Assertion :Statement-I : Absolute value of $E_{r e d}^{0}$ of an electrode cannot be determined. Reason: Statement-II : Neither oxidation nor reduction can take place alone.

Statement-I is true, Statement-II is true; Statement-II is correct explanation for Statement-I.

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Statement-I is true, Statement-II is true; Statement-II is NOT a correct explanation for statement-I

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Statement-I is true, Statement-II is false

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Statement-I is false, Statement-II is true

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Solution

The correct option is A Statement-I is true, Statement-II is true; Statement-II is correct explanation for Statement-I.
The absolute value of $E^{0}$ or E cannot be determined as neither oxidation nor reduction reaction of half-cell occurs alone. Moreover we have to use a reference electrode i.e. an electrode with known value of electrode potential.

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Statement - II: Isoelectronic species should have same charges.

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(p \land \sim q) \land (\sim p \land q)

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(p \land \sim q) \land (\sim p \land q)

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Statement-II : (p \to q) \leftrightarrow (\sim q \to\sim p)

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