NEET UG Chemistry — Organic Chemistry previous year questions with solutions.
In the following reaction, 
Among the following compounds the one that is most reactive towards electrophilic nitration is
Consider the following reaction  The product ' $A$ ' is
Which nomenclature is not according to IUPAC system?
Which of the following compounds will give a yellow precipitate with iodine and alkali?
Deficiency of vitamin $B_1$ causes the disease
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
Which of the following acids does not exhibit optical isomerism?
Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is
An organic compound $\left(\mathrm{C}_3 \mathrm{H}_9 \mathrm{~N}\right)(A)$, when treated with nitrous acid, gave an alcohol and $\mathrm{N}_2$ gas was evolved. $(A)$ on warming with $\mathrm{CHCl}_3$ and caustic potash gave (C) which on reduction gave iso-propylmethylamine. Predict the structure of $(A)$.
Which one of the following statements is not true regarding $(+)$ lactose?
The correct IUPAC name of the compound  is
In Duma's method of estimation of nitrogen $0.35 \mathrm{~g}$ of an organic compound gave $55 \mathrm{~mL}$ of nitrogen collected at $300 \mathrm{~K}$ temperature and $715 \mathrm{~mm}$ pressure. The percentage composition of nitrogen in the compound would be (Aqueous tension at $300 \mathrm{~K}=15 \mathrm{~mm}$ )
The IUPAC name of the following compound  is
The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds 
An organic compound ' $A$ ' on treatment with $\mathrm{NH}_3$ gives ' $B$ ' which on heating gives ' $C$ ', ' $C$ ' when treated with $\mathrm{Br}_2$ in the presence of $\mathrm{KOH}$ produces ethylamine. Compound ' $A$ ' is
Of the following which one is classified as polyester polymer?
Which of the statements about 'Denaturation' given below are correct? Statements (A) Denaturation of proteins causes loss of secondary and tertiary structures of the protein. (B) Denaturation leads to the conversion of double strand of DNA into single strand. (C) Denaturation affects primary structure which gets destroyed.
Which of the following compounds undergoes nucleophilic substitution reaction most easily?
Match the compounds given in list I with list II and select the suitable option using the code given belows.  
Which of the following compound is most basic?
The Lassaigne's extract is boiled with conc $\mathrm{HNO}_3$ while testing for halogens. By doing so it
Consider the reactions (i) $\left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{CH}_2 \mathrm{Br} \stackrel{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}}{\longrightarrow}\left(\mathrm{CH}_3\right)_2 \mathrm{CH} -\mathrm{CH}_2 \mathrm{OC}_2 \mathrm{H}_5+\mathrm{HBr}$ (ii) $\left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{CH}_2 \mathrm{Br} \stackrel{\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}}{\longrightarrow}\left(\mathrm{CH}_3\right)_2 \mathrm{CH} -\mathrm{CH}_2 \mathrm{OC}_2 \mathrm{H}_5+\mathrm{Br}^{-}$ The mechanisms of reactions (i) and (ii) are respectively
Which of the following is not a fat soluble vitamin?