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UHS MDCAT Past Papers Chemistry Chap No 5 MCQs Test 2
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UHS MDCAT Past Papers Chemistry Chap No 5 MCQs Test 2

Practice UHS MDCAT 2026 Past Papers Chemistry MCQs from Chap No 5. Get instant results with Explanation.
Practice Quiz 2 for "Chap No 5" (Chemistry). Total 30 MCQs available, split into 3 quizzes. Test your understanding of core concepts. Mastering these concepts is essential for securing a high percentile in UHS MDCAT.
General10 MCQs
1. Lattice energy of an ionic crystal is the enthalpy of:
2. Heat of formation (ΔH°f) for CO₂ is:
3. 2H₂O → ΔH = +285.5 kJ/mol What will be the enthalpy change in the equation?
4. Combustion of graphite to form CO₂ can be done by two ways. Reactions are: C + O₂ → CO₂ ΔH = –284 kJ/mol C + ½O₂ → CO ΔH = –110 kJ/mol CO + ½O₂ → CO₂ ΔH = –676 kJ/mol What will be enthalpy of formation of CO?
5. Reaction of water with quick lime results in the rise of temperature of the system. Using the concept of energy change, indicate the nature of the reaction:
General10 MCQs
6. The equation that represents enthalpy of atomization of hydrogen is:
7. Standard enthalpy of combustion of graphite at 25°C is –395.41 kJ/mol and that of diamond is –393.5 kJ/mol. The enthalpy change of graphite to diamond is:
8. ½ H2 (g) →H(g) ΔH =218 kJ/mol in this reaction ΔH will be called
9. Mg + ½O₂ → MgO(g) ΔH = –692 kJ/mol at STP. Enthalpy of above reaction will be called:
10. Which one of the following enthalpy changes is always exothermic?

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UHS MDCAT Past Papers

Conducting Body: PM&DC through Provincial Universities
Frequency: Annual | Time: 180 Minutes
Negative Marking: No

⚡ Test Pattern (Total: 200 MCQs):

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