Railways PYQCBT 1 2020

RRB NTPC · Question 23

Which of the following is a metalloid?

  1. Silicon

  2. Bromine

  3. Lead

  4. Gold

Show answer & explanation

Answer: (A) Silicon

Explanation

Silicon is a metalloid, with properties between metals and non-metals. Bromine is a non-metal; lead and gold are metals.