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Thursday, June 6, 2019
दानेदार जस्ता पर तनु सल्फ्यूरिक अम्ल डालने पर कौन-सा गैस उत्सर्जित होता है ?
(A) हाइड्रोजन गैस
(B) सल्फर डाइऑक्साइड
(C) ऑक्सीजन गैस
(D) कोई गैस नहीं
Ans (A)
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