Which one of the following features is NOT shown by metals?
Answer & explanation
Correct answer: option 1
The correct answer is option 1. Looks dull.
The feature that is NOT shown by metals among the given options is Looks dull.
Metals typically have a shiny or metallic luster, so they do not look dull. They are known for their ability to reflect light, giving them a characteristic shiny appearance. Therefore, option 1 is the correct answer.