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Organic Chemistry
List of top Organic Chemistry Questions
Consider the following
1
H-NMR (400 MHz, DMSO-d
6
) data of a compound :
δ in ppm: 3.85 (s, 6H), 6.73 (t, J = 2.2 Hz, 1H), 7.1 (d, J = 2.2 Hz, 2H), and 13.05 (brs, 1H).
The compound is
GATE CY - 2024
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Organic Chemistry
NMR and ESR spectroscopy
In the given reaction sequence, the amount of R produced (in g) is ______.
(Given: molar mass (in g mol
-1
) of H = 1, C = 12, N = 14, O = 16, and S = 32)
(rounded off to two decimal places)
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Organic Chemistry
Basic mechanistic concepts
Consider the following reaction sequence. The correct option(s) is (are)
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Organic Chemistry
Concepts of multistep synthesis
The correct statement(s) about the relationship for the H-atoms in the following compounds is (are) :
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Organic Chemistry
Chirality & symmetry of organic molecules with or without chiral centres
The complex(es) that exhibit(s) optical isomerism is (are)
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Organic Chemistry
Geometrical isomerism and optical isomerism
The correct option(s) that give(s) P as the major product is (are)
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Organic Chemistry
Basic mechanistic concepts
The major products X and Y in the following reaction sequence are
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Organic Chemistry
Relative stereochemistry in compounds having more than one stereogenic centre
The major products E and F in the following reaction sequence are
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Organic Chemistry
Synthesis, reactions, mechanisms and selectivity
In the following reactions, the structures of I, II, and III, respectively, are
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Organic Chemistry
Methods of determining reaction mechanisms through kinetics
The reaction(s) that yield(s) 2-methylquinoline as the major product is (are)
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Organic Chemistry
Reactions of furan, pyrrole, thiophene, pyridine, indole, quinoline and isoquinoline
The correct statement(s) for decalin is (are)
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Organic Chemistry
Relative stereochemistry in compounds having more than one stereogenic centre
The product M in the following reaction is
GATE CY - 2024
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Organic Chemistry
Synthesis, reactions, mechanisms and selectivity
Among the following, the chiral compound is
GATE CY - 2024
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Organic Chemistry
Chirality & symmetry of organic molecules with or without chiral centres
The major product in the following reaction sequence is
GATE CY - 2024
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Organic Chemistry
Basic mechanistic concepts
A = Br
2
, B = KOH, C = NaNH
2
Which heterocyclic ring is fused to a steroidal nucleus in Danazol?
GPAT - 2023
GPAT
Organic Chemistry
Organic Chemistry
The C-2 epimer of D-glucose is:
GPAT - 2023
GPAT
Organic Chemistry
Carbohydrates
Select the correct product A of the above-given reaction from the four choices given below:
GPAT - 2023
GPAT
Organic Chemistry
Organic Chemistry
The tendency of carbon to loose electrons even at the expense of gaining positive chargeIdentify intermediate forms in following substitution reaction:
GPAT - 2023
GPAT
Organic Chemistry
Organic Chemistry
E2 elimination converts neomethyl chloride into a mixture of the following compounds:
GPAT - 2023
GPAT
Organic Chemistry
Different classes of compounds
Following groups exert any one of the effects on electrophilic aromatic substitution
Identify whether all three are:
GPAT - 2023
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
Which among the following Cephalosporins has an unusual 5-thio-1,2,3,4-tetrazole substituent attached to core heterocyclic nucleus through a methylene bridge?
GPAT - 2023
GPAT
Organic Chemistry
Bridged rings
_____ is an example of aromatic nucleophilic substitution reaction.
GPAT - 2023
GPAT
Organic Chemistry
Aromaticity & chemistry of aromatic compounds
A reagent may attach itself to a conjugated diene to the carbons at the two ends of the conjugated system. Identify the reaction involved from the following:
GPAT - 2023
GPAT
Organic Chemistry
Bridged rings
Isoquinoline on treatment with oleum at 90°C yields majorly:
GPAT - 2023
GPAT
Organic Chemistry
Heterocyclic Chemistry
Establishing a complete structure of is more complex problem than others.
GPAT - 2023
GPAT
Organic Chemistry
Carbohydrates
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