Basic Science : Environment In Relation To Human Welfare QUESTIONS AND ANSWERS :: part1 : 21 to 25
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
21.The stratosphere extends from the earth surface upto |
| 15 Km |
| 30 Km |
| 60 Km |
| 75 Km |
22.An odourless and highly toxic gas is |
| CO₂ |
| SO₂ |
| CO |
| No |
23.Some of the chemicals in the smoke dissolve in water droplets to form |
| Acid |
| Alcohol |
| Smog |
| Soot |
24.The troposphere extends from the earth’s surface upto |
| 15 Km |
| 30 Km |
| 60 Km |
| 75 Km |
25.Biologically active isotopes from Uranium – 235 are |
| Strontium – 90 |
| Caesium – 137 |
| Iodine – 131 |
| All the three |
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