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Mdcat-past-papers - ETEA - Chemistry Quiz

Filters: Board: ETEA | Subject: Chemistry |
61. The unit of Kc for the system PCl₅ ⇌ PCl₃ + Cl₂ is:



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



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



64. Buffer capacity is maximum when both components have:



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



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



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



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



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



70. A cathode has reduction potential:



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



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



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



74. 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?



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



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



77. Forward reaction is the one that:



78. For a first order reaction A → B, the rate constant is 0.0458 s⁻¹. Calculate rate of reaction if the concentration of reactant is 0.35 mol dm⁻³.



79. A reaction is first order with respect to A and second order with respect to B. The rate equation is:



80. The first ionization energy of Al is less than Mg. This is due to:



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