Statement-I : On increasing temperature, rate ofreaction increases for endothermic reaction whiledecreases for exothermic reaction.Statement-II : In presence of catalyst, activationenergy decreases for both endothermic andexothermic reactions.(1) Statement-I and statement-II both are correct(2) Statement-I is correct but statement-II is incorrect(3) Statement-I is incorrect but statement-II is correct(4) Statement-I and statement-II both are incorrect

KA1 Complete the sentence below.In exothermic reactions the chemical energy ____________ and the extra energy is ____________.decreases; absorbeddecreases; releasedincreases; absorbedincreases; released

Statement I: If heat is added to a system, its temperature must increase.Statement II: If positive work is done by a system in a thermodynamic process, its volume must increase.In the light of the above statements, choose the correct answer from the options given belowStatement I is true but Statement II is falseBoth Statement I and Statement II are falseBoth Statement I and Statement II are trueStatement I is false but Statement II is true

Question 11adding a catalyst increases the rate of reaction byA same reaction pathway and higher activation energyB providing an alternate pathway with lower activation energyC same reaction pathway and lower activation energyD providing an alternate pathway with higher activation energy

A catalyst is added to a reaction. Which of the following statements best describes the effect that a catalyst has on a reaction? Group of answer choicesThe catalyst gives the reactants more kinetic energyThe reaction rate is decreasedThe activation energy of the reaction is increasedThe activation energy of the reaction is decreased

This question contains Statement −1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.Statement - I:Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion. andStatement - IIFor heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decrease with increasing Z.Statement −1 is false, Statement −2 is true.Statement - 1is true, Statement −2 is true; Statement −2 is correct explanation for Statement-1.Statement −1 is true, Statement −2 is true; Statement −2 is not a correct explanation for Statement-1.Statement −1 is true, Statement −2 is False.