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Mdcat-past-papers - SZABMU Quiz

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381. The oxidation number of oxygen in Na₂O₂ is:



382. The oxidation number of oxygen in NaO₂ is:



383. During electrolysis of concentrated aqueous solution of NaCl, which ion is NOT discharged at cathode?



384. Which statement correctly describes the standard electrode potential?



385. The unit of rate constant is the same as that of the rate of reaction in which of the following order of reaction?



386. If a reaction is first order with respect to a reactant, then the rate will be ___ if concentration of reactant is doubled:



387. The rate constant 'k' in the rate equation is the rate of reaction when molar concentration of each of the reactant is:



388. The rate of reaction:



389. The study of rates of chemical reactions is known as:



390. Decomposition of ammonia on heated tungsten is an example of:



391. What is incorrect about activated complex?



392. Which of the following has the smallest size?



393. Which element has smaller shielding effect among the following?



394. Which of the following alkali metals can form normal oxide as well as peroxide?



395. The transition element which doesn't show variable valency:



396. The binding energy of transition metals increases up to group:



397. Which of the following have positive electron affinity?



398. The melting point of sulphur is higher than that of phosphorus because:



399. Which one of the following noble gases will have highest boiling point?



400. A metal reacts vigorously with cold water melting into a ball of molten metal. It moves across the surface of water giving off hydrogen gas and burns with yellowish golden flame. What could be the identity of this metal?