Assertion `(A): Cu` liberates `H_(2)(g)` from a dilute solution of `HCl`.
Reason `(R):` Hydrogen is below `Cu` in the electrochemical series.
(a)If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`.
(b)If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`.
(c)If `(A)` is correct, but `(R)` is incorrect.
(d)If both `(A)` and `(R)` are incorrect.

Assertion (A) : Cu gets readily corroded in acidic aqueous solution. Reason (R) : Free energy of the process is positive. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If both (A) and (R) are incorrect.

Assertion (A) : Galvanized iron is protected from Rusting. Reason (R): Zn is less reactive than Fe . (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, (R) is correct.

Assertion (A): At the end of electrolysis using Pt electrodes, an aqueous solution of CuSO_(4) turns colourless. Reason (R): CuSO_(4) changes to Cu(OH)_(2) during electrolysis. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, (R) is correct.

Assertion (A) : Group- 15 -doped crystal of Si are called n -type semiconductors. Reason (R ) : Neutrons are responsible for the semi-conducting properties. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) (c)If (A) is correct, but (R) is incorrect. (d)If both (A) is incorrect, but (R) is correct.

Assertion (A): I_(2) can displace Cl_(2) form NaClO_(3) . Reason (R ): I is more electronegative than CI. If both (A) and (R) are correct, and (R) is the correct explanation of (A) If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect, but (R) is correct.

Assertion (A): The flourine has lower reactivity. Reason (R ): F-F bond has low bond dissociation energy. If both (A) and (R) are correct, and (R) is the correct explanation of (A) If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect, but (R) is correct.

Assertion (A): Micelles are formed by surfactant molecules above the critical micellization concentration (CMC) . Reason(R): The conductivity of a solution having surfactant molecules decreases sharply at the CMC . (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A). (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A). (c)If (A) is incorrect, but (R) is correct. (d)If both (A) and (R) are incorrect.

Assertion(A): Fruit formation process shows increase in the rate with passage of time. Reason(R): Hydrolysis of these ester is homogeneous autocatalytic reaction. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) (b)If both (A) and (R) are correct, but (R) is the correct explanation of (A). (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, but (R) is correct.

Assertion (A) : In a Daniell cell, if the concentration of Cu^(2+) and Zn^(2+) ions are doubled, the EMF of the cell will be doubled. Reason (R) : If the concentration of ions in contact with metals is doubled, the electrode potential is doubled. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If (A) is incorrect, (R) is correct.

Assertion (A): Na^(o+) ions are discharged in preference to H^(o+) ions at Hg cathode. Reason (R) : The nature of the cathode can affect the order of discharge of ions. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d) If (A) is incorrect, (R) is correct.