Chemical Reaction

The enzyme which can catalyse the conversion of glucose to ethyl alcohol is ___________________?

Byadmin February 20, 2019August 23, 2021

The enzyme which can catalyse the conversion of glucose to ethyl alcohol is ___________________?

A. Invertase
B. Maltase
C. Diastase
D. Zymase

Chemical Reaction

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________?

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________?

A. Porosity is very important
B. Porosity is of less importance
C. Internal surface area is utilised efficiently
D. None of these

Read More If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________?
Chemical Reaction

In case of a P.F.R., there__________________________?

In case of a P.F.R., there__________________________?

A. May be lateral mixing of fluid
B. Should not be any mixing along the flow path
C. Both A. and B.
D. Neither A. nor B.

Read More In case of a P.F.R., there__________________________?
Chemical Reaction

What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

A. 0
B. 1
C. 2
D. 3

Read More What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?
Chemical Reaction

______________ catalytic reaction is involved in the thermal cracking of gas oil ?

______________ catalytic reaction is involved in the thermal cracking of gas oil ?

A. Homogeneous
B. Non-Homogeneous
C. Heterogeneous
D. Non-Heterogeneous

Read More ______________ catalytic reaction is involved in the thermal cracking of gas oil ?
Chemical Reaction

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: CA0= 5 kmole/m3; XA = 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_________________?

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: CA0= 5 kmole/m3; XA = 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_________________?

A. 2/3 kW
B. 1 kW
C. 5/3 kW
D. 4 kW

Read More 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: CA0= 5 kmole/m3; XA = 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_________________?
Chemical Reaction

In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be ______________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume ?

In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be ______________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume ?

A. More than
B. Less than
C. Same as
D. Data insufficient; can’t be predicted

Read More In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be ______________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume ?