BCDEFGHIJKLMNOPQRSTUVWXY
1
TimestampScoreName of StudentSchool and City
Q.1. Identify the weak electrolyte from the following :
Q.2. Which of these will act as a non-electrolyte ?
Q.3. During ionisation metals lose electrons, this change can be called :
Q.4. The metallic electrode which does not take part in an electrolytic reaction.
Q.5. When dilute sodium chloride is electrolysed using graphite electrodes, the cation is discharged at the cathode most readily.
Q.6. During electrolysis of NaCl, the gas released at anode is :
Q.7. During the electrolysis of molten lead bromide which of the following takes place :
Q.8. A compound which liberates reddish brown gas around the anode during electrolysis in its molten state is :
Q.9. When fused lead bromide is electrolysed we observe :
Q.10. The vessel in which electrolysis of Lead bromide is carried out is :
Q.11. The ion which is discharged at the cathode during the electrolysis of copper sulphate solutions using copper electrodes as anode and cathode.
Q.12. An aqueous electrolyte consists of the ions mentioned in the list, the ion which could be discharged most readily during electrolysis.
Q.13. During silver plating of an article using potassium argentocyanide as an electrolyte, the anode material should be :
Q.14. The particles present in strong electrolytes are :
2
06/11/2020 18:20:2410 / 14Raman Sharma
St. Dominic Savio College , Lucknow
Aqueous acetic acid
Liquid carbon tetrachloride
OxidationNiH+Hydrogen
Bromine is released at the cathode
Lead (II) bromide
A silver grey deposit at cathode and a reddish brown deposit at anode
Silica crucibleCu2+Cu2+Agmainly ions
3
07/11/2020 21:23:2710 / 14Anushka Saxena
St. Dominic Saivio College, Lucknow
Aqueous acetic acidAcetic acidOxidationPtNa+Chlorine
Lead is deposited at the cathode
Lead (II) bromide
A silver grey deposit at cathode and reddish brown fumes at anode
Silica crucibleCu2+Fe2+Agmainly ions
4
10/11/2020 21:18:229 / 14Lakshay Singh
St. Dominic Savio College/ Lucknow
Aqueous acetic acid
Liquid carbon tetrachloride
OxidationPtNa+Chlorine
Lead is deposited at the cathode
Lead (II) bromide
A silver grey deposit at cathode and a reddish brown deposit at anode
Silica crucibleCu2+H+Femainly ions
5
23/09/2021 21:04:4612 / 14Devina
City Montessori School GN-1 - Lucknow
Aqueous acetic acid
Liquid carbon tetrachloride
OxidationPtNa+Chlorine
Lead is deposited at the cathode
Lead (II) bromide
A silver grey deposit at cathode and reddish brown fumes at anode
Silica crucibleCu2+Cu2+Agmainly ions
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100