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hardMCQIndian Competitive Exams2026General Science
1 mark

Instrument for measuring blueness of the sky or ocean is called ________.

  1. A
    Bathymeter
  2. B
    Ceraunograph
  3. C
    Cyanometer
  4. D
    Barometer

Solution & Step-by-step Explanation

A cyanometer is an instrument invented by Albert-Bénédict de Saussure in 1789 to measure the intensity of the blue color in the sky. It helps meteorologists and scientists gauge atmospheric clarity and water vapor content.

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Instrument for measuring blueness of the sky or ocean is called ________.
A
Bathymeter
B
Ceraunograph
C
Cyanometer
D
Barometer

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