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Q: Four words have been given out of which three are alike in some manner and one is different. Select the odd one.
  • A. Decibel
  • B. Udometer
  • C. Ombrometer
  • D. Pluviometer
Correct Answer: Option A - Udometer, Ombrometer, Pluviometer are rain measuring instruments, while Decibel is the unit of measuring sound. Hence, Decibel is different from all others.
A. Udometer, Ombrometer, Pluviometer are rain measuring instruments, while Decibel is the unit of measuring sound. Hence, Decibel is different from all others.

Explanations:

Udometer, Ombrometer, Pluviometer are rain measuring instruments, while Decibel is the unit of measuring sound. Hence, Decibel is different from all others.