List of top Organic Chemistry Questions asked in GPAT

Formaldehyde undergoes Grignard reaction to give
Four-membered fully saturated heterocycle containing one oxygen is called
Match the types of terpenes under column I with their respective examples under Column II

Column I
Types of terpenes

Column II 
Examples

AMonoterpenesILycopene
BDiterpenesIICamphor
CSesquiterpenesIIITaxol
DTetraterpenesIVZingiberene

Choose the correct answer from the options given below :
For 1,3-butadiene, there are ____ molecular orbitals for п electrons
This Compound 2,5,8,11,14,17,20,23,26-nona-oxaoctacosan-28-yl p-(butylamino) benzoate is usually known for its activity?
HEPA filters are defined as A or more efficient in removing, from the air, B particles generated by vaporization of the hydrocarbon Emory 3004.
Glucose upon treatment with nitric acid yields
One of the following functional group makes benzoic acid weaker
The hydrogen deficiency index for a compound with molecular formula \(C_{13}H_9N_2O_4BrS\) is
Amine group protection during peptide synthesis can be accomplished by converting the amine to
Formaldehyde undergoes Grignard reaction to give
The total number of possible stereoisomers for 3-bromo-2-butanol are
An epoxy ring can be prepared by
The effect of activation or deactivation of an incoming functional group to an aromatic compound is strongest at
All the following can determine the protein structure except
The dehydration of aldol product of two acetaldehyde molecules through Elcb mechanism affords formation of
Which of the following rearrangement involves migration of a group from carbon to electron deficient nitrogen?
The condensation of an active methylene compound with formaldehyde and an amine to form B-amino carbonyl compound is known as:
The Nitration of quinoline gives a mixture of ___
Which of the following is Anti aromatic?
Which of the following groups stabilizes carbocation in electrophilic aromatic substition?
Walden inversion or complete reversal of stereochemistry occurs in one of the following substitution reaction
Electron releasing groups stabilizes free radicals by:
Antifungal agent 5-fluorocytosine is converted to its active metabolite 5-fluorouracil by one of the following fungal enzyme :
An aldopentose can be converted into aldohexose by: