2nd PUC Chemistry Series 2 wefruPUC Science 2nd Year Chemistry Series-2 quiz 1 Created on December 02, 2020 By wefru2nd PUC Chemistry Series 2TEST YOUR KNOWLEDGE OF SCIENCE 1 / 1011. If limiting molar conductivity of Ca2+ and Cl– are 119.0 and 76.3 S cm2 mol-1, then the value of limiting molar conductivity of CaCl2 will be 195.3 S cm2 mol-1 271.6 S cm2 mol-1 43.3 S cm2 mol-1 314.3 S cm2 mol-1. 2 / 1012. NH4NC>3 is used in salt bridge because it forms a jelly like material with agar-agar. it is a weak electrolyte. it is a good conductor of electricity. the transport number of NH4+ and NO3– ions are almost equal. 3 / 1013. The reaction, 3ClO– (aq) → ClO3 (aq) + 2Cl– (aq) is an example of Oxidation reaction Reduction reaction Disproportionation reaction Decomposition reaction 4 / 1014. Ni / Ni2+ (1.0 M) // Au3+ (1.0 M) / Au (E° = -0.25 V for Ni2+/Ni; E° = 1.5 V for Au3+/Au) is 1.25 V -1.25 V 1.75 V 2.0 V 5 / 1015. The standard emf of a galvanic cell involving cell reaction with n = 2 is formed to be 0.295 V at 25° C. The equilibrium constant of the reaction would be 1.0 × 1010 2 5 0 6 / 1016. If E°Fe2+/Fe = -0.441 V and E°Fe2+/Fe2+ = 0.771 V, the standard EMF of the reaction,Fe + 2Fe3+ → 3Fe2+ will be 1.212 V 2.212 V 3.212 V 0V 7 / 1017. What will be the fraction of molecules having energy equal to or greater than activation energy, Ea? K A Ae-Ea/Rt e-Ea/Rt 8 / 1018. Which among the following is a false statement? Rate of zero order reaction is independent of initial concentration of reactant. Half life of a third order reaction is inversely proportional to square of initial concentration of the reactant. Molecularity of a reaction may be zero or fraction. None 9 / 1019. Which of the following statements about the catalyst is true?. A catalyst accelerates the rate of reaction by bringing down the activation energy. A catalyst does not participate in reaction mechanism. A catalyst makes the reaction feasible by making ∆G more negative. A catalyst makes equilibrium constant more favourable for forward reaction 10 / 1020. For the reaction N2 + 3H2 → 2NH3 if Δ[NH3]Δt = 2 × 10-4 mol L-1s-1, the value of −Δ[H2]/Δt would be 1 × 10-4 mol L-1s-1 3 × 10-4 mol L-1s-1 1 0 Your score isThe average score is 30% LinkedIn Facebook Twitter 0% Restart quiz