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Free Online Mock Chemistry Multiple Choice Test on Chemical Kinetics
Sub Category : Chemical Kinetics Test : 13 Time Left :
1) The rate of reaction, A+B -> Products is given by the equation, r=k [A] [B]. If B is taken in large excess, the order of the reaction would be (1) 2 (2) 1 (3) 0 (4) unpredictable
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2)If initial concentration of reactants in certain reaction is doubled, the half-life period of the reaction doubles, the order of a reaction is
(1) zero (2) first (3) second (4) third
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3) The half-life for the reaction, N2O5 reversable arrow 2NO+1/2 O2 is 24 hrs. at 30°. Starting with 10 g of N2O5 how many grams of N2O5 will remain after a period of 96 hours? (1) 1.25 g (2) 0.63 g (3) 1.77 g (4) 0.5 g
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4) For an exothermic reaction, where Delta H represents the enthalpy of the reaction in kJ/mole, the minimum value for the energy of activation of backward reaction will be (1)less than Delta H (2) zero (3) more than Delta H (4) equal to Delta H
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5)In the titration between oxalic acid and acidified potassium permanganate, the manganous salt formed catalyses the reaction. The manganous salt is
(1) a promoter (2) a positive catalyst (3) an autocatalyst (4) none of these
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