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Graduate Pharmacy Aptitude Test
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Organic Chemistry
List of top Organic Chemistry Questions asked in Graduate Pharmacy Aptitude Test
Among the following organic compounds, the one that is non‐aromatic is:
GPAT - 2022
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
The major product formed in the above reaction is:
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GPAT
Organic Chemistry
Polycyclic aromatic hydrocarbons
Insertion of a oxygen in a carbonyl compound to form an ester is known as:
GPAT - 2022
GPAT
Organic Chemistry
carbonyl compounds
Controlled alkylation of a ketone via an enamine intermediate is named as:
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GPAT
Organic Chemistry
Kinetic & thermodynamic control
Identify the major product formed in the above reaction from the four choices listed below
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GPAT
Organic Chemistry
Stereochemistry
Identify the product formed when 2‐cholestene is treated with Br
2
:
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GPAT
Organic Chemistry
Pericyclic reactions
The set of specific reagents used in the above‐mentioned synthesis of m‐(n‐Butyl)toluene from n‐propyl m‐tolyl ketone is:
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GPAT
Organic Chemistry
Pericyclic reactions
In the case of halogenation reaction of alkanes, abstract of primary hydrogen yields a primary radical, and abstract of secondary hydrogen yields a secondary radical.
\(\mathrm{R-H} + \mathrm{Br}^- \longrightarrow \mathrm{R}^- + \mathrm{Br-H}\)
The above example is of:
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GPAT
Organic Chemistry
carbonyl compounds
Identify which statement among the following is true in case of E2 and SN2:
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GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
Identify the correct descending order of strength of nucleophilic solvents from the below‐given options:
GPAT - 2022
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
When 100 mL of 0.1 M sodium hydroxide solution is added to 100 mL of 0.1 M acetic acid (Ka = 1.82 x 10
-5
), pH of the solution will be _____ .
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GPAT
Organic Chemistry
Solutions
Match List I with List II, and
List I
Volumetric Solution
List II
Primary Standard
A
0.1 M Iodine
I
Potassium iodate
B
0.1M Sodium thiosulphate
II
Potassium bromate
C
0.1M Sodium hydroxide
III
Potassium hydrogen phthalate
D
0.1M Perchloric acid
IV
Arsenic trioxide
V
Potassium hydrogen phthalate
Choose the correct answer from the options given below:
GPAT - 2022
GPAT
Organic Chemistry
Solutions
When alkenes are epoxidised with optically active peracids, optically active epoxides are formed. Under the same defined conditions, epoxidation of E‐but‐2‐ene by peroxycamphoric acid affords unequal yields of enantiomeric epoxides.However, a similar epoxidation of Z‐but‐2‐ene can only afford________ .
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GPAT
Organic Chemistry
Different classes of compounds
HEPA filters are defined as A or more efficient in removing, from the air, B particles generated by vaporization of the hydrocarbon Emory 3004.
GPAT - 2021
GPAT
Organic Chemistry
Polycyclic aromatic hydrocarbons
Amine group protection during peptide synthesis can be accomplished by converting the amine to
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GPAT
Organic Chemistry
Amino Acids
The total number of possible stereoisomers for 3-bromo-2-butanol are
GPAT - 2021
GPAT
Organic Chemistry
Stereochemistry
This Compound 2,5,8,11,14,17,20,23,26-nona-oxaoctacosan-28-yl p-(butylamino) benzoate is usually known for its activity?
GPAT - 2021
GPAT
Organic Chemistry
Amino Acids
For 1,3-butadiene, there are ____ molecular orbitals for п electrons
GPAT - 2021
GPAT
Organic Chemistry
Pericyclic reactions
Match the types of terpenes under column I with their respective examples under Column II
Column I
Types of terpenes
Column II
Examples
A
Monoterpenes
I
Lycopene
B
Diterpenes
II
Camphor
C
Sesquiterpenes
III
Taxol
D
Tetraterpenes
IV
Zingiberene
Choose the correct answer from the options given below :
GPAT - 2021
GPAT
Organic Chemistry
Stereochemistry
All the following can determine the protein structure except
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GPAT
Organic Chemistry
Amino Acids
Four-membered fully saturated heterocycle containing one oxygen is called
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GPAT
Organic Chemistry
Heterocyclic Chemistry
Glucose upon treatment with nitric acid yields
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GPAT
Organic Chemistry
Carbohydrates
The effect of activation or deactivation of an incoming functional group to an aromatic compound is strongest at
GPAT - 2021
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
The dehydration of aldol product of two acetaldehyde molecules through Elcb mechanism affords formation of
GPAT - 2021
GPAT
Organic Chemistry
Different classes of compounds
An epoxy ring can be prepared by
GPAT - 2021
GPAT
Organic Chemistry
Polycyclic aromatic hydrocarbons
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