Chemical Reaction

The half life period ‘t’ of a zero order reaction as shown in the bellow figure, is equal to_________________?

Byadmin February 19, 2019August 23, 2021

The half life period ‘t’ of a zero order reaction as shown in the bellow figure, is equal to_________________?

A. CA0/2K
B. CA0/K
C. 0.693/K
D. 1/K

Chemical Reaction

The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is________________________?

The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is________________________?

A. Backmix reactor
B. Plug flow reactor
C. Series of CSTR
D. PFR in series

Read More The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is________________________?
Chemical Reaction

For a heterogeneous catalytic reaction____________________?

For a heterogeneous catalytic reaction____________________?

A. Free energy of activation is lowered in the presence of catalyst, which remains unchanged at
the end of reaction
B. A relatively small amount of catalyst can cause the conversion of large amount of reactants
which does not mean that catalyst concentration is important
C. The catalyst does not form an intermediate complex with the reactant
D. The surface of the catalyst does not play an important role during reaction

Read More For a heterogeneous catalytic reaction____________________?
Chemical Reaction

Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?

Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?

A. tan hT/T
B. tan T/T
C. tan hT/tan T
D. None of these

Read More Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?
Chemical Reaction

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 ___________________?

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 ___________________?

A. Blood
B. Saliva
C. Intestine
D. Gland

Read More 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 ___________________?
Chemical Reaction

Radioactive decay follows ______________ order kinetics?

Radioactive decay follows ______________ order kinetics?

A. First
B. Second
C. Third
D. Zero

Read More Radioactive decay follows ______________ order kinetics?
Chemical Reaction

In Langmuir treatment of adsorption,_________________?

In Langmuir treatment of adsorption,_________________?

A. Whole surface of the catalyst does not have the same activity for adsorption and there is
attraction between the adsorbed molecule
B. Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect
on the rate of adsorption per site
C. All the adsorption does not take place by the same mechanism
D. Extent of adsorption is more than one complete monomolecular layer on the surface

Read More In Langmuir treatment of adsorption,_________________?