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1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The solubilities of carbonates decrease down the magnesium group due to a decrease in :
A
hydration energy of cations
B
inter-ionic attraction
C
entropy of solution formation
D
lattice energies of solids
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The substance not likely to contain CaCO3 is :
A
calcined gypsum
B
sea shells
C
dolomite
D
a marble statue
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The metallic sodium disolves in liquid ammonia to form a deep blue coloured solution. The deep blue colour is due to formation of :
A
solvated electron, $$e(NH_3)^-_x$$
B
solvated atomic sodium, Na(NH3)y
C
(Na+ + Na-)
D
NaNH2 + H2
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it :
A
absorbs CO2 and increases O2 content
B
eliminates moisture
C
absorbs CO2
D
produces ozone
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