Question:
In which of the following molecules, 2\(\pi\) bonds are present?
In which of the following molecules, 2\(\pi\) bonds are present?
Show Hint
In a triple bond, there are two \(\pi\) bonds and one sigma bond, as seen in acetylene (C\(_2\)H\(_2\)).
Updated On: Jan 30, 2026
- C\(_2\)H\(_6\)
- C\(_2\)H\(_4\)
- C\(_2\)H\(_2\)
- C\(_3\)H\(_6\)
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding \(\pi\) bonds.
A \(\pi\) bond is formed by the sideways overlap of p-orbitals. Alkenes and alkynes contain \(\pi\) bonds. In C\(_2\)H\(_2\) (ethyne or acetylene), the carbon-carbon triple bond consists of one sigma bond and two \(\pi\) bonds.
Step 2: Analyzing the options.
(A) C\(_2\)H\(_6\): This is ethane, which contains only sigma bonds.
(B) C\(_2\)H\(_4\): This is ethene, which contains one \(\pi\) bond along with the sigma bond in the carbon-carbon double bond.
(C) C\(_2\)H\(_2\): Correct — This molecule contains two \(\pi\) bonds in the triple bond.
(D) C\(_3\)H\(_6\): This is cyclohexene, which contains one \(\pi\) bond in the carbon-carbon double bond.
Step 3: Conclusion.
The correct answer is (C) C\(_2\)H\(_2\), as it contains two \(\pi\) bonds.
A \(\pi\) bond is formed by the sideways overlap of p-orbitals. Alkenes and alkynes contain \(\pi\) bonds. In C\(_2\)H\(_2\) (ethyne or acetylene), the carbon-carbon triple bond consists of one sigma bond and two \(\pi\) bonds.
Step 2: Analyzing the options.
(A) C\(_2\)H\(_6\): This is ethane, which contains only sigma bonds.
(B) C\(_2\)H\(_4\): This is ethene, which contains one \(\pi\) bond along with the sigma bond in the carbon-carbon double bond.
(C) C\(_2\)H\(_2\): Correct — This molecule contains two \(\pi\) bonds in the triple bond.
(D) C\(_3\)H\(_6\): This is cyclohexene, which contains one \(\pi\) bond in the carbon-carbon double bond.
Step 3: Conclusion.
The correct answer is (C) C\(_2\)H\(_2\), as it contains two \(\pi\) bonds.
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Chemical bonding and molecular structure Questions
- Formation of $\ce{PCl_3}$ is explained on the basis of what hybridisation of phosphorus atom
- What is the geometry of water molecule?
- Number of electrons in the valence orbit of nitrogen in an ammonia molecule are
- The number of moles of electrons passed when a current of is passed through a solution of electrolyte for minutes is:
- The melting point of particles in nano form ___________
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions