Q)
(chatquestion)...16.
Pick ou
(3) K,SO,
(4) MNSO,
(1) K
8.
Colourless solution of the following four salts are
placed separately in four different test tubes and a
strip of copper is dipped in each one of these.
Which solution will turn blue?
su
(2) Irc
(3) Pe
(1) KNO,
(3) Zn(NO,),
(2) AGNO,
(4) ZNSO,
(4) Ir
Cu+ conc. HNO,(hot):
of nitrogen); then X is:
(1) N,O
9.
Cu(NO), +X (oxide T. CrO,
3.
is :-
(2) NO2
(4) N,O3
(1) A
(3) NO
(3) A
18...(8 and 9 both?)
...
