Chemistry Chemical Energetics Test Online Mcqs Preparation Chemistry Chemical Energetics Test Online Mcqs Preparation With Answers Start Below 123456789101112131415Show paginator Hide paginator 7% Question 1 of 15 1. What is not correct about ∆HfA. Its value can be greater or less than zeroB. It is always negativeC. Its value gives an idea about the relative stability of reactants and the productsD. Values depends upon nature of bondsQuestion 1 of 15 Loading... Question 2 of 15 2. The heat of reaction depends upon:A. Path of the reaction and the temperatureB. Temperature of the reactantsC. Physical states of the reactants and the productsD. Both a and bQuestion 2 of 15 Loading... Question 3 of 15 3. When a solid melts, there is:A. Increase in entropyB. Decrease in internal energyC. Increase in enthalpyD. Both a and bQuestion 3 of 15 Loading... Question 4 of 15 4. The lattice energy of NaCl isA. 787 J/moleB. 790 kJ/molC. 780 kJ/molD. -787 kJ/moleQuestion 4 of 15 Loading... Question 5 of 15 5. Which of the following has positive value of enthalpy:A. NeutralizationB. CombustionC. All of the aboveD. AtomizationQuestion 5 of 15 Loading... Question 6 of 15 6. The exothermic process isA. RespirationB. BoilingC. SublimationD. EvaporationQuestion 6 of 15 Loading... Question 7 of 15 7. Most of the reactions which give stable products areA. None of theseB. IsothermalC. EndothermicD. ExothermicQuestion 7 of 15 Loading... Question 8 of 15 8. A hypothetical reaction X → 2Yproceeds by the following sequence of steps: 1/2X → Z ∆H = q1Z → 2W ∆H = q2W → 1/2Y ∆H = q3The values for the ∆H of the reaction isA. 2(q1 + q2 + q3)B. 2q1 + 2q2 + 3q3C. None of theseD. m2(q1 + q2 + q3)Question 8 of 15 Loading... Question 9 of 15 9. Calories is equivalent toA. 418.4 JB. 40.18 JC. 4.184 JD. 0.4184 JQuestion 9 of 15 Loading... Question 10 of 15 10. A state function which describes together the internal energy and product of pressure and volume is calledA. WorkB. Kinetic energyC. EnthalpyD. Internal energyQuestion 10 of 15 Loading... Question 11 of 15 11. The enthalpy change for the reaction C2H2 + 5/2 O2 → 2CO2 + H2O is brown as enthalpy ofA. Vaporization of C2H2B. Fusion of C2H2C. Formation of CO2D. Combustion of C2H2Question 11 of 15 Loading... Question 12 of 15 12. Enthalpy of neutralization of strong acids and strong bases have same values because:A. Strong acids and bases are ionic substancesB. The net change involves the combination of H+ and OH-1 ions form waterC. Acids always give rise to H+ and bases always furnish OH-1 ionsD. Neutralization leads to the formation of salt and waterQuestion 12 of 15 Loading... Question 13 of 15 13. NaOH + HCl → NaCl + H2O Enthalpy change in the above reaction is calledA. Enthalpy of neutralizationB. Enthalpy of formationC. Enthalpy of reactionD. Enthalpy of combustionQuestion 13 of 15 Loading... Question 14 of 15 14. The enthalpy of formation of a compound is:A. NegativeB. PositiveC. None of the aboveD. Either positive or negativeQuestion 14 of 15 Loading... Question 15 of 15 15. According to Hess’s Law, the enthalpy change for a reactionA. Depends on pathB. Independent of the pathC. None of theseD. The sum of ∆E and ∆HQuestion 15 of 15 Loading... Loading... Related Study Posts:MDCAT Test Chemistry Test Online PreparationASF Written Test Preparation Online McqsOnline ECAT Test Preparation McqsFPSC SST Test Preparation Mcqs OnlinePPSC Lecturer Test Preparation Online McqsTESCO Jobs Online NTS Test Preparation McqsLecturer Test KPPSC Preparation Mcqs OnlineFIA ASI Sub Inspectors Job 2025 OTS Test Preparation…SPSC SST Test Preparation Mcqs Online with SyllabusFPSC Test Preparation Mcqs Online Subject Wise