Question

Match List I with List II.List I
(Molecule)| List II
(Number and types of bond/s between two carbon atoms)
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A.| ethane| I.| one σ-bond and two π-bonds
B.| ethene| II.| two π-bonds
C.| carbon molecule, C2| III.| one σ-bonds
D.| ethyne| IV.| one σ-bond and one π-bond
Choose the correct answer from the options given below:

• A. A-I, B-IV, C-II, D-III
• B. A-IV, B-III, C-II, D-I
• C. A-III, B-IV, C-II, D-I
• D. A-III, B-IV, C-I, D-II

Answer 1

Answer: (C)

A-III, B-IV, C-II, D-I

Answer 2

1. Ethane has a single $\sigma$-bond.
2. Ethene has one $\sigma$-bond and one $\pi$-bond.
3. $C_2$ has two $\pi$-bonds due to unique bonding.
4. Ethyne has one $\sigma$-bond and two $\pi$-bonds.