Easy
Black Riddle
I'm clean when I'm black, Dirty when white; Get too close, And you might sneeze. What am I?
Choose an answer
A.A whiteboard
B.An eraser
C.A blackboard duster
D.A Chalkboard.
Answer: A Chalkboard.
Chalk dust makes the board look 'dirty' white while wiped clean it's black, and the dust can make you sneeze.