Question

Choose the odd one out

• A. Hygrometer $\to$ Humidity
• B. Seismograph $\to$ Pressure
• C. Ammeter $\to$ Current
• D. Odometer $\to$ Speed

Answer 1

The correct option is B Seismograph $\to$ Pressure

Hygrometer is device / instrument used to measure Humidity.

Seismograph is device used to measure earthquakes.

Ammeter is device used measure Current

Also, Odometer is device used to measure speed.

$\therefore$ Wrongly matched option is B.