List of top Basic Engineering and Science Questions on Material Science

Given the characteristic equation below, what is the number of roots which will be located to the right of the imaginary axis? \[ s^4 + 5s^3 - s^2 - 17s + 12 = 0 \]
Which one of the following behaves like an intrinsic semiconductor, at absolute zero temperature?
The energy gap (eV) at 300K of the material GaAs is
Which of the following ceramic materials will be used for spark plug insulator?
In unconventional superconductivity, the pairing interaction is
What is the magnetic susceptibility of an ideal superconductor?
Rancidity of oil can be reduced by
The characteristic equation of a closed-loop system using a proportional controller with gain \(K_C\) is \( 12s^3 + 19s^2 + 8s + 1 + K_C = 0 \). At the onset of instability, the value of \( K_C \) is —————.

In a triple-effect backward feed evaporator, the pressure of vapor space in each of the effects is related by —————.
(Hint: Use steam entry as the first effect) 

What is the heat capacity of Na2SO4.10H2O at room temperature using Kopp’s rule?
Equivalent diameter of a particle is the diameter of the sphere having the same
Which of the following minerals is not subjected to magnetic separation method?