List of top Chemistry Questions on Organic Chemistry

Provide chemical equations for reactions such as Aldol Condensation, Cross Aldol Condensation, Wurtz Reaction, Fittig Reaction, and Hoffmann Bromamide Reaction.

Acetylation of salicylic acid produces:

Which of the following reagents converts an aldehyde selectively into a primary alcohol?

Arrange the following set of carbocations in order of decreasing stability.

Choose the correct answer from the options given below:

Consider the following statements with respect to citral: \[\begin{array}{rl} \bullet & \text{(A) Geranial and Neral are geometrical isomers of citral.} \\ \bullet & \text{(B) It forms geranic acid on heating with potassium hydrogen sulfate.} \\ \bullet & \text{(C) It gives 6-methylhept-5-en-2-one on treating with potassium carbonate.} \\ \bullet & \text{(D) On oxidation with silver oxide it yields Laevolic acid.} \\ \end{array}\] Choose the correct answer from the options given below:

The rate of solvolysis for the following tertiary halides in 80% aqueous ethanol at 25°C follows the order:

IUPAC name of CH$_3$-CH-CH$_3$ is

Reaction RCOOAg $\xrightarrow{Br_{2}/CCl_{4}}$ RBr is called:

Write chemical equations for the following:
(i) Kolbe reaction
(ii) Reimer-Tiemann reaction
(iii) Oxidation of Phenol
(iv) Williamson synthesis
(v) Industrial preparation of Methanol

Write a short note on Acetylation.

69.77% Carbon, 11.63% Hydrogen and the rest Oxygen is present in an organic compound. The molecular mass of the compound is 86. The compound does not reduce Tollen’s reagent but gives an addition compound with sodium hydrogen sulphite and gives positive iodoform test. On strong oxidation it gives ethanoic acid and propanoic acid. Write the structure of possible compound.

R–NH$_2$ + CHCl$_3$ + 3KOH (alc.) $\longrightarrow$ RNC + 3KCl + 3H$_2$O. The above reaction is:

Write short notes on: (i) Williamson’s ether synthesis
(ii) Fermentation
(iii) To obtain methyl alcohol from pyroligneous acid

What happens when (Write chemical equations only): (i) \textit{n}-Butyl chloride reacts with alcoholic KOH?
(ii) Bromobenzene reacts with magnesium in the presence of dry ether?
(iii) Ethyl chloride reacts with aqueous KOH?
(iv) Methyl bromide reacts with sodium in the presence of dry ether?
(v) Ethyl bromide reacts with KCN (alc.)?

Prove the presence of five –OH groups and a –CHO group in glucose molecule, giving chemical equations. How is silver mirror formed from glucose?

Write chemical equation and mechanism of acid catalysed hydration of Alkene.

Write notes on the following:
(I) Wurtz–Fittig reaction
(II) Sandmeyer reaction

Formalin is an aqueous solution of:

The reagent used to prepare amine from amide is:

Compound $X$ gives alcohol $P$ as the major product for the reaction: \;i) CH$_3$MgBr ii) H$_3$O$^+$. Suitable option(s) for $X$ is/are. ($P$ is the benzylic tertiary alcohol bearing two CH$_3$ groups)

Compounds P and Q undergo E2 elimination with reaction rate constants of $k_1$ and $k_2$, respectively, as shown below. Which is/are the CORRECT option(s)?