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Mohini Yadav • 27.60K Points
Instructor II Science
351

Q. फोटो कॉपी मशीन कौन-सा प्रदूषक उत्पन्न करती है

(A) ओजोन
(B) मीथेन
(C) ह्य्द्रोजन सल्फाइड
(D) नाइट्रोजन डाई ऑक्साइड
Correct Answer - Option (A)

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