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प्रश्न
Choose the correct answer.
This gas protects us from the harmful ultraviolet radiation.
विकल्प
Oxygen
Ozone
Helium
Hydrogen
MCQ
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उत्तर
Ozone
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Choose the correct answer.
This gas protects us from the harmful ultraviolet radiation.
Oxygen
Ozone
Helium
Hydrogen
Ozone