A severe depletion of ozone (ozone hole) in a region of the ozone layer was found particularly over Antarctica The depletion is caused by chlorofluorocarbons and by other compounds like CCI4, CF4 etc.
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Q1
Ozone hole was first detected over
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Q2
Ozone hole over Antarctica was first detected by
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Q3
Ozone loss was first detected in the stratosphere over the
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Q4
Number of ozone depleters identified by Montreal Protocol (1987) was
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Q5
Corona effect in transmission can be detected by
1. hissing sound
2. the faint luminous glow which is blue in colour
3. presence of ozone which is detected by odour
Which of these is/are correct?