General Organic Chemistry — JEE Main PYQs

Match List I with List II.
| C. | Ethanamide and Hydroxyethanimine | III. | Functi …

The isomeric deuterated bromide with molecular formula ${\mathrm{C}}_4{\mathrm{H}}_8\mathrm{DBr}$ having two chiral carbon atoms is

Testosterone, which is a steroidal hormone, has the following structure.

The total number of asymmetric carbon atom/s in testosterone is ______

The most stable carbocation for the following is:

The correct order of melting point of dichlorobenzenes is

Correct structure of $\gamma$-methylcyclohexane carbaldehyde is :

Given below are two statements.

Statement I : The compound A is optically active.

Statement II : B is mirror image of above compound A.
In the light of the above statement, choose the most appropriate answer from the options given below.

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : [6] Annulene. [8] Annulene and cis -[10] Annulene, are respectively aromatic, not-aromatic and aromatic.

Reason R: Planarity is one of the requirements of aromati …

Optical activity of an enantiomeric mixture is $+12.6^{\circ }$ and the specific rotation of ( + ) isomer is $+30^{\circ }$. The optical purity is ____ %

The number of ${\mathrm{sp}}^3$ hybridised carbons in an acyclic neutral compound with molecular formula ${\mathrm{C}}_4{\mathrm{H}}_5\mathrm{N}$ is:

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is :

Which of the following compounds is not aromatic?

The correct IUPAC name of the following compound is :

Which of the following is most stable?

Decarboxylation of all six possible forms of diaminobenzoic acids ${\mathrm{C}}_6{\mathrm{H}}_3{\left({\mathrm{NH}}_2\right)}_2\mathrm{COOH}$ yields three products $\mathrm{A},\mathrm{B}$ and C. Three acids give a product 'A', two acids gives a product 'B' and one acid give a …

Which of the following structures are aromatic in nature?

Which of the following carbocations is most stable :

The number of chiral alcohol(s) with molecular formula ${\mathrm{C}}_4{\mathrm{H}}_{10}\mathrm{O}$ is ____.

The correct order of nucleophilicity is

Observe structures of the following compounds

The total number of structures/compounds which possess asymmetric carbon atoms is ____.

Which will have the highest enol content?

Total number of possible stereoisomers of dimethyl cyclopentane is ____

Which of the following is an example of conjugated diketone?

Number of electrophilic centre in the given compound is ______

Arrange the following carbocations in decreasing order of stability.

In the following structures, which one is having staggered conformation with maximum dihedral angle?

Which one of the following compounds is not aromatic?

The number of stereoisomers possible for 1,2-dimethyl cyclopropane is

Among the given species the Resonance stabilized carbocations are:

Which one of the following compounds is non-aromatic?

Which one of the following pairs of isomers is an example of metamerism?

Which one of the following compounds does not exhibit resonance?

Which one of the following molecules does not show stereo isomerism?

The number of acyclic structural isomers (including geometrical isomers) for pentene is ______.

Arrange the following conformational isomers of n-butane in order of their increasing potential energy :

I (see structure)
II (see structure)
III (see structure)
IV (see structure)

Choose the correct name for compound given below :

Staggered and eclipsed conformers of ethane are:

The correct order of stability of given carbocations is:

Which of the following is an aromatic compound ?

Which one among the following resonating structure is not correct?

Given below are two statements:
Statement I: Hyper conjugation is permanent effect.
Statement II : Hyper conjugation in ethyl cation $({\mathrm{CH}}_3-\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2)$ involves the overlapping of ${\mathrm{Csp}}^2-{\mathrm{H}}_{1\mathrm{s}}$ bond with emp …

The dihedral angle in staggered form the Newman projection of $1,1,1,-$ Trichloro ethane is
____ degree. (Round off to the Nearest Integer).

Which one of the following compounds is aromatic in nature?

Assertion A : Enol form of acetone $[\mathrm{CH}{}_3\mathrm{COCH}{}_3]$ exists in $<0.1\%$ quantity. However, the enol form of acetyl acetone $[\mathrm{CH}{}_3\mathrm{COCH}{}_2\mathrm{OCCH}{}_3]$ exists in approximately $15\%$ quantity.
Reason R : Enol form of acetylacetone is stabilized by intramolecular hydrogen bonding, which …

Choose the correct statement regarding the formation of carbocations A and B given.

The correct pair(s) of the ambident nucleophiles is (are):
(A) $\mathrm{AgCN}/\mathrm{KCN}$
(B) $\mathrm{RCOOAg}/\mathrm{RCOOK}$
(C) ${\mathrm{AgNO}}_2/{\mathrm{KNO}}_2$
(D) $\mathrm{AgI}/\mathrm{KI}$

Compound with molecular formula ${\mathrm{C}}_3{\mathrm{H}}_6\mathrm{O}$ can show:

The number of chiral carbons in chloramphenicol is

The correct order of stability for the following alkoxides is

The number of chiral centres in penicillin is ____