1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The structure of diborane (B2H6) contains :
A
four 2c-2e bonds and two 3c-2e bonds
B
two 2c-2e bonds and four 3c-2e bonds
C
two 2c-2e bonds and two 3c-3e bonds
D
four 2c-2e bonds and four 3c-2e bonds
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In silicon dioxide :
A
Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms
B
Each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bonded to two silicon atoms
C
Silicon atoms is bonded to two oxygen atoms
D
there are double bonds between silicon and oxygen atoms
3
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
4
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
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