List of elements based on hydrogen scale is called________________?
(A) periodic table
(B) groups
(C) periods
(D) electrochemical series
H2 gas in SHE is filled at pressure of___________________?
(A) 760mm of Hg
(B) 750mm of Hg
(C) 780mm of Hg
(D) 800mm of Hg
Voltaic cell can be recharged by______________?
(A) by addition of fresh solution
(B) by replacing external circuit with external source of electricity
(C) by removal of solution
(D) by heating it
Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in______________?
(A) Daniel cell
(B) Downs cell
(C) Voltaic cell
(D) Nelsons cell
For the measurement of standard electrode potential Zn is dipped in________________?
(A) 1 M ZnO solution
(B) 1 M ZnSO4 solution
(C) 1.5 M ZnSO4 solution
(D) 0.1 M ZnSO4 solution
In electrolytic solution conductance of electricity is due to _____________________?
(A) free electrons
(B) ions
(C) metals
(D) electrodes
The degree of dissociation of week electrolyte increases as________________?
(A) Pressure increases
(B) Dilution decreases
(C) Dilution increases
(D) None
Which of the following is true in the case of Zn-Cu cell ?
(A) The flow of electrons takes place from copper to zinc
(B) E0red of copper electrode is less than that of zinc electrode
(C) Zinc acts as an anode and copper as cathode
(D) All are correct
Which of the following cell is not rechargeable ?
(A) Lead storage battery
(B) Silver oxide cell
(C) Fuel cell
(D) Ni-Cd cell