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1
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Pick up the correct statement.

A
Dipole moment of ammonia is due to orbital dipole and resultant diapole in same direction.
B
$$\mathrm{O}_2, \mathrm{H}_2$$ shown bond diapole due to polarisation.
C
Dipole moment is scalar quantity.
D
In $$\mathrm{BF}_3$$ bond dicopoles are zero but dipole moment is higher.
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Total number of $$\sigma$$ and $$\pi$$ bonds in ethene molecule is

A
$$1 \sigma$$ and $$2 \pi$$ bonds
B
$$5 \sigma$$ and $$1 \pi$$ bonds
C
$$5 \sigma$$ and $$2 \pi$$ bonds
D
$$3 \sigma$$ and $$1 \pi$$ bonds
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of these molecules have non-bonding electron pairs on the cental atom?

$$\mathrm{I}: \mathrm{SF}_4 : \mathrm{II}: \mathrm{ICl}_3 : \mathrm{III}: \mathrm{SO}_2$$

A
II only
B
I and II only
C
I and III only
D
I, II and III
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct statement describing the characteristics of $$\mathrm{C}_2$$ molecule.

A
Bond order $$=2.0 ; \quad$$ Paramagnetic in nature; One sigma and one pi bond formed.
B
Bond order $$=0 \quad \mathrm{C}_2$$ molecule is non-existent.
C
Bond order $$=2.0 ; \quad$$ Diamagnetic in nature; Both bonds formed are pi bonds.
D
Bond order $$=1.5 ; \quad$$ Paramagnetic in nature; Both bonds formed are sigma bonds $$(\sigma)$$.
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