Chemistry Organic Chemistry questions from JEE Main 2018.
Among the following, the incorrect statement is
Glucose on prolonged heating with $\mathrm{HI}$ gives
On the treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is: 
Phenol on treatment with $C{O}_{2}$ in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with ${(C{H}_{3}CO)}_{2}$O in the presence of catalytic amount of ${H}_{2}S{O}_{4}$ produces:
Phenol reacts with methyl chloroformate in the presence of $\mathrm{NaOH}$ to form product $A.A$reacts with ${\mathrm{Br}}_{2}$ to form product $B.A\mathrm{and}B$ are respectively
Products A and B formed in the following reactions are respectively: 
The correct match between items of List-I and List-II is : 
The correct match between items of List-I and List-II is <table class="pyq-table"><tbody><tr><td></td><td>List - I</td><td></td><td>List - II</td></tr><tr><td>(A)</td><td>Coloured impurity</td><td>(P)</td><td>Steam distillation</td></tr><tr><td>(B)</td><td>Mixture of o – nitrophenol and p –nitrophenol</td><td>(Q)</td><td>Fractional distillation</td></tr><tr><td>(C)</td><td>Crude Naphtha</td><td>(R)</td><td>Charcoal treatment</td></tr><tr><td>(D)</td><td>Mixture of glycerol and sugars</td><td>(S)</td><td>Distillation under reduced pressure</td></tr></tbody></table>
The dipeptide, Gln-Gly, on treatment with $\mathrm{CH}_3 \mathrm{COCl}$ followed by aqueous work up gives.
The increasing order of basicity of the following compounds is : 
The increasing order of diazotisation of the following compounds is: (a)  (b) (c) (d)
The increasing order of nitration in the acidic medium of the following compounds is: 
The increasing order of nitration of the following compounds is : 
The increasing order of the acidity of the following carboxylic acids is: 
The IUPAC name of the following compound is : 
The IUPAC name of the following compound is 
The main reduction product of the following compound with $\mathrm{NaBH}_4$ in methanol is : 
The main reduction product of the following compound with ${\mathrm{NaBH}}_{4}$ in methanol is: 
The major product B formed in the following reaction sequence is: 
The major product formed in the following reaction is: 
The major product formed in the following reaction is: 
The major product formed in the following reaction is: 
The major product of the following reaction is: 
The major product of the following reaction is: 
The major product of the following reaction is: 
The major product of the following reaction is: 
The major product of the following reaction is 
The major product of the following reaction is: 
The predominant form of histamine present in human blood is $({\mathrm{pK}}_{a},\mathrm{Histidine}=60)$
The reagent(s) required for the following conversion are: 
The reagent(s) required for the following conversion are: 
The total number of optically active compounds formed in the following reaction is: 
The trans-alkenes are formed by the reduction of alkynes with
Two compounds I and II are eluted by column chromato-graphy(adsorption of I $>$ II). Which one of the following is a correct statement?
When 2-butyne is treated with $\mathrm{H}_2$ /Lindlar's catalyst, compound $\mathrm{X}$ is produced as the major product and when treated with $\mathrm{Na}$ /liq. $\mathrm{NH}_3$ it produces $\mathrm{Y}$ as the major product. Which of the following statements is correct?
Which of the following compounds will be suitable for Kjeldahl's method for nitrogen estimation?
Which of the following compounds will most readily be dehydrated to give alkene under acidic condition?
Which of the following is the correct structure of adenosine?
Which of the following is the correct structure of adenosine ?
Which of the following will most readily give the dehydrohalogenation product?
Which of the following will most readily give the dehydrohalogenation product?
Which of the following will not exist in Zwitterionic form at $\mathrm{pH}=7$?
Which of the following will not exist in zwitter ionic form at $\mathrm{pH}=7$ ?