List of top Fundamentals of Biological Engineering Questions on Reactive and non-reactive balances asked in GATE BT

A feed stream \(F_1\) containing components A and B is processed in a separation–mixer system as shown. The mole fractions of A and B are \(x_A\) and \(x_B\). If \(F_1 + F_2 = 100\ \text{kg h}^{-1}\), the degrees of freedom of the system is \(\underline{\hspace{1cm}}\). 
 

Two reactors of volumes 5 L and 10 L contain an ideal gas at 9 atm and 6 atm. When the valve is opened, the final equilibrium pressure (atm) of the system is \(\underline{\hspace{1cm}}\).
Under standard temperature (T) and pressure (P) conditions, 128 g of an ideal gas molecule A occupies a volume of 1 L. The gas molecule A obeys the relationship $RT = 0.25PV$. R and V are universal gas constant and ideal gas volume, respectively. The molecule A is: