Identify the wrong statement.
(1) Among the constituents of air, O2, H2O, CO2, ozone, nitrogen will not produce green house effect
(2) Hg0, Hg +2, Cu 0, Cu +2, Cd + are poisonous to living system.
(3) Flexible rubber is hardened by cross polymerisation with ZnO.
(4) TiCl4 with (C2 H5 )3 Al is the Ziegler-Natta catalyst used in the polymerisation of olefin.
