Railways PYQCBT 1 2020

RRB NTPC · Question 24

Which of the following units is used for measuring the amount of a substance?

  1. Tesla

  2. Joule

  3. Lux

  4. Mole

Show answer & explanation

Answer: (D) Mole

Explanation

The mole is the SI unit of amount of substance. Tesla measures magnetic field, joule energy and lux illuminance.