AP EAMCET Engineering 24 Apr 2017 Shift 1 Paper

Identify the correct statements from the following
a) BOD value of clean water is less than 5 ppm
b) Oxidation of ethene in the presence of Pd2+ catalyst in aqueous medium gives acetic acid
c) Photochemical smog causes damage to plant life
d) Reducing smog is a mixture of smoke, fog and SO2