Below is given a passage followed by several possible inferences which can be…
2025
Below is given a passage followed by several possible inferences which can be drawn from the facts stated in the passage. You have to examine each inference separately in the context of the passage, decide upon its degree of truth or falsity and choose your answer accordingly from amongst the alternatives provided thereafter. (Q. No. 94 to 96)
Wind is an inexhaustible source of energy and an aerogenerator can convert it into electricity. Though not much has so far been done in this field, the survey shows that there is a vast potential for developing wind as an alternative source of energy. On this basis, U.P.’s hilly areas have been found to be an ideal place for setting up aerogenerators. In U.P. hills alone, as many as 56 sites have been identified.
Wind is a source of energy, which can replace exhaustible sources of energy. (Choose the most appropriate option from below)
- A.
Probably false
- B.
Definitely true
- C.
Probably true
- D.
Definitely false
Attempted by 1 students.
Show answer & explanation
Correct answer: B
In a passage-based inference question, each statement below the passage is judged for its degree of truth using a fixed rule: an inference is Definitely True when it is a direct restatement of, or a fact that must necessarily follow from, something explicitly stated in the passage; it is Definitely False when it directly contradicts an explicit statement in the passage; and it is Probably True or Probably False when it is a plausible but unstated extension of the passage that leans one way without being certain either way.
The passage explicitly describes wind as "an inexhaustible source of energy."
The passage explicitly describes the development of wind as "an alternative source of energy" with "a vast potential."
An "alternative source of energy" is, by definition, a source that can be used in place of — that is, can replace — another source; "inexhaustible" is the direct opposite of "exhaustible."
The inference restates exactly these two explicitly stated facts in different words, so it is a direct, necessary consequence of what the passage states, with no extra assumption required.
"Probably true" would fit if the passage only implied substitutability without stating it outright; here the passage states it outright — "an alternative source of energy" — so the stronger "definitely" rating applies instead.
"Probably false" and "Definitely false" would require the passage to cast doubt on, or contradict, wind's ability to substitute for exhaustible sources; instead the passage is uniformly positive about wind's potential (a vast potential, 56 identified sites), so neither false-leaning rating fits.
Hence the inference is Definitely True.