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1
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+2
-0.5
Specify the coordination geometry around and hybridisation of N and B atoms in a 1 : 1 complex of BF3 and NH3
A
N : tetrahedral, sp3; B : tetrahedral, sp3
B
N : pyramidal, sp3; B : pyramidal, sp3
C
N : pyramidal, sp3; B : planar, sp2
D
N : pyramidal, sp3; B : tetrahedral, sp3
2
IIT-JEE 1999
MCQ (Single Correct Answer)
+2
-0.5
The oxidation number of sulphur in S8,S2F2,H2S respectively, are
A
0, +1 and -2
B
+2, +1 and -2
C
0, +1 and +2
D
-2, +1 and -2

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