Civil Services Examination · வினா 61
Consider the following statements: Statement I: Some rare earth elements are used in the manufacture of flat television screens and computer monitors. Statement II: Some rare earth elements have phosphorescent properties. Which one of the following is correct in respect of the above statements?
விடையைக் காட்டு & விளக்கம்
விடை: (A) Both Statement I and Statement II are correct and Statement II explains Statement I
விளக்கம்
Their phosphorescent properties are exactly why certain rare earth elements are used in display screens.