List of top Questions asked in TS PGECET- 2026

Select the correct statement from the following:

A typical example of a physical system with second order under-damped characteristics is a:

The closed loop poles of a stable second order system could be

Manipulated variable in water heater is:

If response of a control system is to be free of offset and oscillation, then the most suitable controller is:

A reaction in which one of the products of the reaction acts as a catalyst is called:

The rate of reaction of any component is a function of:

For the irreversible unimolecular first-order type reaction:

Which one of the following is a first-order instrument?

Which one of the following is the most suitable to measure a temperature of 2000 \(^\circ\)C?

Ordinary mercury-in-glass thermometer works on the principle of:

In thermistors, the resistance:

For Arrhenius model of the rate constant \( k = k_0 \cdot e^{-E/RT} \), the graph drawn between \( \ln(k) \) versus \( \frac{1}{T} \) gives the slope of:

Molecularity of a reaction:

The gas phase reaction \( \text{A} \rightarrow \text{B} + \text{C} \) is carried out in an ideal PFR achieving 40% conversion of A. The feed has 70 mole % A and 30% inerts. The inlet temperature is 300 K and the outlet temperature is 400 K. The ratio of the outlet to inlet molar concentration of A (assuming ideal gas mixture and uniform pressure) is:

In solid catalysed reactions, the diffusional effects are more likely to affect the overall rate of reaction for:

A pulse tracer is introduced in an ideal CSTR (with a mean residence time T) at time = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be:

The E-curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt:

The catalyst in a second order reversible reaction increases the rate of the:

The unit of frequency factor in Arrhenius equation is:

A space time of 3 hours for a flow reactor means that:

For all positive reaction orders and for a given reactor duty:

Which one of the following fixes the volume of batch reactor for a particular conversion and production rate?

For a highly exothermic, solid-catalysed reaction, what reactor configuration should be used to achieve high conversion?

The reason for referring packed towers over plate towers in distillation practice is that the packed tower operation gives: