TS EAMCET 4 May 2018 Shift 2 Solved Paper

Identify the correct statements from the following
a) In the oxidation of oxalic acid with KMnO4 in acid medium, Mn2+ acts as auto catalyst
b) CdS colloidal solution can be precipitated by the addition of Cl−ions.
c) The gold numbers of three protective colloids (A,B,C) is0.03,25,0.25 respectively. Their protective power followsthe order A>C>B
d) Physisorption in an irreversible process