Following are some of the facts about a dry cell
I : It is alos called Leclanche cell
II : It is also called Daniel cell
III : Electrolyte is a moist paste of `NH_(4)Cl` and `ZnCl_(2)` in starch
IV : Cathodic reaction is
`2MnO_(2)(s)+2NH_(4)^(+)(aq)+2e^(-)`
`rarrMn_(2)O_(3)(s)+2NH_(3)(g)+H_(2)O(l)`
Select correct facts :

In a zinc manganese dioxide dry cell, the anode is made up of zinc and cathode of a carbon rod surrounded by a mixture of MnO_(2) , carbon NH_(4)Cl and ZnCl_(2) in aqueous base. The cathodic reaction may be represented as: 2MnO_(2) (s) + Zn^(2+) + 2e^(-) rarr ZnMn_(2) O_(4) (s) Let there be 8g MnO_(2) in the cathodic compartment. How many days will the dry cell continue to give a current of 4 xx 10^(-3) ampere ?

In a zinc -manganese dioxide dry cell, the anode is made up of zinc and cathode of a carbon rod surrounded by a mixture of MnO_(2) , carbon, NH_(4)Cl and ZnCl_(2) in aqueous base. The cathodic reaction may be represented as: MnO_(2) + NH_(4)^(+) + e^(-) rarr MnO(OH) + NH_(3) . Let there be 8g MnO_(2) in the cathodic compartment. How many days will the dry cell continue to give a current of 4 xx 10^(-3) ampere ?

In a zinc manganese dioxide dry cell, the anode is madeup of Zn and cathode of carbon rod surrounded by a mixture of MnO_(2) , carbon, NH_(4)Cl , and ZnCl_(2) in aqueous base. The cathodic reaction is : MnO_(2)(s)+Zn^(2+)+2e^(-) rarr ZnMn_(2)O_(4)(s) 8.7g of MnO_(2) is taken in the cathodic compartment. How many days will the dry cell continue to give a current of 9.65xx10^(-3)A ? ( Atomic weight of Mn=55)(Mw of MnO_(2)=87g mol^(-1))

In a zinc manganese dioxide dry cell, the anode is madeup of Zn1 and cathode of carbon rod surrounded by a mixture of MnO_(2) , carbon, NH_(4)Cl , and ZnCl_(2) in aqueous base. The cathodic reaction is : ZnMnO_(2)(s)+Zn^(2+)+2e^(-) rarr ZnMn_(2)O_(4)(s) 8.7g of MnO_(2) is taken in the cathodic compartment. How many days will the dry cell continue to give a current of 9.65xx10^(-3)A ? ( Atomic weight of Mn=55)(Mw of MnO_(2)=87g mol^(-1))

Complete the following reactions . (i) MnO_(4)^(-)(aq)+S_(2)O_(3)^(2-)(aq)+H_(2)O(l) to (ii) Cr_(2)O_(7)^(2-)(aq)+H_(2)S(g)+H^(+)(aq) to

Which of the following molecules are homoatomic ? (i) H_(2)O , (ii) O_(3) , (iii) NH_(3) , (iv) Cl_(2)

The following compounds are heated (i) NH_(4)Cl (ii) NH_(4)NO_(2) (iii) (NH_(4))_(2)Cr_(2)O_(7) (iv) (NH_(4))_(2)CO_(3) . Which of the following statement/s is/are correct ?

Based on entropy Change predict a spontaneous reaction among the following. (A): (NH_(4))_(2)CO_(3)(s) to 2NH_(3)(g)+CO_(2)(g) +H_(2)O(l)and (B):NH_(3)(g)+H_(2)S(g)to NH_(4)HS_((s) .