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Chemical Energetics And Thermodynamics QUESTIONS AND ANSWERS

IIT JEE : Chemical Energetics And Thermodynamics QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

11.Which statement is not applicable to thermochemical equations?I. They represent chemical change as well as heat changeII. They give the idea about mechanism of the processIII. They depict the spontaneity of the processIV. Exothermic or endothermic nature of reaction.

II, IV

III, IV

III, I

II, III.

12.All the naturally occurring processes proceed spontaineously in a direction which leads to

increase in enthalpy of system

decrease in entropy of system

increase in entropy of system

increase in entropy of universe

13.The heat change in a reaction does not depend upon the

conditions under which reaction is carried

state of reactants and products

number of intermediate stages involved

state of reactants and products

14.In which of the following process entropy increases?I. Rusting of ironII. Vaporisation of CamphorIII. Crystallisation of sugar from syrupIV. Atomisation of dihydrogen.

I, II

II, III

I, IV

Only IV.

15.When a solid melts, there is

an increase in entropy

an increase in enthalpy

a decrease in internal energy

Both (A) and (B) are correct.

More Chemical Energetics And Thermodynamics QUESTIONS AND ANSWERS available in next pages