1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The increasing order of stability of the following free radicals is
A
$${({C_6}{H_5})_2}\mathop C\limits^ \bullet H$$ < $${({C_6}{H_5})_3}\mathop C\limits^ \bullet$$ < $${(C{H_3})_3}\mathop C\limits^ \bullet $$ < $${(C{H_3})_2}\mathop C\limits^ \bullet H$$
B
$${(C{H_3})_2}\mathop C\limits^ \bullet H$$ < $${(C{H_3})_3}\mathop C\limits^ \bullet $$ < $${({C_6}{H_5})_2}\mathop C\limits^ \bullet H$$ < $${({C_6}{H_5})_3}\mathop C\limits^ \bullet$$
C
$${(C{H_3})_2}\mathop C\limits^ \bullet H$$ < $${(C{H_3})_3}\mathop C\limits^ \bullet $$ < $${({C_6}{H_5})_3}\mathop C\limits^ \bullet$$ < $${({C_6}{H_5})_2}\mathop C\limits^ \bullet H$$
D
$${({C_6}{H_5})_3}\mathop C\limits^ \bullet$$ < $${({C_6}{H_5})_2}\mathop C\limits^ \bullet H$$ < $${(C{H_3})_3}\mathop C\limits^ \bullet $$ < $${(C{H_3})_2}\mathop C\limits^ \bullet H$$
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Increasing order of stability among the three main conformations (i.e. Eclipse, Anti, Gauche) of 2-fluoroethanol is
A
Eclipse, Gauche, Anti
B
Gauche, Eclipse, Anti
C
Eclipse, Anti, Gauche
D
Anti, Gauche, Eclipse
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca2+ ion?
A
Six
B
Three
C
One
D
Two
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Fluorobenzene (C6H5F) can be synthesized in the laboratory
A
by heating phenol with HF and KF
B
from aniline by diazotisation followed by heating the diazonium salt with HBF4
C
by direct fluorination of benzene with F2 gas
D
by reacting bromobenzene with NaF solution
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