A sample of a gas may be identified as chlorine if it turns
-
A.
damp blue litmus paper red -
B.
lime water miky -
C.
lead ethanoate paper black -
D.
starch iodide paper blue-black
Correct Answer: Option D
Explanation
A test for chlorine is to place damp starch-iodide paper into a test tube of chlorine. A positive result for chlorine is indicated by the paper turning from white to blue-black.