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Free Online Mock Chemistry Multiple Choice Test on Chemical Kinetics
Sub Category : Chemical Kinetics Test : 11 Time Left :
1) In the formation of sulphur trioxide by contact process, 2SO2 + O2->2SO3,the rate of reaction was measured as -d[O2]/dt=2.5Ã-104 mol L-1 s-1, The rate of reaction expressed in terms of SO2 will be (1)-5.0Ã-10-4 mol L-1 s-1 (2)-1.25Ã-10-4 mol L-1 s-1 (3)2.5Ã-10-4 mol L-1 s-1 (4)5.00Ã-10-4 mol L-1 s-1.
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2) The rate of the reaction N2(g)+3H2(g)->2NH3(g) was measured as [NH3]=2Ã-10-4 mol L-1 sec-1.The rates of the reaction expressed in terms of N2 and H2 are Rates in terms of N2 Rate in terms of H2 (mol L-1 sec-1) (mol L-1 sec-1) (1) 1 Ã- 10-4 1 Ã- 10-4 (2) 3 Ã- 10-4 1 Ã- 10-4 (3) 2 Ã- 10-4 1 Ã- 10-4 (4) 2 Ã- 10-4 2 Ã- 10-4
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3) For the reaction N2+3H2 Reversable arrow 2NH3, The rate of change of concentration for hydrogen is 0.3Ã-10-4 ms-1.The rate of change of concentration of ammonia is (1)-0.2Ã-10-4 (2)0.2Ã-10-4 (3)0.1Ã-10-4 (4)0.3Ã-10-4.
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4) For a chemical reaction 2X+Y->Z, the rate of appearance of Z is 0.05 mol L-1 per min. The rate of disappearance of X will be (1)0.05 mol L-1 per hour (2)0.05 mol L-1 per min (3)0.1 mol L-1 min-1 (4)0.25 mol L-1 per min.
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5) A gaseous reaction A2(g)->B(g)+1/2C(g) Shows increase in pressure from 100 mm to 120 mm in 5 minutes. The rate of disappearance of A2 is (1)4 mm min-1 (2)8 mm min-1 (3)16 mm min-1 (4)2 mm min-1.
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