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Friday, 9 October

NEET UG 2018 · Chemistry · Question 63

NEET 2018 Chemistry, question 63

Question 63 of the NEET 2018 paper (code AA) is a Chemistry question from Organic Chemistry - Some Basic Principles and Techniques. Its idea, Hybridisation and Sigma/Pi Bonds in Organic Molecules, was asked twice, in 2018 and 2019, across NEET 2017–2026. The CBSE official answer key gives option 2.

Updated 2026-10-08

Q63 · Chemistry

Which of the following molecules represents the order of hybridisation sp2sp^2, sp2sp^2, sp, sp from left to right atoms ?

  1. 1CH2=CH−CH=CH2\mathrm{CH_2=CH-CH=CH_2}
  2. 2CH2=CH−C≡CH\mathrm{CH_2=CH-C\equiv CH}Official answer
  3. 3HC≡C−C≡CH\mathrm{HC\equiv C-C\equiv CH}
  4. 4CH3−CH=CH−CH3\mathrm{CH_3-CH=CH-CH_3}

Official answer: option 2 · CBSE official answer key

Same idea

Hybridisation and Sigma/Pi Bonds in Organic Molecules, in other papers

NEET asked this idea twice, in 2018 and 2019. The other question below.

  • 2019 Q46The number of sigma (σ) and pi (π) bonds in pent-2-en-4-yne is :One-line MCQ · Easy

Hybridisation and Sigma/Pi Bonds in Organic Molecules: every question and how it was framed

The chapter

Organic Chemistry - Some Basic Principles and Techniques in ten years of NEET

22 questions from 2017–2026, asked in 10 of 10 papers, about 2.1 a paper. Organic Nomenclature alone had 5.

Chapter analysisStudy this chapter

Organic Chemistry - Some Basic Principles and Techniques: questions per paper

0243’173’181’192’201’212’222’233’243’252’26