These question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses : Assertion : For a cell reaction ` Zn(s) + Cu^(2+) (aq) rarr Zn^(2+) (aq) + Cu (s)` , at the equilibrium, voltmeter gives zero reading. Reason : At the equilibrium, there is no change in the concentration of `Cu^(2+)` and `Zn^(2+)` .A. If both assertion and reason are correct and reason is correct explanation for assertion.B. If both assertion and reason are correct but reason is not correct explanation for assertion.C. If assertion is correct but reason is incorrect.D. If assertion and reason both are incorrect.

These question consist of two statements each, printed as Assertion an

1.	These question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses : Assertion : For a cell reaction ` Zn(s) + Cu^(2+) (aq) rarr Zn^(2+) (aq) + Cu (s)` , at the equilibrium, voltmeter gives zero reading. Reason : At the equilibrium, there is no change in the concentration of `Cu^(2+)` and `Zn^(2+)` .A. If both assertion and reason are correct and reason is correct explanation for assertion.B. If both assertion and reason are correct but reason is not correct explanation for assertion.C. If assertion is correct but reason is incorrect.D. If assertion and reason both are incorrect.
Answer» Correct Answer - A (a) It is the correct answer.

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Define molar conductivity of a solution and explain how molar conductivity changes with change in concentration of a solution for a weak and a strong electrolyte.
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Based on the data given below, the correcy order of reducing power is: `Fe_((aq.))^(3+) + e rarr Fe_((aq.))^(2+), E^(@) = +0.77 V` `Al_((aq.))^(3+) + 3e rarr Al_((s)), E^(@) = -1.66 V` `Br_(2(aq.)) + 2e rarr 2Br_((aq.))^(-), E^(@) = +1.08 V`A. `Br^(-) lt Fe^(2+) lt Al`B. `Fe^(2+) lt Al lt Br^-`C. `Al lt Br^(-) lt Fe^(2+)`D. `Al lt Fe^(2+) lt Br^(-)`
What are elementary reactions ?

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