1. . Assertion : Cu is less reactive than hydrogen.
Reason : Cu2+/Cu EΘ is negative.
(iii) Assertion is true but the reason is false"
2. Assertion : ECell should have a positive value for the cell to function.
Reason : Ecathode more positive or less negative compare to Eanode
(i) Both assertion and reason are true and the reason is the correct explanation of assertion".
3. Assertion : Conductivity of all electrolytes decreases on dilution.
Reason : On dilution number of ions per unit volume decreases.
:
. (i) Both assertion and reason are true and the reason is the correct explanation of assertion.".
4. Assertion : Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted. Reason : For weak electrolytes degree of dissociation increases with dilution of solution. :
(i) Both assertion and reason are true and the reason is the correct explanation of assertion ".
5. Assertion : Mercury cell does not give steady potential.
Reason : In the cell reaction, ions are not involved in solution.
(v) Assertion is false but reason is true".
6. Assertion : Electrolysis of NaCl solution gives chlorine at anode instead of O2.
Reason : Formation of oxygen at anode requires overvoltage.
(i) Both assertion and reason are true and the reason is the correct explanation of assertion ".
7. Assertion : For measuring resistance of an ionic solution an AC source is used.
Reason : Concentration of ionic solution will change if DC source is used.
(i) Both assertion and reason are true and the reason is the correct explanation of assertion".
8. Assertion : Current stops flowing when ECell = 0.
Reason : Equilibrium of the cell reaction is attained
(i) Both assertion and reason are true and the reason is the correct explanation of assertion.".
9. Assertion : EAg+/Ag increases with increase in concentration of Ag+ ions.
Reason : EAg+/Ag has a positive value
?
(ii) Both assertion and reason are true and the reason is not the correct explanation of assertion.".
10. Assertion : Copper sulphate can be stored in zinc vessel.
Reason : Zinc is less reactive than copper
(iv) Both assertion and reason are false".