The reaction between ethanol and semicarbazide is shown below:
\(CH3 − CH = O + H2N − NH − C(= O) − NH2− > CH3 − CH = N − NH − C(= O) − NH2\)
The compound contains three nitrogen atoms
Consider the following reaction of benzene. the percentage of oxygen is _______ %. (Nearest integer) 





Two p-n junction diodes \(D_1\) and \(D_2\) are connected as shown in the figure. \(A\) and \(B\) are input signals and \(C\) is the output. The given circuit will function as a _______. 