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1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
What may be expected to happen when phosphine gas is mixed with chlorine gas?
A
PCI3 and HCI are formed and the mixture warms up
B
PCI5 and HCI are formed and the mixture cools down
C
PH3.Cl2 is formed with warming up
D
The mixture only cools down
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Glass is a :
A
super-cooled liquid
B
gel
C
polymeric mixture
D
micro-crystalline solid
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following substances has the highest proton affinity?
A
H2S
B
NH3
C
PH3
D
H2O
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
In case of nitrogen, NCl3 is possible but not NCl5 while in case of phosphorous, PCl3 as well as PCl5 are possible. It is due to :
A
availability of vacant d orbitals in P but not in N
B
lower electronegativity of P than N
C
lower tendency of H - bond formation in P than N
D
occurrence of P in solid while N in gaseous state at room temperature
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