Q. Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in

View solution

Q. Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ↔ CaO + CO₂), the pressure of CO₂ increases, if

View solution

Q. During manufacture of H₂SO₄, the oxidation of SO₂ to SO₃ by oxygen is an en-dothermic reaction. The yield of SO₃ will be maximised, if the

View solution

Q. The role of a catalyst in a chemical reaction is to change the

View solution

Q. The vessel dispersion number (D/μL) for plug flow is

View solution

Q. Molecularity of a reaction

View solution

Q. BET apparatus is used to determine the

View solution

Q. A balanced chemical reaction equation conforms to the law of

View solution

Q. An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

View solution

Q. Reverse reaction in a chemical equilibrium is favoured by the

View solution

Q. Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction.

View solution

Q. An isothermal aqueous phase reversible reaction, P ↔ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5Cₚ - 0.125Cʀ. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is

View solution

Q. Design of heterogeous catalytic reactor involves consideration of __________ steps.

View solution

Q. What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on ?

View solution

Q. For a fluidised bed reactor, the most suitable/relevant model is a __________ model.

View solution

Q. In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)

View solution

Q. Thermodynamic equilibrium constant in a system is affected by

View solution

Q. The most suitable reactor for carrying out an auto-thermal reaction is a

View solution

Q. Which of the following chemical reactions will be favoured by low pressure ?

View solution

Q. Which of the following is an autocatalytic reaction ?

View solution