CAT 2025 Question Paper | VARC Slot 2

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Question 15 : Five jumbled sentences (labelled 1, 2, 3, 4, and 5), related to a topic, are given below. Four of them can be put together to form a coherent paragraph. Identify the odd sentence out and key in the number of that sentence as your answer.

1. Pfas are a class of about 15,000 compounds most frequently used to make products water-, stain- and grease-resistant.
2. New research suggests exposure to some common perfluoroalkyl and polyfluoroalkyl substances (Pfas) cause changes to gene activity and that these changes are linked to health problems including multiple cancers, neurological disorders and autoimmune disease.
3. These Pfas compounds are dubbed “forever chemicals” because they do not naturally break down in the environment.
4. The research may also point toward other diseases potentially caused by Pfas that have not yet been identified.
5. The findings are a major step toward determining the mechanism by which the chemicals cause disease and could help doctors identify, detect and treat health problems for those exposed to Pfas before the issues advance.

Explanatory Answer

Sentences 2, 4 and 5 all link Pfas to diseases. Sentence 2 introduces Pfas and says research links these to multiple cancers, neurological
disorders and autoimmune disease. Sentence 4 says there could be other diseases not yet identified that are linked to Pfas. 5 follows this up saying that the findings are a major step toward determining the mechanism by which the chemicals cause disease. Between 1 and 3, 1 is a general statement about what Pfas are. This sentence could fit into a paragraph about Pfas and disease. On the other hand, 3 is about the biodegradability of Pfas. This does not relate well to the other sentences. So, option 3 is the odd one out.

The answer is '3'

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