Air Pollution - Global Warming Mini Q Bank - Environmental Chemistry Environmental Chemistry Chemistry - XI NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Which, 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

Subtopic: Air Pollution - Global Warming |

85%

From NCERT

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The 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.

Subtopic: Air Pollution - Global Warming |

71%

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