List of top Chemistry Questions on Organic Chemistry asked in UP Board XII

Write the IUPAC nomenclature of the following organic compounds:
(A) $CH_3 - CH_2 - \overset{\text{O}}{\overset{||}{\text{C}}} - CH_2 - \underset{\text{CH}_3}{\underset{|}{\text{CH}}} - CH_3$
(B) $Ph - CH = CH - CHO$

IUPAC name of CH\(_3\)-CH-CH\(_3\) is

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

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: