Using clean-coal technologies to “repower” existing factories promises

Question

Using clean-coal technologies to “repower” existing factories promises ultimately a substantial reduction of polluting emissions, and will affect the full range of pollutants implicated in acid rain. The strategy of using these technologies could cut sulfur dioxide emission by more then 80 percent and nitrogen oxide emissions by more than 50 percent. The emission of smaller quantity of nitrogen pollutants would in turn reduce the formation of noxious ozone in the troposphere.

Which one of the following statements is an inference that can be drawn from the information given in the passage?

(A) Sulfur dioxide emissions are the most dangerous pollutants implicated in acid rain.

(B) Noxious ozone is formed in factories by chemical reactions involving sulfur dioxide.

(C) Twenty percent of the present level of sulfur dioxide emissions in the atmosphere is not considered a harmful level.

(D) A substantial reduction of polluting emissions will be achieved by the careful design of new factories.

(E) The choice of technologies in factories could reduce the formation of noxious ozone in the troposphere.

Rishabh121 · Accepted Answer

(A) Sulfur dioxide emissions are the most dangerous pollutants implicated in acid rain. ---> No where is it implied that Sulfur dioxide emissions is the most dangerous pollutant (cue : most)

(B) Noxious ozone is formed in factories by chemical reactions involving sulfur dioxide. ----> Noxious zone is formed in the troposphere not in factories.

(C) Twenty percent of the present level of sulfur dioxide emissions in the atmosphere is not considered a harmful level. ----> nothing about the safe or harmful levels of emissions are mentioned.

(D) A substantial reduction of polluting emissions will be achieved by the careful design of new factories. -----> The argument is not talking about new factories, but it's talking about existing ones.

(E) The choice of technologies in factories could reduce the formation of noxious ozone in the troposphere. -----> Bingo! Clean coal technologies would reduce the full range of pollutants, which includes sulfer dioxide and Nitrogen dioxide. Reduction of Nitrogen-based pollutants would reduce the formation of noxious zone.

AlexTheTrainer · Answer

The following is a pure parlor trick for Inference questions: mild language is far easier to infer as being true then strong or extreme language.

Note how one answer is far milder than the other answers. In fact, inferring that something “could reduce” something else is almost always inferable. After all, almost anything “could” be true and to “reduce” could easily mean a 0.00000001% reduction.

parlor trick means that it’s not something that can be depended on 100% of the time. But parlor tricks work, for sure.

Posted from my mobile device

mgsuprabha · Answer