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Free gk questions Online Test - MeritNotes
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No. of Questions :10
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1. Define nitrogen cycle?
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2. How is air important?
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3. What is global warming?
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4. Write a note on stratosphere?
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5. What is the cause of green house effect?
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6. Define air pollution?
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7. What is atmosphere?
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8. Write any two uses of nitrogen?
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9. What is acid rain?
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10. What is biological fixation of nitrogen?
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