1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Consider the molecules CH4, NH3 and H2O.

Which of the given statements is false?
A
The H $$-$$ O $$-$$ H bond angle in H2O is smaller than the H $$-$$ N $$-$$ H bond angle in NH3.
B
The H $$-$$ C $$-$$ H bond angle in CH4 is larger than the H $$-$$ N $$-$$ H bond angle in NH3.
C
The H $$-$$ C $$-$$ H bond angle in CH4, the H $$-$$ N $$-$$ H bond angle in NH3, and the H $$-$$ O $$-$$ H bond angle in H2O are all greater than 90o.
D
The H $$-$$ O $$-$$ H bond angle in H2O is larger than the H $$-$$ C $$-$$ H bond angle in CH4.
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
In which of the following pairs, both the species are not isostructural ?
A
Diamond, Silicon carbide
B
NH3, PH3
C
XeF4, XeO4
D
SiCl4, PCl4+
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Decreasing order of stability of O2, O2$$-$$, O2+ and O22$$-$$ is
A
O22$$-$$  >  O2$$-$$  >  O2  >  O2+
B
O2  >  O2+  >  O22$$-$$  >  O2$$-$$
C
O2$$-$$  >  O22$$-$$  >  O2+  >  O2
D
O2+  >  O2  >  O2$$-$$  >  O22$$-$$
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Which of the following options represents the correct bond order ?
A
O2$$-$$  > O2 < O2+
B
O2$$-$$  <  O2  >  O2+
C
O2$$-$$  >  O2  >  O2+
D
O2$$-$$  <  O2  <  O2+
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