Q. Photochemical reaction rate does not depend significantly on temperature, because

View solution

Q. A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given:

Cᴀ₀ = 5 kmole/m³ ; Xᴀ = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min⁻¹ ; (ΔH) = - 40kJ/mole; ρ = 1000kg/m³ ,CP = 4 J/gm.°C ; q = 10⁻³ m³/min (ρ and CP are same for the reactant and product streams).

The amount of heat to be removed is

View solution

Q. According to the 'law of mass action', the rate of reaction is directly proportional to the

View solution

Q. In a chemical reaction, __________ are conserved.

View solution

Q. For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

View solution

Q. With increase in temperature, the equilibrium __________ rises in case of endothermic reaction.

View solution

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