For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases ______________ times?

Byadmin February 20, 2019August 23, 2021

For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases ______________ times?

A. 8
B. 12
C. 16
D. 32

Chemical Reaction

Reactions with high activation energy are_____________________?

Reactions with high activation energy are_____________________?

A. Very temperature sensitive
B. Temperature insensitive
C. Always irreversible
D. Always reversible

Read More Reactions with high activation energy are_____________________?
Chemical Reaction

The energy balance equation over a tubular reactor under transient conditions is________________?

The energy balance equation over a tubular reactor under transient conditions is________________?

A. An ordinary non-linear differential equation
B. An algebraic differential equation
C. A linear partial differential equation
D. A non-linear partial differential equation

Read More The energy balance equation over a tubular reactor under transient conditions is________________?
Chemical Reaction

The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CA n, then what is the value of n for this reaction ?

The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CA n, then what is the value of n for this reaction ?

A. 0
B. 0.5
C. 1
D. 2

Read More The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CA n, then what is the value of n for this reaction ?
Chemical Reaction

For series reaction, the relative yield__________________?

For series reaction, the relative yield__________________?

A. Is always greater for plug-flow reactor than for the single CSTR of the same volume
B. Statement in A. is wrong
C. Decreases with increasing conversion
D. Both A. and C. hold good

Read More For series reaction, the relative yield__________________?
Chemical Reaction

In a reversible reaction, a catalyst increases the rate of forward reaction__________________?

In a reversible reaction, a catalyst increases the rate of forward reaction__________________?

A. Only
B. To a greater extent than that of the backward reaction
C. And decreases that of the backward reaction
D. And the backward reaction equally

Read More In a reversible reaction, a catalyst increases the rate of forward reaction__________________?
Chemical Reaction

A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?

A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?

A. Inner catalyst core of radius R/8 does not participate in reaction
B. Inner catalyst core of radius R/2 does not participate in reaction
C. Inner catalyst core of radius 7R/8 does not participate in reaction
D. Effectiveness factor for a zero order reaction cannot be 7/8 as it must always be 1

Read More A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?

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