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1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The correct order of the thermal stability of hydrogen halides (H – X) is :
A
HI > HBr > HCl > HF
B
HF > HCl > HBr > HI
C
HCl < HF > HBr < HI
D
HI > HCl < HF < HBr
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is :
A
zero
B
two
C
one
D
three
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in :
A
exhibiting maximum covalency in compound
B
exhibiting amphoteric nature in their oxides
C
forming covalent halides
D
forming polymeric hydrides
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Which one the following statement regarding helium is incorrect?
A
It is used to fill gas balloons instead of hydrogen because it is lighter and non–inflammable
B
It is used in gas – cooled nuclear reactors
C
It is used to produce and sustain powerful superconducting reagents
D
It is used as cryogenic agent for carrying out experiments at low temperatures
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