ICSE Class 10 Chemical Kinetics — Mock Test

Free online mock test for Chemical Kinetics (ICSE Class 10 Chemistry) — 95 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.Reactions which are of higher order but behave as first order because one reactant is taken in large excess are called:
   • A.Pseudo first order reactions
   • B.Zero order reactions
   • C.Elementary reactions
   • D.Termolecular reactions
2. 2.For the reaction 2A + B gives C + D, when [A] is tripled (at constant [B]) the rate becomes nine times, and when [B] is doubled (at constant [A]) the rate doubles. The order with respect to A and B respectively is:
   • A.2 and 1
   • B.1 and 2
   • C.2 and 2
   • D.1 and 1
3. 3.![maxwell_boltzmann_temperature.png]() Two curves are drawn in the figure, one labelled t and one labelled (t+10), where (t+10) is the higher temperature. Comparing the two curves as drawn, what happens to the peak as the temperature is raised from t to (t+10)?
   • A.The peak becomes lower and the curve broadens and spreads toward higher energy
   • B.The peak becomes taller and narrower with no shift in position
   • C.The peak stays exactly the same height and position
   • D.The peak disappears completely and the curve becomes a flat line
4. 4.The acid hydrolysis of ethyl acetate behaves as a pseudo first order reaction because:
   • A.Water is present in large excess and its concentration is nearly unchanged
   • B.Ethyl acetate is present in large excess
   • C.The reaction is truly first order in both reactants
   • D.The catalyst changes the order to zero
5. 5.For the reaction 3NO(g) gives N2O(g), Rate = k[NO]^2. The order of the reaction and dimensions of k respectively are:
   • A.Second order; mol-1 L s-1
   • B.Third order; mol-2 L2 s-1
   • C.Second order; mol L-1 s-1
   • D.First order; s-1