List of top Chemical Engineering Questions

Smallest change which a sensor can detect is ...............
Which document provides detailed specifications for equipment and materials?
Due to a 20% drop in the product selling price, the pay-back period of a new plant increased to 1.5 times that estimated initially, the production cost and the production rate remaining unchanged. If the production cost is $C_p$ and the new selling price is $C_s$, then $C_p/C_s$ is:
Which cost estimation method uses historical data from similar plants?
Fixed costs in plant operations include:
Which of the following is the first step in plant design?
Which one of the following is not a type of actuator?
For highly accurate incremental position measurement which one of the following systems is used?
The device that can change the format of a signal without changing the energy form is known as:
Dead time in a process refers to:
In a heat exchanger, the primary controlled variable is often:
Which one of the following valves are best suitable for corrosive liquids?
What type of controller is used for the control of flow of liquid from a pump?
Which model is commonly used to describe non-ideal flow with backmixing?
Gain margin and phase margin are measures of:
The Arrhenius equation describes the effect of .............. on reaction rate.
Which control strategy is used to anticipate disturbances before they affect the process?
The Damköhler number (Da) relates:
The reaction A + B → C is elementary. If the concentration of A is doubled, the rate will:
For an exothermic reaction, increasing temperature will:
A reversible reaction A⇌B reaches equilibrium when:
If the formation of ammonia, shown below, is exothermic at 25°C, what will be the effect of increasing the system's temperature?
3H$_2$(g) + N$_2$(g) $\leftrightarrow$ 2NH$_3$(g)
A catalyst increases the rate of reaction by:
Mixing of entering and exit fluid does not occur in which one of the following reactors?
The Thiele modulus represents: