During electro refining impurities get collected near
anode
cathode
electrolyte
Vaporised
The anode used in the extraction of aluminium is
Graphite rod
Brass
Pure Alumina
platinum
Identify the solution that would cause the bulb to glow brightly when used as the electrolyte in the diagram.
Aqueous ammonia
Sucrose solution
Sulphurous acid
Hydrochloric acid
If a solution of toxic metal ions is subjected to electrolytes, the metal ions will undergo _____ for removal.
Fusion
Oxidation
Reduction
Melting
Which of the following is a weak electrolyte?
Sodium chloride
Benzene
Sodium acetate
Ammonium hydroxide
Can We expect that pure water normally conduct electricity?
will not
will
Sometimes
Rare
Water consists almost entirely of
Ions
Molecules
Atoms
Radicals
Cations are formed by
loss of electrons
gain of electrons
Both of the above
None of the above
Which of the following pairs of metals are extracted only by electrolysis?
Na, Pb
Ca, Cu
Ag, K
Na, Ca
Hoffman's voltameter is used for the electrolysis of:
Water
Sodium oxide
Lead bromide