The electrode where there is gain of electrons is called ______.

(a)

cathode

(b)

anode

(c)

electrode

(d)

both anode and electrode

The zinc - copper cell has emf of _______.

(a)

1V

(b)

2.1 V

(c)

1.1V

(d)

-1.1 V

For gases, the standard emf depends on _______.

(a)

1 atm pressure

(b)

1M solution

(c)

temperature of 25°C

(d)

both 1atm pressure and temperature of 25°C

SHE is _______.

(a)

Standard Helium Electrode

(b)

Standard Hydrogen Electrode

(c)

Standard Mercury Electrode

(d)

none of these

The feasibility of a redox reaction can be predicted with the help of ________.

(a)

reduction potential

(b)

oxidation potential

(c)

electrochemical series

(d)

standard emf