1st Year Chemistry MCQS with Answers
The unit of rate constant is same as that of rate of reaction in
Zero order reaction
Third order reaction
Second order reaction
first order reaction
The unit of rate constant depends upon
Molecularity of reaction
Order of reaction
Number of reactants
Concentration terms
The power of which the concentration of a substance appears in the rate expression is known as
order of reaction with respect to that substance
Molecularity of reaction
Rate of reaction
Order of reaction
After 3 half lives of a chemical reaction, the % fraction of the amount left is
50
6.25
75
12.5
With increase in 10°C temperature, the rate of reaction double. This increase in rate of reaction is due to
Decrease in activation energy of reaction
Increases in activation energy of reactants
Increase in number of effect collisions
Decrease in the number of collisions between reactant molecules
A substance which rerareds the rate of a reaction is called
None of these
Auto-catalyst
Inhibitor
Activator
1 2
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