Related Questions

Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be
A Same
B Doubled
C Halved
D One fourth of its original value
At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
A Independent of
B Directly proportional to
C Inversely proportional to
D Proportional to the square of
In a reversible chemical reaction (where, Δx = number of moles of products-number of moles of reactants )
A Addition of inert gas favours the forward reaction, when Δx is positive
B Pressure has no effect on equilibrium, when Δn = 0
C Addition of inert gas has no effect on the equilibrium constant at constant volume for any value of Δx (+ ve, - ve) or zero)
D All of the above
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
Rate of a chemical reaction is independent of the concentration of the reactants for a __________ reaction.
A Zero order
B Third order
C Consecutive
D None of these
For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant
A Is independent of pressure
B Increases with pressure
C Decreases with pressure
D Increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction
If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is
A 0
B 1
C 2
D 3
3N ও 2N মানের দুইটি বলের লদ্ধি R । প্রথম বলের মান দ্বিগুণ করলে লদ্ধির মানও দ্বিগুণ হয়। বলদ্বয়ের মধ্যবর্তী কোণের মান হবে- (The resultant of two forces 3N and 2N is R. If the first force is doubled then the resultant is also doubled. The angle between the forces is-)
A 30°
B 45°
C 65°
D 120°
In a zero order reaction, reactants concentration does not change with time and the
A Time for half change is half the time taken for completion of the reaction
B Time for half change is independent of the initial concentration
C Time for completion of the reaction is independent of the initial concentration
D Reaction rate is trebled when the initial concentration is trebled
The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
A Isobaric
B Isothermal
C Adiabatic
D None of these

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