A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ? Either of the arrangement A or B will give the same yield Data insufficient, can Large reactor followed by smaller one Smaller reactor followed by larger one TRUE ANSWER : ? YOUR ANSWER : ?
A batch reactor is characterised by Variation in reactor volume Variation in extent of reaction and properties of the reaction mixture with time Very low conversion Constant residence time TRUE ANSWER : ? YOUR ANSWER : ?
Exothermic reactions are best carried out in A plug flow reactor followed by CSTR A CSTR CSTR followed by a plug flow reactor CSTR in series TRUE ANSWER : ? YOUR ANSWER : ?
What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only? Zero Second First Third TRUE ANSWER : ? YOUR ANSWER : ?
Find a mechanism that is consistent with the rate equation and reaction given below: 2A + B → A₂B, ( - rA) = k.CA.CB A + B ⇋ AB ; AB + A → A₂B A + A ⇋ AA;AA + B → A₂B A + B ⇋ AB;AB + A → A₂B A + A ⇋ AA;AA + B → A₂B TRUE ANSWER : ? YOUR ANSWER : ?
Variables affecting the rate of homogeneous reactions are Pressure, temperature and composition Pressure and temperature only Temperature and composition only Pressure and composition only TRUE ANSWER : ? YOUR ANSWER : ?
The catalytic activity of enzymes is due to their capacity to lower the __________ energy. Activation Kinetic Potential None of these TRUE ANSWER : ? YOUR ANSWER : ?
Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because CaO is more stable than CaCO₃ Of high calcination temperature CO₂ escapes continuously CaO is not dissociated TRUE ANSWER : ? YOUR ANSWER : ?
__________ catalytic reaction is involved in the thermal cracking of gas oil. Heterogeneous Heterogeneous non Homogeneous non Homogeneous TRUE ANSWER : ? YOUR ANSWER : ?
The equilibrium constant of chemical reaction __________ in the presence of catalyst. Remains unaffected Increases Decreases Can either increase or decrease (depends on the type of catalyst) TRUE ANSWER : ? YOUR ANSWER : ?