The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the _______________ energy?

Byadmin February 22, 2019August 23, 2021

The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the _______________ energy?

A. Activation
B. Potential
C. Binding
D. Threshold

Chemical Reaction

Promoter_____________________?

Promoter_____________________?

A. Initiates a chemical reaction and is a catalyst by itself
B. Alters the position of equilibrium in a reversible reaction
C. Increases the number of active centres by increasing the unevenness of catalyst surface and by
creating discontinuities in the crystals
D. All A., B. and C.

Read More Promoter_____________________?
Chemical Reaction

For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a_________________?

For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a_________________?

A. Batch reactor is preferred over a single CSTR for high yield
B. Tubular reactor is preferred over a single CSTR for high yield
C. Both A. and B.
D. Single CSTR is the most suitable

Read More For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a_________________?
Chemical Reaction

The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?

The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?

A. L √(K/D1)
B. 1/[L√(K/D1)]
C. 1
D. ∞

Read More The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?
Chemical Reaction

A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 k.mole/m3, the volume of the mixed flow reactor should be increased by a factor of_______________?

A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 k.mole/m3, the volume of the mixed flow reactor should be increased by a factor of_______________?

A. 7
B. 6
C. 3
D. 7/3

Read More A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 k.mole/m3, the volume of the mixed flow reactor should be increased by a factor of_______________?
Chemical Reaction

Kinetics of a solid catalysed reaction can best be studied in a _________________ reactor?

Kinetics of a solid catalysed reaction can best be studied in a _________________ reactor?

A. Batch
B. Plug-flow
C. Mixed
D. None of these

Read More Kinetics of a solid catalysed reaction can best be studied in a _________________ reactor?
Chemical Reaction

A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is – 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be ____________?

A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is – 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be ____________?

A. 5°C
B. 10°C
C. 20°C
D. 100°C

Read More A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is – 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be ____________?

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