JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
In Williamson synthesis of mixed ether having a primary and a tertiary alkyl group if tertiary halide is used, then :
Among the following vitamins the one whose deficiency causes rickets (bone deficiency) is :
Which of the following reagent(s) used for the conversion? 
Which of the following compounds is not expected to show Lassaignes' test for nitrogen ?
The major product in the following reaction 
Given  In the above compounds correct order of reactivity in electrophilic substitution reactions will be:
The Wurtz-Fittig reaction involves condensation of:
Cannizaro's reaction is not given by :
Which of the following is the product of aldol condensation?
Amongst the following alcohols which would react fastest with conc. $\mathrm{HCl}$ and $\mathrm{ZnCl}_2$ ?
What is the structure of the major product when phenol is treated with bromine water?
An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:
Compound (A), ${C}_{8}{H}_{9}\mathrm{Cl}$, gives a white precipitate when warmed with alcoholic ${\mathrm{AgNO}}_{3}$$_{.}$ Oxidation of (A) gives an acid (B), ${C}_{8}{H}_{6}{O}_{4}$. (B) easily forms anhydride on heating. Identify the compound (A).
Which of the following structures represents thymine ?
A major component of Borsch reagent is obtained by reacting hydrazine hydrate with which of the following ?
Which one of the following is most stable ?
Monocarboxylic acids are functional isomers of:
Aryl fluoride may be prepared from arene diazonium chloride using :
 $\mathrm{X} \text { is: }$
In nucleophilic substitution reaction, order of halogens as incoming (attacking) nucleophile is: $\mathrm{I}^{-}>\mathrm{Br}^{-}>\mathrm{Cl}^{-}$ The order of halogens as departing nucleophile should be :
Which of the following would not give 2-phenylbutane as the major product in a Friedel-Crafts alkylation reaction ?
Arrange in the correct order of stability (decreasing order) for the following molecules: (I)  (II) (III) (IV)
Carbylamine forms from aliphatic or aromatic primary amine via which of the following intermediates?
Synthesis of each molecule of glucose in photosynthesis involves