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Mdcat-past-papers - ETEA Quiz

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601. For an endothermic reaction, H represents the enthalpy of reaction. The minimum value for the energy for activation will be:



602. The specific heat of water is:



603. ΔH can be measured indirectly by applying:



604. Which reaction will proceed in the forward direction?



605. The unit of Kc for the system PCl₅ ⇌ PCl₃ + Cl₂ is:



606. In the production of SO₃ from SO₂ and O₂, the yield of SO₃ is increased by:



607. Consider: N₂ + 3H₂ ⇌ 2NH₃(g); ΔH = –92.46 kJ/mol The optimum temperature for ammonia synthesis is:



608. Buffer capacity is maximum when both components have:



609. Which of the following is a strong electrolyte in solution?



610. If the value of Ksp is large, the salt is:



611. The value of solubility product (Ksp) depends only on:



612. Which of the following elements has the same oxidation number in all of its known compounds?



613. Which of the following cell reactions correctly represent the electrolysis of water?



614. A cathode has reduction potential:



615. Super batteries with high charge density are also called:



616. The electrode potential of the standard hydrogen electrode is chosen as:



617. The thermal decomposition of nitrogen pentaoxide follows which one of the following order of reaction?



618. One mole of a reactant reacts with a rate of 0.6 mol dm⁻³ s⁻¹. What is the rate constant of this reaction if reaction is first order?



619. The unit of rate constant k is dm³ mol⁻¹ s⁻¹ for a chemical reaction. The order of reaction is:



620. In a rate equation, rate = k[A][B], the reaction is:



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