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Free Online Mock Chemistry Multiple Choice Test on Chemical Kinetics

Sub Category : Chemical Kinetics

Test : 8

Time Left :

1)	The minimum amount of energy required by the reacting molecules at the time of collisions in order to produce effective collisions is called (1) threshold energy (2) activation energy (3) internal energy (4) potential energy.
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2)	The chemical reaction in which reactants require high amount of activation energy are generally (1) slow (2) fast (3) instantaneous (4) spontaneous.
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3)	The rate of reaction increases by the increase of temperature because (1) collision frequency is increased (2) energy of products decreases (3) fraction of molecules possessing energy >ET (thresh old energy), increases (4) mechanism of a reaction is changed.
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4)	The value of activation energey for a chemical reaction is primarily dependent on (1) temperature (2) nature of reacting species (3) collision frequency (4) concentration of reactants.
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5)	The rate constant of the reaction increases by (1) increasing the temperature (2) increasing the concentration of reactants (3) carrying out the reaction for a longer period (4) none is correct.
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