Hello, here I am providing you the questions of the electrochemistry head for IIT JEE as under:

Question 1: Substances which do not conduct electricity in solid state but in question solution is known as..
a. insulators
b. conductors
c. electrolytes
d. strong acids

Question 2: Which of the following substances is not an electrolyte?
a. Common salt
b. Sulphuric Acid
c. Acetic Acid
d. Glucose

Question 3: Which of the following substances is not a non-electrolyte?
a. Gold
b. Mercury
c. Graphite
d.Ammonium Chloride

Question 4: Which of the following compounds will not conduct electricity in its aqueous solution?
a. Carbontetrachloride
b. Silver chloride
c. Sodium acetate
d. Sulphuric Acid

Question 5: Which of the following electrolytes is not strong one?
a. HCl
b. NaCl
c. H2SO4
d. CH3COOH

6.One mole of electrons is same as

faraday
coulomb
ampere
none of these

7.The decomposition of an electrolyte by passing electric current depends upon

energy of electrolysis
quantity of current which is passed
shape of the electrode
size of the container8.Which of the following is the best reducing agent in aqueous solution?

Li
Cs
Rb
K

9.If mercury is used at cathode during the electrolysis of aqueous NaCl the ions discharged at the cathode are

hydroxide
chloride
sodium
none of these

10.Salt Bridge is used because it

forms insoluble precipitates with the electrolytes in the two half cells
enhances the flow of electrons by overcoming liquid junction potential
maintains the electrical neutrality of the two half cells
provides the extra ions

11.On passing one faraday of electricity through molten lead (II) bromide, amount of bromine obtained is

5 gm mole
3 mole
1 mole gm atom
1 gm equivalent

12.During the electrolysis of fused sodium chloride, the anodic reaction is

reduction of chloride ions
oxidation of sodium ions
oxidation of chloride ions
None of the above

13.More electropositive elements have more

negative reduction potential
positive oxidation potential
tendency to loose electrons
positive reduction potential

14.In the concentration cells the electrical energy is due to

transfer of a substance from one solution to another solution
temperature
reduction of fuel
chemical action

15.The most important condition for a galvanic cell is

the two half cells should be connected internally by some device
the electrolytes should taken in a separate container
the electrolytes should not have physical contact
the electrodes should be inert