- 1(current)
Q. No.Compound A used as a strong oxidizing agent is amphoteric in nature. It is part of lead storage batteries. Compound A is :
1. PbO2
2. PbO
3. PbSO4
4. Pb3O4
Subtopic: Batteries & Salt Bridge |
71%
Level 2: 60%+
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Identify the change in Mn's oxidation state during the cell reaction in a dry cell while powering a clock.
1. \(+3 \rightarrow+4~\)
2. \(+2 \rightarrow+7~\)
3. \(+4 \rightarrow+3~\)
4. \(+7 \rightarrow+2\)
1. \(+3 \rightarrow+4~\)
2. \(+2 \rightarrow+7~\)
3. \(+4 \rightarrow+3~\)
4. \(+7 \rightarrow+2\)
Subtopic: Batteries & Salt Bridge |
58%
Level 3: 35%-60%
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How many of the following can be used as electrodes in batteries?
(i) Zinc
(ii) Zinc-Mercury amalgam
(iii) Lead
(iv) Graphite
1. (i), (ii), (iii), (iv)
2.(iv), (ii), (iii), (i)
3. (ii), (i), (iii), (iv)
4. (iii), (ii), (i), (iv)
(i) Zinc
(ii) Zinc-Mercury amalgam
(iii) Lead
(iv) Graphite
1. (i), (ii), (iii), (iv)
2.(iv), (ii), (iii), (i)
3. (ii), (i), (iii), (iv)
4. (iii), (ii), (i), (iv)
Subtopic: Batteries & Salt Bridge |
72%
Level 2: 60%+
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Q. No.
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