Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry Organic Chemistry

सुगंधी प्राथमिक अमाईन थंड HNO2 शी अभिक्रिया करून                  तयार करतात

1
नायट्रोबेंझिन
2
नायट्रोसॅमिन
3
डायझोनियम क्षार 
4
बेंझिन
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