Chemistry Organic Chemistry questions from NEET UG 2015.
2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?
A single compound of the structure  is obtainable from ozonolysis of which of the following cyclic compounds?
An organic compound 'X' having molecular formula ${C}_{5}{H}_{10}O$ yields phenyl hydrazone and gives negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. 'X' could be:
Consider the following compounds  Hyperconjugation occurs in:
Given,  Which of the given compounds can exhibit tautomerism?
Given,  The enthalpy of hydrogenation of these compounds will be in the order as:
In an ${S}_{N}1$ reaction on chiral centres, there is:
In Duma's method for estimation of nitrogen, 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is:
In the reaction with $\mathrm{HCl}$, an alkene reacts following the Markovnikov's rule to give the product $1-$chloro$-1-$methylcyclohexane. The possible reaction of the alkene is
In which of the following compounds, the $C-Cl$ bond ionization shall give most stable carbonium ion?
Method by which Aniline cannot be prepared is:
Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
The electrolytic reduction of nitrobenzene in strongly acidic medium produces:
The following reaction  Is known by the name:
The functional group which is formed when Phenol is made to react with Chloroform in the presence of dilute Sodium hydroxide
The number of structural isomers possible from the molecular formula ${C}_{3}{H}_{9}N$ is:
The oxidation of benzene by ${V}_{2}{O}_{5}$ in the presence of air produces:
The reaction  is called:
The reaction of ${C}_{6}{H}_{5}CH=CHC{H}_{3}$ with HBr produces:
Treatment of cyclopentanone  with methyl lithium gives which of the following species?
Two possible stereo-structures of $C{H}_{3}CHOHCOOH$, which are optically active, are called:
Which of the following is not the product of dehydration of  ?
Which of the following is the most correct electron displacement for a nucleophile reaction to take place?
Which of the following reaction(s) can be used for the preparation of alkyl halides? I. $C{H}_{3}C{H}_{2}OH+HCl\overset{Anhyd. ZnC{l}_{2}}{\rightarrow }$ II. $C{H}_{3}C{H}_{2}OH+HCl\longrightarrow$ III. ${(C{H}_{3})}_{3}COH+HCl\longrightarrow$ IV. ${(C{H}_{3})}_{2}CHOH+HCl\overset{Anhyd. ZnC{l}_{2}}{\rightarrow }$
Which of the following statements is not correct for a nucleophile?
Which one of the following esters gets hydrolyzed most easily under alkaline conditions?