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Free Online Mock Chemistry Multiple Choice Test on Chemical Kinetics
Sub Category : Chemical Kinetics Test : 15 Time Left :
1) For reaction A + B C + D, doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate. The rate law is given as(1) r = k[A][B] (2) r = k [A]²[B] (3) r = k [A][B]² (4) r = k [A]power1/2[B]power1/2
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2)Effect of temperature on reaction rate is given by
(1) Claisen-Clapeyron equation (2) Arrhenius equation (3) Gibbs-Helmholtz equation (4) Kirchoff's equation
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3) The decomposition of a substance follows first order kinetics. If its conc. is reduced to 1/8th of its initial value, in 24 minutes, the rate constant of decomposition process is(1) 1/24 minpower-1 (2)0.692/24 minpower-1 (3)2.303/24 log (1/8) minpower-1 (4)2.303/24 log minpower-1(5) 1/24 log(8/1) minpower-1
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4) For a first order reaction, the plot of log k against 1/T is a straight line. The slope of the line is equal to(1) Ea/R (2) 2.303/Ea x R (3) Ea/2.303 (4) -Ea/2.303R (5) 1/2.303Ea
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5) 1 dm³ of 2 M CH3COOH is mixed 1 dm³ of 3 M ethanol to form ester. The decrease in the initial rate if each solution is diluted with an equal volume of water would be(1) 2 times (2) 4 times (3) 0.25 times (4) 0.5 times
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