Thermochemistry - Practice Test

(A) zinc is costlier than tin

(B) zinc has a higher melting point than tin

(C) zinc is more reactive than tin

(D) tin is more reactive than zinc

(C) zinc is more reactive than tin

(A) The reaction is likely to be endothermic

(B) The heat change is equal to the enthalpy change

(C) The reaction is likely to be exothermic

(D) The heat change is equal to the change in temperature

(B) The heat change is equal to the enthalpy change

(A) decomposition reaction

(B) spontaneous oxidation reduction reaction

(C) combination reaction

(D) electrolysis

(D) electrolysis

(A) electrode potential of both electrodes becomes zero

(B) one of electrodes completely vanishes

(C) electrode potential of both electrodes equalizes

(D) the reaction reverses its direction

(C) electrode potential of both electrodes equalizes

(A) larger Zn electrode

(B) larger Cu electrode

(C) lowering the temperature

(D) lowering the concentrations

(A) larger Zn electrode

Thermochemistry - Study Mode