Q.1 Unit of rate of reaction for first order reaction is
(a) mol lit–1 sec–1 ☑️
(b) lit mol–1 sec–1
(c) sec–1
(d) lit2 mol–2 sec–1
Q.2 Unit of rate constant for the 3 rd order reaction is
(a) mol lit–1 sec–1
(b) lit mol–1 sec–1
(c) sec–1
(d) lit2 mol–1 sec–1☑️
Q.3 Unit of specific rate of reaction for 3rd order reaction is
(a) mol. lit–1 sec–1
(b) lit mol–1 sec–1
(c) sec–1
(d) lit2 mol–1 sec–1☑️
Q.4 For the reaction, N2 + 3H2 2NH3 , the rate of disappearance of H2 is 0.01 mol L-1min-1. The rate of appearance of NH3 would be
(a) 0.01 mol L-1min-1
(b) 0.02 mol L-1min-1
(c) 0.007 mol L-1min-1☑️
(d) 0.002 mol L-1min-1
Q.5 One litre of 2M acetic acid is mixed with one litre of 3M ethyl alcohol to form ester;
CH3COOH + C2H5OH CH3COOC2H5 + H2O
The decrease in the initial rate if each solution is diluted by an equal volume of water would be
(a) 4 times (b) 2 times (c) 0.5 times (d) 0.25 times☑️
Q.6 For the reaction, 2A + B C + D, the rate of reaction increases eight times when concentrations of both A and B are doubled. The rate of reaction increases four times when initial concentration of only B is doubled. The rate expression
for the reaction is
(a) r = k[A]2 [B]
(b) r = k[A][B]2☑️
(c) r = k[A][B]
(d) r = k[A]2 [B]2
Q.7 Which one of the following is correct for exothermic reaction?
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase☑️
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
Q.8 Which one of the following is correct for endothermic reaction?
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase☑️
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
Q.9 Which one of the following is correct for rate of reaction?
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase☑️
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
Q.10 Which one of the following is correct for catalytic hydrogenation?
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase
(c) on increasing temperature rate of reaction first increase then decrease☑️
(d) on increasing temperature rate of reaction increase due to explosive nature
Q.11 Which one of the following is correct for the reaction;
2 NO + O2 → 2NO2
(a) on increasing temperature rate of reaction decrease☑️
(b) on increasing temperature rate of reaction increase
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
Q.12 Which one of the following is correct for combustion of carbon
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
(e) None of these☑️
Q.13 Which one of the following is correct for combustion of carbon
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase
(c) on increasing temperature rate of reaction first increase then decrease☑️
(d) on increasing temperature rate of reaction increase due to explosive nature
Q.14 Which one of the following is correct for photochemical chain reaction (or photochemical reaction)
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
(e) None of these☑️
Q.15 Which one of the following is correct for chain reaction
(a) on increasing temperature rate of reaction decrease
(b) on increasing temperature rate of reaction increase ☑️
(c) on increasing temperature rate of reaction first increase then decrease
(d) on increasing temperature rate of reaction increase due to explosive nature
(e) None of these
Q.16 For a reaction, 2A +B→3Z , if the rate of consumption of A is 2 × 10–4 mol dm–3 s–1
, the rate of formation of Z (in mol dm–3s–1) will be [NET, June-2015(2)]
(a) 3×10-4 ☑️
(b) 2×10-4
(c) 4/3 ×10-4
(d) 4 ×10-4
Q.17 In kinetic study of a chemical reaction, slopes are drawn at different times in the plot of concentration of reactants versus time. The magnitude of slopes with increase of time [NET, June-2017(2)]
(a) remains unchanged
(b) increases
(c) decreases☑️
(d) increases and decreases periodically
Q.18 The rate of a certain reaction increase by 2.3 times when the temperature is raised from 300 K to 310. If k is the rate constant at 300 K then the rate constant at 310 will be equal to
(a) 2 k (b) k (c) 2.3 k☑️ (d) 3 k
Q.19 If the unit of the rate constant of a reaction is L3 mol-3s-1 , the order of the reaction is [NET, June2018(2)]
(a) 1 (b) 2 (c) 3 (d) 4 ☑️
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