Chemistry Fsc Part 1 Chapter 7 Online Test With Answers

Chemistry Fsc Part 1 Chapter 7 Online Test

Sr. # Questions Answers Choice
1 Delta G tells about Speed Mechanism Feasibility All of these
2 At equilibrium Delta G is Zero Positive Negative Maximum
3 In pressure of catalyst Delta H Increases Decreases Double Unchanged
4 Homogenous catalysts are in Same phase as reactionts Different phase Solid only Gaseous only
5 Energy profile shows Concentration Temperature Energy vs reaction progress Time
6 In an energy profile, peak represents. Reactants Activated complex Products Catalyst
7 Enzyme is a Solid catalyst Homogeneous catalyst Biological catalyst Promoter
8 In energy profile diagram a catalysts. Increse activation energy Decreases activation energy Provide new pathway Both b and c
9 Catalyst usually act in Initialion step Rate determining step Fast step Intermeiate formation
10 Mechanism supports Hess's law Kinetic data Le chatelier's principle Boyle's law
11 Rate determining step controls Overall rate Temperature Volume Final yield
12 Intermediates are Reactants Products Short lived species formed and consumed Stable compounds
13 A reaction mechanism describes Experimental conditions Overall stoichiometry Stepwise molecular events Heat of reaction
14 The lowest stepin a mechanism is Fast step Activation step Rate determining step Initiation step
15 Unit of half life is mol s mol dm-3 J
16 Which order has constant half life First Zero Second Third
17 Half life formula for 1st order reaction is 0.693 /k k x t 1 /k 2 k
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