Question

when electricity is passed through water ,bubbles of oxygen and hydrogen are respectively released at electrodes connected to........ and ........... terminal of a cell

Answer 1

The answer to fill in the blanks is (positive and negative)

Answer 2

When electricity is passed through water, bubbles of oxygen and hydrogen are respectively released at electrodes connected to the positive and negative terminal of a cell.

Water can be decomposed by transferring electric current through it.  When this occurs, the electrons from the electric current generate an oxidation-reduction reaction.   At one electrode, called the cathode, electrons transfer into the solution and produce a reduction.  At the other electrode, called the anode, electrons neglect the solution forming the circuit, and cause oxidation.