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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
Oxazole is prepared by the condensation of a-amino carbonyl compound with
GPAT - 2019
GPAT
Organic Chemistry
Heterocyclic Chemistry
Reaction of an
\(\alpha\)
-halo ester with an aldehyde or ketone in the presence of a base like NaNH
2
gives
\(\alpha\)
,
\(\beta\)
-epoxy carboxylic ester. This reaction is referred as :
GPAT - 2019
GPAT
Organic Chemistry
carbonyl compounds
Gabriel ring closure method is employed for the synthesis of :
GPAT - 2019
GPAT
Organic Chemistry
Amino Acids
Identify the named reaction;
GPAT - 2019
GPAT
Organic Chemistry
Organic Chemistry- Some Basic Principles and Techniques
Dehydration of this dicarboxylic acid to obtain corresponding anhydride is difficult due to stereo chemical arrangement:
GPAT - 2019
GPAT
Organic Chemistry
carbonyl compounds
Kinetically
\( \frac{x}{a(a-x)} \)
kt is the expression for:
GPAT - 2019
GPAT
Organic Chemistry
Kinetic & thermodynamic control
Which among the following correctly defines Diastereomer?
GPAT - 2018
GPAT
Organic Chemistry
Stereochemistry
Which among the following is a non-essential amino acid?
GPAT - 2018
GPAT
Organic Chemistry
Amino Acids
Which compound is most basic?
GPAT - 2018
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
Correct Nomenclature for the following bridged bicyclic ring system is:-
GPAT - 2018
GPAT
Organic Chemistry
Heterocyclic Chemistry
The molecular formula of phenanthrene is:-
GPAT - 2018
GPAT
Organic Chemistry
Pericyclic reactions
In electrophilic substitution of pyridine, reaction of pyridine with $H_2O_2$ in acetic acid leads to formation of:-
GPAT - 2018
GPAT
Organic Chemistry
Heterocyclic Chemistry
Which statement regarding Huckel's rule is FALSE?
GPAT - 2018
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
Appropriate hybridization schemes for the C atoms in molecule $CH_3CO_2H$ are:-
GPAT - 2018
GPAT
Organic Chemistry
Organic Chemistry- Some Basic Principles and Techniques
Anthracene is isomeric with:-
GPAT - 2018
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
Which of the following is a 3,3-sigmatropic reaction which converts a 1,5-diene to an isomeric 1,5 diene?
GPAT - 2018
GPAT
Organic Chemistry
Pericyclic reactions
Galactose and Glucose are:-
GPAT - 2018
GPAT
Organic Chemistry
Carbohydrates
An intermediate 3-Chloroaniline 4, 6-disulphonamide on heating with formic acid yields a compound
GPAT - 2017
GPAT
Organic Chemistry
Heterocyclic Chemistry
Which of the following compounds will be oxidized by $CrO_3$ in acid
GPAT - 2017
GPAT
Organic Chemistry
carbonyl compounds
Which of the following cannot react as a nucleophile
GPAT - 2017
GPAT
Organic Chemistry
Pericyclic reactions
Which of the following compounds absorbs at the longest wavelength
GPAT - 2017
GPAT
Organic Chemistry
carbonyl compounds
When trans-2-butene is treated with bromine an anti-addition of bromine yields meso-2,3-dibromobutane. Select the correct statement regarding the reaction from the following
GPAT - 2017
GPAT
Organic Chemistry
Stereochemistry
Condensation product of Ethyl isopentyl ester of diethylmalonic acid with urea and sodium ethoxide yields
GPAT - 2017
GPAT
Organic Chemistry
Organic Chemistry- Some Basic Principles and Techniques
Which of the following statement is true about following reaction
GPAT - 2017
GPAT
Organic Chemistry
Stereochemistry
The major component of liquid glucose is_____ and is prepared from_______.
GPAT - 2017
GPAT
Organic Chemistry
Carbohydrates
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