Chemistry Fsc Part 1 Online Test With Answers

Chemistry Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 Which of the following statemetns correctly describes the effect of temperature on the equilirium constant. Kc is directly proportional to temperature Kc is inversely proportional to temperature. Kc depends on the enthalpy change of the reaction Temperature has no effect on the value of Kc
2 A saturted solution represents a dynamic equilibrium Macroscopically, the concentration of dissolved solute is constant, Microscopically this occurs because. No more solute particles are dissolving The rate of dissolution of solute is zero Solute particles are dissolving and precipitating at the same rate All solute particles have dissolved
3 Delta G tells about Speed Mechanism Feasibility All of these
4 At equilibrium Delta G is Zero Positive Negative Maximum
5 In pressure of catalyst Delta H Increases Decreases Double Unchanged
6 Homogenous catalysts are in Same phase as reactionts Different phase Solid only Gaseous only
7 Energy profile shows Concentration Temperature Energy vs reaction progress Time
8 In an energy profile, peak represents. Reactants Activated complex Products Catalyst
9 Enzyme is a Solid catalyst Homogeneous catalyst Biological catalyst Promoter
10 In energy profile diagram a catalysts. Increse activation energy Decreases activation energy Provide new pathway Both b and c
11 Catalyst usually act in Initialion step Rate determining step Fast step Intermeiate formation
12 Mechanism supports Hess's law Kinetic data Le chatelier's principle Boyle's law
13 Rate determining step controls Overall rate Temperature Volume Final yield
14 Intermediates are Reactants Products Short lived species formed and consumed Stable compounds
15 A reaction mechanism describes Experimental conditions Overall stoichiometry Stepwise molecular events Heat of reaction
16 The lowest stepin a mechanism is Fast step Activation step Rate determining step Initiation step
17 Unit of half life is mol s mol dm-3 J
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