The natural tendency of the water can be reversed by applying ________ to the salty water part
a) Low pressure
b) High pressure
c) Low temperature
d) High temperature
Chemistry Multiple Choice Questions
The energy of the fuel cells ___________
a) Can be recharged
b) Cannot be recharged
c) Is stored
d) Cannot be said
In primary cells reaction is not reversible
a) True
b) False
The emf of the Weston standard cell is __________ at 20oC
a) 16.7989V
b) 5.2572V
c) 1.0183V
d) 0V
___________is the device used to measure the emf of the cell
a) Voltmeter
b) Potentiometer
c) Ammeter
d) Multimeter
The calomel electrode is only used as_________
a) Oxidising electrode
b) Reducing electrode
c) Depends on the half cell
d) Cannot be said
For 1N KCL standard reduction potential in the calomel electrode is__________
a) 0.28V
b) 0.25V
c) 0.5V
d) 1V
In standard calomel electrode, for saturated KCL solution, electrode potential is__________
a) 0.897V
b) 0.456V
c) 0.3512V
d) 0.2415V
If the standard hydrogen electrode is used as the reduction electrode, then the emf is given by__________
a) Ered = -Eo + (5/n ) log10 [H+].
b) Ered = -Eo – (0.0591/n ) log10 [H+].
c) Ered = Eo + (0.0591/n ) log10 [H+].
d) Ered = -Eo + (0.0591/n ) log10 [H+].
Which of the following is the correct equation?
a) E = Eo [(2.303RT)/nF] log10 [H+].
b) E = Eo +[(2.303RT)/nF] log10 [H+].
c) E = Eo – [(2.303RT)/nF] log10 [H+].
d) E = Eo/ [(2.303RT)/nF] log10 [H+].