JEE Main 2014 · 12 Apr · Shift 1 · Chemistry Q56

ChemistrySingle correct+4 / -1Question 56 of 90

Which of the following molecules has two sigma(σ) and two pi(π) bonds ?

\ce{C2H4}

\ce{N2F2}

\ce{C2H2Cl2}

HCN

Answer and worked solution

Official answer: D

H-C≡N: one σ(C-H), and in the triple bond one σ and two π. That is two σ and two π.

JEE Main 2014 · 12 Apr · Shift 1, Chemistry question 56