Related Questions

When a catalyst increases the rate of chemical reaction, the rate constant
A Decreases
B Increases
C Remains constant
D Becomes infinite
The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction.
A More than
B Less than
C Equal to
D Either B or C
The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are
A Always irreversible
B Insensitive to temperature changes
C Mostly irreversible
D Highly temperature sensitive
For a __________ order reaction, the units of rate constant and rate of reaction are the same.
A Zero
B First
C Second
D Fractional
Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is
A > 1
B 1
C 0
During constant rate period, the rate of drying decreases with the
A Decrease in air temperature
B Increase in air humidity
C Both A & B
D Neither A nor B
For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
A Linearly
B Exponentially
C Logarithmically
D Inversely
For a first order chemical reaction, the rate constant
A Changes on changing the concentration units
B Is not a function of the unit of time
C Has unit of time-1
D None of these
The rate constant of a chemical reaction increases by increasing the
A Temperature
B Pressure
C Reactant's concentration
D None of these

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