Basic Science : Environment In Relation To Human Welfare QUESTIONS AND ANSWERS :: part1 : 6 to 10
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
6.Percentage of oxygen in the troposphere is |
| 79 |
| 0.03 |
| 20 |
| Trace |
7.Emphysema is a |
| Respiratory diseases |
| Coronary heart diseases |
| Rheumatic heart diseases |
| Whooping cough |
8.The percentage of nitrogen in the troposphere is |
| 79 |
| 20 |
| 0.03 |
| Trace |
9.Thermal inversions occur during |
| Summer |
| Autumn |
| Winter |
| Spring |
10.Epidermis and mesophyll of the leaves are damaged by the acids in |
| Fog |
| Smog |
| Soot |
| Smoke |
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