Conformations of ethane and n-butane: stability and energy order

1. A.
   II $<$ III $<$ IV $<$ I
2. B.
   I $<$ IV $<$ III $<$ II
3. C.
   II $<$ IV $<$ III $<$ I
4. D.
   I $<$ III $<$ IV $<$ II

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1. A.
   Ethane has infinite number of conformations
2. B.
   The dihedral angle in staggered conformation is $60^{\circ}$
3. C.
   Eclipsed conformation is the most stable conformation.
4. D.
   The conformations of ethane are interconvertible to one-another

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1. A.
   Both Statement I and Statement II are false
2. B.
   Statement I is false but Statement II is true
3. C.
   Statement I is true but Statement II is false
4. D.
   Both Statement I and Statement II are true

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