Chemistry Fsc Part 1 Online Test With Answers

Chemistry Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 At equilirbium  Products dominate Reactants dominate Forward and reverse rates are zero Forward rate = reverse rate
2 Dynamic equilibrium occurs. In open systems Only in gases In closed systems Only at low temperature
3 Which is NOT a feature of dynamic equilibrium. Closed system Constant Temperature Uequal reaction rates No net change
4 At equilirbium the observabel properties. Keep changing Fluctuae randomly Remain constant Oscillate
5 Which statement is true at dynamic equilibrium. No reactio is occurring Concentrations are changing Rates of forward and reverse reactions are equal Rate forward reaction < reverse
6 Dynamic equilirbrium is attained when Forward reaction stops Reverse reaction stops Forward and reverse reactions continue at equal rates Concentration of products become zero
7 Combustion of methane is. Reversible  Endothermic Irreversible Equilibrium process
8 In a reversible reaction. Products do not reform reactants Rate of forward reaction is always higher Both forward and reverse reactions occur Products are in excess
9 Whcih of the following reactions reaches equilibrium Reversible Irreversible Combustion Neutralization
10 Which of the following is an irreversible reaction. Haber process Precipitation of Ag Cl Synthesis of ammonia Esterification
11 A reversibel reaction is one which  Proceeds to completion Occurs only in one direction  Proceeds in both directions Has no products
12 The reversibel reation cannot be achieved in Open system Closed system Both a and b None of these
13 Which one of the following is not an example of reversible reaction. Formation of ammonia Foramtion ow water Decomposition of PCl5 Decomposition of NO2
14 For a specific reaction the valu eof the equilibrium constant, Kc? Always remains the same at differrent reaction conditions Increases if the concentration of one ofthe product is increased Changes with changes in the temperature Increasees if the concentration of one of the ratants is increased
15 Consider the equilibrium 2H2 +O2................ 2H2O. If the concentration of H2O is increased, the concentrations of H2 and O2 will Increses Decrease Remain the same Change irregularly
16 Kc = 0.040 at 450 oC for the teh given reaction, evaluate Kp for the reaction.
Pcl5        ......................... PCl2 + Cl2		 0.40 2.4 0.64 0.052
17 Consider the gas phase equilibrium sysem represented by teh equation 2 H2O................ 2H2+O2 Givent that the forward reactio is endothermic, which of the following chagnes will decrease the equilibrium amount of H2O. Adding more oxygen Adding a solid phase catalyst Decreasing the volume of the container  Increaseing the temperature at constant pressure
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