The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation? |
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What is a zoom lens? |
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What is the difference between a CFL and an LED lamp? |
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Which one of following reflects back more sunlight as compared to other three? |
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Seawater (i.e. saltwater) freezes at: |
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The Indian population receives the largest dose of ionizing radiation from: |
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What range of frequencies are usually referred to as audio frequencies for humans? |
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Titan is the largest natural satellite of planet |
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Water boils at a lower temperature on the hills because |
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Which is the longest? |
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