GTU MCQ (Material)| Concept Of Electrochemistry(MCQ) | And GTU MCQ Quiz With Solution
Concept Of Electrochemistry (Q & A)
1. Range of PH form ________ to________ ?
Answer : 1 to 14
2. pH + pOH = ________
Answer : 14
3. 14-pOH = ________
Answer : pH
4. Standard hydrogen electrode immersed in ________ HCL Solution ?
Answer : 1 M
5. which is strong electrolyte ?
Answer : Hcl
{ Example : Hcl , HNO3 , H2O , NaOH }
6. Which is weck electrolyte ?
Answer : Na4OH
{ Example :CH3COOH , Na4OH }
7. Relation between temperature and ionization ?
Answer : Ionization = temperature
8. formula & Definition of pH is ?
Answer : pH = -log10[H3O+]
9. In pH Measurmeunt the bracker [________] represent ?
Answer : Molarity of the in solution
10. Formula & Definition of pOH is ?
Answer : pOH = -log10[OH-]
11. When Solution is neutral ?
Answer : pH = 7
12. When Solution is acidic ?
Answer : pH < 7
13. When Solution is basic?
Answer : pH > 7
14. Acidic Buffer solution made-up of _______
Answer : Weak acid its suitable salt
15. Basic Buffer solution made up of
Answer : Weak base its suitable salt
16. Anode do _______ .
Answer : Oxidation
17. Cathode do _______ .
Answer : Reduetion
18.Principle of Electrochemical
Answer : Convert of chemical energy in to electrical energy
19. In galvanic cell zinc strip act as an
Answer : anode
20. Give anode reaction (select option)
Answer : Zn(s) `\rightarrow` Zn++ +Z e-
21. Select or choose cathode reaction or reduction reaction
Answer : Cu++(aa) + 2e- `\rightarrow` Cu (s)
22. Work of salt bridge
Answer : Provides elecrical neutrality
23. Standard condition of cell
Answer : Temperature - 25°C or 298 k° and Pressure - 1 Atm and Concentration - 1M
24. Full form of SHE.
Answer : Standard hydrogen electrodes
25. First Law of faraday
Answer : M = Z × I × T or M `\alpha` Q
26. What value of R & F in nernst's equation.
Answer : R = 8.314 V.G/K.Mol & F = 96500
27. When I = 1 ampere and t = 1 second then value of m is..
Answer : M = Z
28. Potential value of standard hydrogen electrode is ___________.
Answer : 0.00 V
29. Repersentaion of cathode half cell for SHE.
Answer : 2H+/H₂/pt
30. The solution whose PH constant even after adding small amount of acid or base is called a....
Answer : Buffer solution
31. HCL is a ____________ electrolyte.
Answer : Strong
32. Which reaction takes place at cathode in an electrochemical cell?
Answer : Oxidation half reaction
33. Which are the industrial applications of electrolytes?
Answer : Electro refining, Electroplating, Electrotyping, Extractionof several metal.
34. Solution which resists changes in PH are called..
Answer : Buffer solution
35. Which metal reactivity is least.
Answer : Au, Ag, Pt
36. Electrochemical cell converts chemical energy into..
Answer : Electrical energy.
37. Strong electrolyte is having __________ degree of ionisation than weak electrolyte?
Answer : More
38. In the electroplating the article which require to be coated is connected at ________.
Answer : Anode and cathode
39. _________ ionizes almost completely in its aqueous solution?
Answer : Strong
40. What is used to get accurate value of PH of an aqueous solution?
Answer : PH Meter
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