaries with and without a wordlist in IELTS Reading Module
21. Answer: wheels
Key words: device, used, different locations,
Section C explains how the desolenator works: “It measures 120 cm by 90 cm, and is easy to transport, thanks to its two wheels”. ‘easy to transport’ has been paraphrased into ‘can be used in different locations’. The feature that makes this possible is its ‘two wheels’. However, as we can only use ONE WORD, the answer must be ‘wheels’.
- Answer: wheels.
22. Answer: film
Key words: water, fed, pipe, flows, solar panel
“Water enters through a pipe, and flows as a thin film between a sheet of double glazing and the surface of a solar panel”. After water enters a pipe (or is ‘fed into’ a pipe), a thin film of water flows out, between ‘a sheet of double glazing and the surface of a solar panel’. It can be inferred that the film of water flows over the surface of a solar panel. Therefore, the blank should be filled with ‘film’.
- Answer: film.
23. Answer: filter
Key words: any, particles, water, caught in
“The device has a very simple filter to trap particles”.
- catch = trap
So this sentence can be paraphrased into the passive voice as ‘particles are trapped/caught in a very simple filter’. The answer is ‘filter’.
- Answer: filter.
24. Answer: waste
Key words: purified, water, tube, types, through another
This sentence distinguishes between two types of liquid that come out through two different tubes. In Section C: “There are two tubes for liquid coming out: one for the waste – salt from seawater, fluoride, etc. – and another for the distilled water”. The term ‘distilled water’ is synonymous to ‘purified water’, so the other type of liquid must be ‘waste’.
- purified = distilled
- Answer: waste.
25. Answer: performance
Key words: screen, displays, transmits, information, company, know, Desolenator, requires
The last sentence of section C states that: “The performance of the unit is shown on an LCD screen and transmitted to the company which provides servicing when necessary”.
The first part of the sentence can be paraphrased using the passive voice into ‘an LCD screen shows the performance of the unit’.
- display = show
- device = unit
So the answer for Q25 is ‘performance’.
The second part of the sentence means that the information lets the company know when it is necessary to do servicing, i.e. when the device requires servicing. So the answer for Q26 is ‘servicing’.
- require = necessitate (necessary)
- Answer: performance; servicing.
26. Answer: servicing
Key words: screen, displays, transmits, information, company, know, Desolenator, requires
The last sentence of section C states that: “The performance of the unit is shown on an LCD screen and transmitted to the company which provides servicing when necessary”.
The first part of the sentence can be paraphrased using the passive voice into ‘an LCD screen shows the performance of the unit’.
- display = show
- device = unit
So the answer for Q25 is ‘performance’.
The second part of the sentence means that the information lets the company know when it is necessary to do servicing, i.e. when the device requires servicing. So the answer for Q26 is ‘servicing’.
- require = necessitate (necessary)
-
- Answer: performance; servicing.
Answer Key – The Desolenator: Producing Clean Water
The Desolenator: producing clean water Reading Answers
14. iii
15. vi
16. v
17. x
18. iv
19. viii
20. i
21. wheels
22. film
23. filter
24. waste
25. performance
26. servicing
