1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Which one of the following species is diamagnetic in nature?
A
$$He_2^+$$
B
H2
C
$$H_2^+$$
D
$$H_2^-$$
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The bond order in NO is 2.5 while that in NO+ is 3. Which of the following statements is true for these two species?
A
Bond length in NO+ is greater than in NO
B
Bond length is unpredictable
C
Bond length in NO+ in equal to that in NO
D
Bond length in NO is greater than in NO+
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The correct order of bond angles (smallest first) in H2S, NH3, BF3 and SiH4 is
A
H2S < SiH4 < NH3 < BF3
B
H2S < NH3 < BF3 < SiH4
C
H2S < NH3 < SiH4 < BF3
D
NH3 < H2S < SiH4 < BF3
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Which one of the following has the regular tetrahedral structure?
(Atomic nos : B = 5, S = 16, Ni = 28, Xe = 54)
A
XeF4
B
[Ni(CN)4]2-
C
$$BF_4^-$$
D
SF4
JEE Main Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12