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MDCAT - UHS Past Papers - Chemistry - Chap No 5 Quiz

Attempt 10 MCQs on MDCAT - UHS Past Papers - Chemistry - Chap No 5 | Quiz 3

21. Which of the equations shows twice the enthalpy change of neutralization as the following equation: HCl + NaOH → NaCl + H₂O



22. The given diagram shows the enthalpy changes during a chemical reaction. The diagram represents:



23. Which enthalpy change is relevant in the following process: Na(s) → Na(g) ΔH = ?



24. The enthalpy change when one mole of water is formed by the reaction of acid with an alkali under standard conditions is known as:



25. Born–Haber cycle is used to determine the lattice energy of ionic compounds. It is the application of:



26. All of the following steps are used to calculate the lattice energy in Born–Haber cycle except:



27. Majority of reactions taking place at ordinary temperatures with negative delta H are :



28. Amount of energy needed to weaken the existing bonds to an extent that can be broken through collision is called:



29. If 100 KJ of heat is absorbed by the system and 40 KJ of water is done on the system what is the change of internal energy?



30. In a unit cell of a crystal lattice the angle β is between faces:



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