You are currently viewing NEET UG : General Organic Chemistry (GOC) NEET questions

NEET UG : General Organic Chemistry (GOC) NEET questions

1. The number of sigma (σ) and pi (π) bonds in pent-2-en-4-yne is

(a) 13 σ bonds and no π bond

(b) 10 σ bonds and 3 π bonds

(c) 8 σ bonds and 5 π bonds

(d) 11 σ bonds and 2 π bonds.                                           (NEET 2019)

2. Which of the following molecules represents the order of hybridisation sp2, sp2, sp, sp from left to right atoms?

(a) HC=C — C=CH

(b) CH2=CH — C=CH

(c) CH2=CH — CH=CH2

(d) CH3 — CH=CH — CH3                                               (NEET 2018)

3. The total number of π-bond electrons in the following structure is

(a) 12           (b) 16          (c) 4             (d) 8                                (2015)



(1) sp, sp2, sp3 and sp2     (2) sp, sp3, sp2 and sp3

(3) sp3, sp2, sp2 and sp     (4) sp, sp2, sp2 and sp3


(a) sp, sp2, sp3                  (b) sp3, sp2, sp

(c) sp2, sp, sp3                  (d) sp, sp3, sp2                                     (2008)


(a) 5-formylhex-2-en-3-one

(b) 5-methyl-4-oxohex-2-en-5-al

(c) 3-keto-2-methylhex-5-enal

(d) 3-keto-2-methylhex-4-enal                                                    (2017)

12. The structure of isobutyl group in an organic compound is




(d)                                                           (2013)

13. Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is




(d)                                                          (2013)

14. Which nomenclature is not according to IUPAC system?




(d)                               (2012)


(a) 4-ethyl-3-propylhex-1-ene

(b) 3-ethyl-4-ethenylheptane

(c) 3-ethyl-4-propylhex-5-ene

(d) 3-(1-ethylpropyl)hex-1-ene.                                                            (2011)


(a) trans-2-chloro-3-iodo-2-pentene

(b) cis-3-iodo-4-chloro-3-pentane

(c) trans-3-iodo-4-chloro-3-pentene

(d) cis-2-chloro-3-iodo-2-pentene.                                                        (2011)

17. The IUPAC name of the compound CH3CH = CHC ≡ CH is

(1) Pent-4-yn-2-ene                   (2) Pent-3-en-1-yne

(3) Pent-2-en-4-yne                   (4) Pent-1-yn-3-ene                             (2010)

18. The IUPAC name of the compound having the formula CH = C — CH = CH2 is

(a) 1-butyne-3-ene                     (b) but-1-yne-3-ene

(c) 1-butene-3-yne                     (d) 3-butene-1-yne.                             (2009)


(a) 1-chloro-1-oxo-2,3-dimethylpentane

(b) 2-ethyl-3-methylbutanoyl chloride

(c) 2,3-dimethylpentanoyl chloride

(d) 3,4-dimethylpentanoyl chloride.                                             (2006)