Saved Bookmarks
| 1. |
Assertion. Change in colour of acidic solution of potassium dichromate by breath is used to test drunken drivers. Reason. Change in colour is due to the complexation of alcohol with potassiumdichromate. |
| Answer» SOLUTION :Correct R. Acidified `K_(2)Cr_(2)O_(7)`solution oxidizes alcohol and itselfis reduce to `Cr_(2)(SO_(4))_(3)` which is GREEN in colour. | |