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Which of the following pairs is wrong

Which of the following pairs is wrong

Options

(a) Pressure-Barometer
(b) Relative density-Pyrometer
(c) Temperature-Thermometer
(d) Earth-Seismograph

Correct Answer:

Relative density-Pyrometer

Explanation:

Barometer – Used to measure a atmospheric pressure

Pyrometer – Used to measure temperature of a surface

Thermometer – Used to measure a temperature gradient

Seismograph – Used to measure a earthquake Hydrometer – Used to measure a relative density

AFMC2003
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