s-Block Elements
2009
Q1
JEE Advanced
MSQ
14 Mar 2026
The compound(s) formed upon combustion of sodium metal in excess air is (are)
A.
Na2O2
B.
Na2O
C.
NaO2
D.
NaOH
1998
Q2
JEE Advanced
MSQ
14 Mar 2026
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
1992
Q3
JEE Advanced
MSQ
14 Mar 2026
The species that do not contain peroxide ions are
A.
PbO2
B.
H2O2
C.
SrO2
D.
BaO2
1990
Q4
JEE Advanced
MSQ
14 Mar 2026
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