Order and Molecularity of Reactions NEET Questions

Physical Chemistry - Chemical Kinetics

Order and Molecularity of Reactions MCQ Questions


1.
Order of a reaction is the
A.
sum of product coefficients
B.
sum of intermediate coefficients
C.
sum of powers of concentration terms in rate law
D.
sum of stoichiometric coefficients
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ANSWER :
C. sum of powers of concentration terms in rate law
2.
Molecularity refers to
A.
number of molecules present in product
B.
number of intermediate steps
C.
number of molecules colliding in elementary step
D.
number of catalysts involved
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ANSWER :
C. number of molecules colliding in elementary step
3.
Molecularity can be
A.
zero or fractional
B.
only fractional
C.
only integral and positive
D.
negative
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ANSWER :
C. only integral and positive
4.
Order of a reaction can be
A.
zero only
B.
positive only
C.
fractional or zero or negative or positive
D.
only one
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ANSWER :
C. fractional or zero or negative or positive
5.
Which of the following is correct about order and molecularity?
A.
Both are same
B.
Always equal
C.
Order is experimental, molecularity is theoretical
D.
Both are experimentally determined
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ANSWER :
C. Order is experimental, molecularity is theoretical
6.
Order of a reaction is determined by
A.
reactants only
B.
products only
C.
experimentally
D.
predicting stoichiometry
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ANSWER :
C. experimentally