Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if An inert gas is pumped keeping the temperature constant None of these The temperature is increased A catalyst is added TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure? Langmuir adsorption isotherm Freundlich adsorption isotherm None of these Adsorption isobar TRUE ANSWER : ? YOUR ANSWER : ?
Oil is hydrogenated using nickel catalyst in a __________ reactor. Slurry Fluidised bed Batch Fixed bed TRUE ANSWER : ? YOUR ANSWER : ?
Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum. Decreases Increases Remains unchanged Unpredictable from the data TRUE ANSWER : ? YOUR ANSWER : ?
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be 2τ 0.5τ τ/0.693 0.693τ TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a controlling factor in very fast heterogeneous reaction? Pressure Composition of reactant Heat and mass transfer effects Temperature TRUE ANSWER : ? YOUR ANSWER : ?
In a continuous flow stirred tank reactor, the composition of the exit stream Is different than that in the reactor Is same as that in the reactor Depends upon the flow rate of inlet stream None of these TRUE ANSWER : ? YOUR ANSWER : ?
In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is Less More Either A or B, depends on other factors Same TRUE ANSWER : ? YOUR ANSWER : ?
Organic catalysts differ from the inorganic catalyst in the sense that the former is Proteinous in nature Active at very high temperature only Active at cryogenic temperatures only Prohibitively costly TRUE ANSWER : ? YOUR ANSWER : ?
The conversion in a mixed reactor/accomplishing a reaction A 3R is 50% when gaseous reactant 'A' is introduced at the rate of 1 litre/second and the leaving flow rate is 2 litres/second. The holding time for this operation is __________ second. 0.5 3 1 2 TRUE ANSWER : ? YOUR ANSWER : ?