1
IIT-JEE 2006
MCQ (More than One Correct Answer)
+5
-1.25
MgSO4 on reaction with NH4OH and Na2HPO4 forms a white crystalline precipitate. What is its formula?
A
Mg(NH4)PO4
B
Mg3(PO4)2
C
MgCl2.MgSO4
D
MgSO4
2
IIT-JEE 1998
MCQ (More than One Correct Answer)
+2
-0.5
Highly pure dilute solution of sodium in liquid ammonia
A
shows blue color
B
exhibits electrical conductivity
C
produces sodium amide
D
produces hydrogen gas
3
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
4
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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