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Revision Quiz | Redox Reactions and Electrochemistry

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Question 1

In the lead-acid battery during charging, the cathode reaction is :

Question 2

A secondary cell is one

Question 3

Which one of the following represents Ostwald’s dilution law for a binary electrolyte

Question 4

The number of coulombs required to deposit 90g of Al is

Question 5

The value of reaction quotient (Q), for the following cell
Zn(s) |Zn2+(0.01 M)| | Ag+ (1.25 M) | Ag (s) is

Question 6

If an element A is placed in electrochemicals series above element B but below element C, then the order of oxidation power of elements

Question 7

What will be the cathode reaction for the following setup:

Question 8

Consider the following electrochemical cell:
Zn(s)+2Ag+(0.04 M)Zn2+(0.28 M)+2Ag(s)
If Ecell0=2.57 V, then e.m.f. of the cell at 298 K, is

Question 9

A variable, opposite external potential (Eext) is applied to the cell
, of potential 1.1 V. When Eext < 1.1 V and Eext> 1.1 V, respectively electrons flow from:

Question 10

The standard reduction potential (Eo) for Fe3+ → Fe for the given reactions is

Question 11

In which of the following compounds, sulphur show maximum oxidation number?

Question 12

When I is oxidized by in alkaline medium, I converts into

Question 13

Which will liberate bromine from a solution of potassium bromide?

Question 14

What is the EAN of [Al(C4O4)3]3- ?

Question 15

The stable bivalency of Pb and trivalency of Bi is
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Mar 30JEE & BITSAT