An increase in concentration in the atmosphere will result in :
1. Adverse effects on natural vegetation.
2. Global warming.
3. Temperature decrease in a global atmosphere.
4. Genetic disorders in plants and animals.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich, of the following, gases contributes nearly 50 % to the green house effect (which, in turn, causes global warming) ?
1. SO2
2. SO3
3. CO2
4. Water vapour
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGreen plants use carbon dioxide for photosynthesis and return oxygen to the atmosphere. Even then carbon dioxide is considered to be responsible for green house effect :
1. Due to an increase in atmospheric temperature.
2. Due to ozone depletion.
3. Due to decrease in atmospheric temperature.
4. Due to an increase in chlorophyll concentration.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most hazardous metal pollutant of automobile exhaust is :
1. Hg
2. Cd
3. Pb
4. Cu
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe oxygen present today in the atmosphere-
1. Is a plant product.
2. Came from ozone.
3. Was present in the beginning.
4. Is produced by carbon dioxide.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most harmful air pollutant produced by automobiles is-
1.
2. NO
3.
4. CO
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology