Question

Which of the following hydrometer is used to check the battery is fully charged?

• A. lactometer
• B. Acid battery hydrometer
• C. Base battery hydrometer
• D. Hygrometer

Answer 1

The correct option is B

Acid battery hydrometer

An explanation for the correct answer:

(B): Acid battery hydrometer

1. Acid battery hydrometers are designed to test whether a battery is fully charged.

An explanation for the incorrect correct answer:

1. Lactometer: Lactometer is a type of hydrometer, that is used to check whether milk is pure or not.
2. Hygrometer: A hygrometer is an instrument, that is used to check the humidity.

Hence, the correct answer is option (B).