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Free Online Mock Chemistry Multiple Choice Test on Chemical Kinetics

Sub Category : Chemical Kinetics

Test : 10

Time Left :

1)	Which of the following explains the increase of the reaction rate by catalyst? (1) catalyst decreases the rate of backward reaction so that the rate of forward reaction increases (2) catalyst provides extra energy toreacting molecules so that they may produce effective collisions (3) catalyst provides an alternative path of lower activation energy to thereactants (4) catalyst increases the number of collisions between the reacting molecules.
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2)	Point out the false statement (1) A catalyst does not differentiate between the forward and backward reactions (2) Low activation energy is associated with fast reaction (3) A catalyst changes the equilibrium point of the reaction (4) The activated state represents hightlyunstable state.
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3)
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4)	In fire files the flashes are produced due to the slow combustion of a protein luciferin in air and moisture. The phenomenon is known as (1) photochemical change (2) photocombusion (3) chemiluminescence (4) none of the above.
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5)
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