.gif)
Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Ozone layer is present in | Troposphere Stratosphere Mesosphere Ionosphere |
| 2 | Test of incomplete combustion of petrol in the presence of | CO<sub>2</sub> SO<sub>2</sub> NO<sub>2</sub> Co |
| 3 | Organic pollutants in water are measured by | DO COD Water logging PH |
