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Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 38 (10 MCQs)

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1. It is the negative or reducing electrode that releases electrons to the external circuit and oxidizes during and electrochemical reaction.
2. What does electrochemistry deal with?
3. What conditions are necessary to directly measure a standard electrode potential (E$^{o}$) of a metal/metal ion combination?I. A half-cell with that metal electrode immersed in a 1.0 M solution of its ions.II. Coupled to a standard hydrogen electrode under standard conditions.III. Voltmeter between half-cells to measure the potential difference.
4. The reaction, 3ClO$^{-}$ (aq) $\rightarrow$ ClO$_{3}$ (aq) + 2Cl$^{-}$ (aq) is an example of
5. What gas is collected at anode when an aqueous solution of sodium chloride is electrolyzed?
6. An aqueous solution that conducts electricity
7. Why are half-reactions important in electrochemical cells?
8. What unit of measurement do we use to measure electrical potential?
9. The number of d-electrons retained in Fe$^{2+}$ (At. no. Fe = 26) ions are
10. A battery uses a redox reaction to produce a(n) .....
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