IIT JEE : Environmental Chemistry QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
26.Environmental pollution affects |
| Biotic components |
| Plants only |
| Humans only |
| Both biotic and abiotic components of environmint. |
27.Carbon dioxide content in atmosphere is |
| 0.0034% |
| 0.034% |
| 0.34% |
| 3.4%. |
28.The presence of which of the following in drinking water is responsible for mottling of teeth |
| Mercury |
| Iodine |
| Chlorine |
| Fluorine. |
29.U.V. radiation from the sun causes a reaction in the atmosphere that leads to production of |
| Fluorides |
| Carbon monoxide |
| Sulphur dioxide |
| Ozone. |
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