secondary batteries

What is Battery ? Give one example each of primary battery and secondary battery.

Match the following {:(,"column I" ,, "column II"),((A) ,"Leclanche cell" , (p),"primary battery" ),((B) , "Car battery" , (q),"Secondary battery"),((C ), "Fuel cell" , (r),"converts energy of combustion of" H_(2)","CH_(4) "etc into eletrical energy"),((D) , "NICAD cell" , (s),"Anode :"Zn rarr Zn^(2+)+2e^(-)),(,,,"Cathode :" MnO_(2)+NH_(4)^(+)+e^(-)rarrMn(OH)+NH_(3)),(,,(t),"Cd(s)+2Ni(OH)_(3)(s)rarrCdO(s)+2Ni(OH)_(2)(s)+H_(2)O(I)):}

Secondary data

A secondary amine is