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157) निम्नलिखित युग्मों में से कौन सही सुमेलित है?
सल्फर डाइआॅक्साइड - दाँत
फ्रलोराइड प्रदूषण - भोपाल गैस त्रासदी
मिथाइल आइसोसायनेट - अम्ल वर्षा
ओजोन रिक्तता - चर्म कैंसर
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This is Medium Level Question in Hindi Language Posted By Sunil Saharan in General Science --> Chemistry Category (Viewed : 86 Times)
Those who had coins, enjoyed in the rain. Those who had notes, were busy looking for shelter.
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