Chemical used in salt bridge is________________?
A. KOH
B. KCI
C. KNO3
D. KBr
Electrochemistry
H2 gas in SHE is filled at pressure of___________________?
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______________?
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______________?
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________________?
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 Galvanic cell electrons flow from anode to cathode through__________________?
In Galvanic cell electrons flow from anode to cathode through__________________?
A. external electric circuit
B. salt bridge
C. movement of ions
D. all of the above
In electrolytic cell electricity carries________________?
In electrolytic cell electricity carries________________?
A. spontaneous reaction
B. non-wpontaneous reaction
C. neutralization
D. all of above
Electricity in voltaic cell is produced due to_________________?
Electricity in voltaic cell is produced due to_________________?
A. neutralization
B. oxidation
C. reduction
D. both B & C
Molten NaCl conducts electricity due to the presence of_______________?
Molten NaCl conducts electricity due to the presence of_______________?
A. Free electrons
B. Free molecules
C. Free ions
D. Atoms of Na and Cl
In a galvanic cell________________?
In a galvanic cell________________?
A. Chemical energy is converted into electricity
B. Chemical energy is converted into heat
C. Electrical energy is converted into chemical energy
D. Electrical energy is converted into heat