A sample of a gas may be identified as chlorine if it turns
- damp blue litmus paper red
- lime water miky
- lead ethanoate paper black
-
starch iodide paper blue-black
The correct answer is: 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.