alleryاوزون کو ختم کرنے والے مادوں سے متعلق مونٹریال پروٹوکول پر کس تاریخ کو اتفاق ہوا؟
A16 ستمبر 1987
B11 دسمبر 1997
C5 جون 1972
D22 اپریل 1970
Answer & Solution
Correct answer: A. 16 ستمبر 1987
پروٹوکول 16 ستمبر 1987 پر اتفاق کیا گیا تھا، اسی وجہ سے 16 ستمبر کو اوزون ڈے کے طور پر نشان زد کیا گیا ہے۔
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