to a chloride salt, colourless fumes are evolved but in
case of iodide salt, violet fumes come out. This is because
(a) 
reduces
HI to 
(b) HI is of violet colour,
(c) HI gets oxidised to
(d) HI changes to 
Answer:
(c) Hydrogen iodide (HI) is more stronger oxidising agent than
,. So, it reduces I to 
and
itself oxidises to
. Colour of is violet hence on adding cone.
to HI it gets oxidised to
.
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