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1.Water boils at 100 degree C

2.Water freezes at 0 degree C

Conclusion: At low pressure ,water boils at lower temperature

The conclusion drawn is 

  • A.True
  • B.false
  • C.either probably true or probably false
  • D.Irrelevant

Answer: D

Correct answer: Irrelevant

The statements give the boiling and freezing points of water at ordinary pressure; neither says anything about what happens when the pressure changes. The conclusion introduces a factor the premises never mention, so it is irrelevant to them - true in fact, but not drawn from what is given.

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