The oxidation state of nitrogen varies from:
(A) -3 to +5
(B) 0 to +5
(C) -3 to 1
(D) +3 to +5
The oxidation state of nitrogen varies from:
(A) -3 to +5
(B) 0 to +5
(C) -3 to 1
(D) +3 to +5

What type of questions asked from the lesson of magnetic effect of electric current
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Wavelength of green light is
A) 400-450 nm
B) 500-550 nm
C) 660-720 nm
D) 720-800 nm
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