1
IIT-JEE 1992
MCQ (More than One Correct Answer)
+1
-0.25
The species that do not contain peroxide ions are
A
PbO2
B
H2O2
C
SrO2
D
BaO2
2
IIT-JEE 1990
MCQ (More than One Correct Answer)
+1
-0.25
When zeolite, which is hydrated sodium aluminium silicate is treated with hard water the sodium ions are exchanged with
A
H+ ions
B
Ca++ ions
C
$$SO_4^{--}$$ ions
D
Mg++ ions
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