List of top Chemistry Questions on Organic Chemistry

Arrange the following amines in the decreasing order of their basic strength : Aniline (I), Benzylamine (II), p-toluidine (III)

Correct order of acidic strength:

One mole of an alkene on ozonolysis gives a mixture of one mole pentan-3-one and one mole methanal. The alkene is (2024)

CH₃CH₂Br → (aq. KOH) → A → (PCl₅) → B
Final product B:

Which of the following statement is correct about Hoffmann’s bromamide degradation reaction?
(a) Alkyl amide do not react.
(b) Secondary amide do not form secondary amide.
(c) Ratio of NaOH and Br₂ is 4 : 2.
(d) Na₂CO₃, NaBr and H₂O also formed along with amine.

Product is:

Find total number of aromatic compounds from the given organic molecules.

Which of the following statement(s) are incorrect?

Statement-1: During fractional distillation, higher boiling point will condense first.
Statement-2: In fractionating column, one which has higher boiling point value will be more in concentration above the fractionating column.

Which of the following compounds give a positive neutral FeCl\(_3\) test?

How many dibromo products are possible for ‘B’ (including stereoisomer)?

Statement 1:
Boiling point order is in decreasing order due to decreasing Vanderwaal's forces.

Statement 2:
P-dichlorobenzene has more melting point value due to its symmetric structure than O-dichlorobenzene while it has less boiling point than O-dichlorobenzene.

Benzene reacts with CO/HCl/AlCl₃ and give 'P'.
Benzene reacts with CH₃-C-Cl / AlCl₃ to give 'Q'.
P and Q react with each other in presence of NaOH / H₂O give product Z. Find number of π e⁻ in product Z.

Bromine trifluoride auto ionizes into BrF\(_2^+\) and BrF\(_4^-\). The geometry of these ions respectively are:

Consider the following sequence of reactions.

The percentage of nitrogen in the yellow product (X) formed is ________ %. (Nearest Integer)
(Given Molar mass in $\text{g mol}^{-1}$ H:1, C:12, N:14)

Consider the following data.

$$\begin{array}{|c|c|} \hline \text{Electrolyte} & \Lambda_m^\circ (\text{S cm}^2 \text{ mol}^{-1}) \\ \hline \text{BaCl}_2 & x_1 \\ \hline \text{H}_2\text{SO}_4 & x_2 \\ \hline \text{HCl} & x_3 \\ \hline \end{array}$$

$\text{BaSO}_4$ is sparingly soluble in water. If the conductivity of the saturated $\text{BaSO}_4$ solution is $x$ S cm$^{-1}$ then the solubility product of $\text{BaSO}_4$ can be given as
(Here $\Lambda_m = \Lambda_m^\circ$)

One mole each of He and $A(g)$ are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium.
$$A(g) \rightleftharpoons B(g)$$
$K_c$ for this reaction at 400 K is 4.0. The partial pressures (in atm) of He and $B(g)$ are respectively (at equilibrium)
(Assume He, $A(g)$ and $B(g)$ behave as ideal gases)
(Given : $R = 0.082 \text{ L atm K}^{-1} \text{ mol}^{-1}$)

Given below are two statements: Statement-I: Methane can be prepared by decarboxylation of sodium acetate, by Kolbe’s electrolysis, and by \( \text{CH}_3\text{MgBr} \).
Statement-II: Methane can’t be prepared by unsaturated hydrocarbon and by Wurtz reaction. Choose the correct option:

Find the percentage of nitrogen in the final product.

Statement-I: 3-Phenylprop-1-ene will react with HBr and give alkyl halide as the major product having 1 chiral carbon atom. Statement-II: Aryl chloride and Aryl cyanide both can be formed by Gattermann and Sandmeyer reactions.

Given below are two statements: Statement-I: 2,4-Diethylcyclohexanone and 2-methyl-6-propylcyclohexanone are metameres.
Statement-II: 2,2,6,6-Tetraethylcyclohexanone will show tautomerism. Choose the correct option:

4.7 g of phenol \( \xrightarrow{Zn,\Delta} X \)
If the reaction goes to 60% yield of X, find the number of moles of ‘X’ formed.

‘X’ may be.

Match with the tab test of amino acids.

Find the correct order of increasing boiling point in the following given molecules:

(A) n-\( C_4H_9OH \) \hspace{1cm} (B) n-\( C_4H_9NH_2 \)
(C) n-\( C_4H_{10} \) \hspace{1cm} (D) \( C_2H_5NH C_2H_5 \)