Match the following correctly. \[ \begin{array}{ll} \text{A) Goldbeater skin test} & \text{1) Carbohydrates} \\ \text{B) Molisch test} & \text{2) Terpenoids} \\ \text{C) Mayer’s test} & \text{3) Tannins} \\ \text{D) Salkowski test} & \text{4) Alkaloids} \\ \end{array} \]
The supply voltage magnitude \( |V| \) of the circuit shown below is ____ .
A two-port network is defined by the relation
\(\text{I}_1 = 5V_1 + 3V_2 \)
\(\text{I}_2 = 2V_1 - 7V_2 \)
The value of \( Z_{12} \) is: