Chemistry Organic Chemistry questions from NEET UG 2012.
Consider the reaction, $$ R \mathrm{CHO}+\mathrm{NH}_2 \mathrm{NH}_2 \longrightarrow \mathrm{RCH}=\mathrm{N}-\mathrm{NH}_2 $$ What sort of reaction is it?
The correct order of decreasing acid strength of trichloroacetic acid $(A)$, trifluoroacetic acid $(B)$, acetic acid $(C)$ and formic acid $(D)$ is
$\mathrm{CH}_3 \mathrm{CHO}$ and $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{CHO}$ can be distinguished chemically by
Among the following compounds the one that is most reactive towards electrophilic nitration is
Predict the products in the given reaction, 
In the following reaction, 
Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is
Which nomenclature is not according to IUPAC system?
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 $(A)$.
Consider the following reaction  The product ' $A$ ' is
Which of the following compounds will give a yellow precipitate with iodine and alkali?
Which one of the following sets of monosaccharides forms sucrose?
Deficiency of vitamin $B_1$ causes the disease
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
In the following sequence of reactions, $\mathrm{CH}_3-\mathrm{Br} \stackrel{\mathrm{KCN}}{\longrightarrow} A \stackrel{\mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow} B \xrightarrow[\mathrm{LiAlH}_4]{\text { ether }} C$ the end product $(C)$ is
Which of the following acids does not exhibit optical isomerism?