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Chemistry MCQ Question - Electrochemistry

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1. In a galvanic cell




2. The degree of dissociation of week electrolyte increases as




3. Molten NaCl conducts electricity due to the presence of




4. In which of the following reactions occur at cathode?




5. Electricity in voltaic cell is produced due to




6. In electrolytic solution conductance of electricity is due to




7. In electrolytic cell electricity carries




8. Reaction at anode is called




9. In an electrolytic cell cathode provides electrons to




10. In Galvanic cell electrons flow from anode to cathode through




11. Decrease in oxidation number is called




12. For the measurement of standard electrode potential Zn is dipped in




13. Right half cell contains __________ electrode




14. Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in




15. Salt bridge transfers




16. Voltaic cell can be recharged by




17. E0red of an element cab be calculated by comparing it with




18. Temperature for the measurement of standard electrode potential is




19. H2 gas in SHE is filled at pressure of




20. Potential of SHE is considered as




21. Chemical used in salt bridge is




22. Electrode potential of Zn is




23. List of elements based on hydrogen scale is called




24. The element that act as anode always have _______ position in electrochemical cell




25. In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be




26. Greater value of standard reduction potential greater will be tendency




27. Greater value of standard reduction potential smaller will be tendency




28. Secondary cell is




29. Lead accumulators are




30. Density of H2SO4 in lead accumulator is




31. Capacity of one lead accumulator cell is




32. In alkaline battery the anode is made up of




33. The strength of solution of an element whose electrode potential is to be measured is




34. Apparent charge on atom in molecule is




35. Voltaic cell is a




36. In K2Cr2O7 the oxidation number of chromium is




37. Percentage of sulphuric acid in lead accumulator is




38. The reduction potential Zn is




39. The half cells are interconnected through




40. I ? A elements are named as alkali metals because




41. The word Alkali means




42. Formula of Chile saltpetre is




43. The elements which are very abundant in earth crust are




44. The oxides of beryllium BeO is




45. Which element is necessary for normal leaf development?




46. Li is different from its family members due to




47. Carbonates of lithium are not stable like that of sodium due to




48. Nitrates of which pair of elements give different products on thermal decomposition?




49. Which one of the following is not an alkali metal?




50. Which of the following sulphates is not soluble in water?