JEE Basic Principles of Organic Chemistry PYQs, Download PDF

The IUPAC name of the compound shown below is

Which of the following is not an assumption of the kinetic theory of gases?

Given below are two statements:

Statement I: $$o$$-Toluidine (2-methylaniline) is a weaker base than both $$p$$-Toluidine and unsubstituted aniline.

Statement II: The basicity of $$o$$-Toluidine is exceptionally low because the $$-NH_2$$ group is forced out of the plane of the benzene ring by the adjacent $$-CH_3$$ group, an effect known as Steric Inhibition of Resonance (SIR).

In the light of the above statements, choose the most appropriate answer from the options given below:

The initial volume of a gas cylinder is 750.0 mL. If the pressure of gas inside the cylinder changes from 840.0 mmHg to 360.0 mmHg, the final volume the gas will be:

Which one of the following acids does not exhibit optical isomerism?

The order of stability of the following carbocations:

A sealed flask with a capacity of $$2 \text{ dm}^3$$ contains $$11 \text{ g}$$ of propane gas. The flask is so weak that it will burst if the pressure becomes $$2 \text{ MPa}$$. The minimum temperature at which the flask will burst is ______ °C. [Nearest integer]
(Given: $$R = 8.3 \text{ J K}^{-1} \text{ mol}^{-1}$$. Atomic masses of C and H are $$12u$$ and $$1u$$ respectively.) (Assume that propane behaves as an ideal gas.)

The IUPAC name of the following compound is:

The IUPAC name of the following compound is:

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

Given below are four compounds :
(a) n-propyl choride
(b) iso-propyl chloride
(c) sec-butyl chloride
(d) neo-pentyl chloride
Percentage of carbon in the one which exhibits optical isomerism is:

Given below are two statements: Statement I: IUPAC name of $$HO - CH_2 - (CH_2)_3 - CH_2 - COCH_3$$ is 7-hydroxyheptan-2-one. Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for the above compound. In the light of the above statements, Choose the most appropriate answer from the options given below:

An LPG cylinder contains gas at a pressure of 300 kPa at 27°C. The cylinder can withstand the pressure of $$1.2 \times 10^6$$ Pa. The room in which the cylinder is kept catches fire. The minimum temperature at which the bursting of cylinder will take place is _________ °C. (Nearest integer)

When does a gas deviate the most from its ideal behavior?

The major product of which of the following reaction is not obtained by rearrangement reaction?

At temperature T, the average kinetic energy of any particle is $$\frac{3}{2}kT$$. The de Broglie wavelength follows the order:

If Z is the compressibility factor, then Van der Waal's equation at low pressure can be written as:

Initially, the root-mean-square (RMS) velocity of $$N_2$$ molecules at certain temperature is u. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new RMS velocity will be:

Match List I with List II :

Choose the correct answer from the options given below :

Given below are two statements:
Statement I: There are several conformers for n-butane. Out of those conformers,

is the least stable and most stable conformer is

Statement II: As the dihedral angle increases, torsional strain decreases from (X) to (Y).
In the light of the above statements, choose the correct answer from the options given below

The correct IUPAC name of the following compound is:

Which amongst the following is the strongest acid?

The correct stability order of carbocations is

Increasing order of stability of the resonance structure is:

Given below are two statements:
Statement I: The dipole moment of $$\overset{4}{\mathrm{CH_3}} - \overset{3}{\mathrm{CH}} = \overset{2}{\mathrm{CH}} - \overset{1}{\mathrm{CH}}=O$$ is greater than $$\overset{4}{\mathrm{CH_3}} - \overset{3}{\mathrm{CH_2}} - \overset{2}{\mathrm{CH_2}} - \overset{1}{\mathrm{CH}}=O$$.
Statement II: $$C_1-C_2$$ bond length of $$\underset{4}{\mathrm{CH_3}} - \underset{3}{\mathrm{CH}} = \underset{2}{\mathrm{CH}} - \underset{1}{\mathrm{CH}}=O$$ is greater than $$C_1-C_2$$ bond length of $$\underset{4}{\mathrm{CH_3}} - \underset{3}{\mathrm{CH_2}} - \underset{2}{\mathrm{CH_2}} - \underset{1}{\mathrm{CH}}=O$$.
In the light of the above statements, choose the correct answer from the options given below

The difference in energy between the actual structure and the lowest energy resonance structure for the given compound is:

Match List I with List II:

Choose the correct answer from the options given below:

The product (C) in the following sequence of reactions has ______ $$\pi$$ bonds.

The correct nomenclature for the following compound is

The molarity of a solution obtained by mixing 750 mL of 0.5(M) HCl with 250 mL of 2(M) HCl will be